runtime/vm/isolate_reload_test.cc

// Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

#include <array>

#include "include/dart_api.h"
#include "include/dart_tools_api.h"
#include "platform/assert.h"
#include "vm/debugger_api_impl_test.h"
#include "vm/globals.h"
#include "vm/isolate.h"
#include "vm/kernel_loader.h"
#include "vm/lockers.h"
#include "vm/thread_barrier.h"
#include "vm/thread_pool.h"
#include "vm/unit_test.h"

namespace dart {

#if !defined(PRODUCT) && !defined(DART_PRECOMPILED_RUNTIME)

int64_t SimpleInvoke(Dart_Handle lib, const char* method) {
  Dart_Handle result = Dart_Invoke(lib, NewString(method), 0, nullptr);
  EXPECT_VALID(result);
  EXPECT(Dart_IsInteger(result));
  int64_t integer_result = 0;
  result = Dart_IntegerToInt64(result, &integer_result);
  EXPECT_VALID(result);
  return integer_result;
}

const char* SimpleInvokeStr(Dart_Handle lib, const char* method) {
  Dart_Handle result = Dart_Invoke(lib, NewString(method), 0, nullptr);
  const char* result_str = nullptr;
  EXPECT(Dart_IsString(result));
  EXPECT_VALID(Dart_StringToCString(result, &result_str));
  return result_str;
}

Dart_Handle SimpleInvokeError(Dart_Handle lib, const char* method) {
  Dart_Handle result = Dart_Invoke(lib, NewString(method), 0, nullptr);
  EXPECT(Dart_IsError(result));
  return result;
}

TEST_CASE(IsolateReload_FunctionReplacement) {
  const char* kScript =
      "main() {\n"
      "  return 4;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  EXPECT_EQ(4, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "var _unused;"
      "main() {\n"
      "  return 10;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_EQ(10, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_IncrementalCompile) {
  const char* kScriptChars =
      "main() {\n"
      "  return 42;\n"
      "}\n";
  Dart_Handle lib = TestCase::LoadTestScript(kScriptChars, nullptr);
  EXPECT_VALID(lib);
  Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  int64_t value = 0;
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(42, value);

  const char* kUpdatedScriptChars =
      "main() {\n"
      "  return 24;\n"
      "}\n"
      "";
  lib = TestCase::ReloadTestScript(kUpdatedScriptChars);
  EXPECT_VALID(lib);
  result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(24, value);
}

TEST_CASE(IsolateReload_KernelIncrementalCompile) {
  // clang-format off
  Dart_SourceFile sourcefiles[] = {
    {
      "file:///test-app",
      "main() {\n"
      "  return 42;\n"
      "}\n",
    }};
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScriptWithDFE(
      sizeof(sourcefiles) / sizeof(Dart_SourceFile), sourcefiles,
      nullptr /* resolver */, true /* finalize */, true /* incrementally */);
  Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  int64_t value = 0;
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(42, value);

  // clang-format off
  Dart_SourceFile updated_sourcefiles[] = {
    {
      "file:///test-app",
      "main() {\n"
      "  return 24;\n"
      "}\n"
      ""
    }};
  // clang-format on
  {
    const uint8_t* kernel_buffer = nullptr;
    intptr_t kernel_buffer_size = 0;
    char* error = TestCase::CompileTestScriptWithDFE(
        "file:///test-app",
        sizeof(updated_sourcefiles) / sizeof(Dart_SourceFile),
        updated_sourcefiles, &kernel_buffer, &kernel_buffer_size,
        true /* incrementally */);
    EXPECT(error == nullptr);
    EXPECT_NOTNULL(kernel_buffer);

    lib = TestCase::ReloadTestKernel(kernel_buffer, kernel_buffer_size);
    EXPECT_VALID(lib);
  }
  result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(24, value);
}

TEST_CASE(IsolateReload_KernelIncrementalCompileAppAndLib) {
  // clang-format off
  Dart_SourceFile sourcefiles[] = {
    {
      "file:///test-app.dart",
      "import 'test-lib.dart';\n"
      "main() {\n"
      "  return WhatsTheMeaningOfAllThis();\n"
      "}\n",
    },
    {
      "file:///test-lib.dart",
      "WhatsTheMeaningOfAllThis() {\n"
      "  return 42;\n"
      "}\n",
    }};
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScriptWithDFE(
      sizeof(sourcefiles) / sizeof(Dart_SourceFile), sourcefiles,
      nullptr /* resolver */, true /* finalize */, true /* incrementally */);
  EXPECT_VALID(lib);
  Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  int64_t value = 0;
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(42, value);

  // clang-format off
  Dart_SourceFile updated_sourcefiles[] = {
    {
      "file:///test-lib.dart",
      "WhatsTheMeaningOfAllThis() {\n"
      "  return 24;\n"
      "}\n"
      ""
    }};
  // clang-format on

  {
    const uint8_t* kernel_buffer = nullptr;
    intptr_t kernel_buffer_size = 0;
    char* error = TestCase::CompileTestScriptWithDFE(
        "file:///test-app.dart",
        sizeof(updated_sourcefiles) / sizeof(Dart_SourceFile),
        updated_sourcefiles, &kernel_buffer, &kernel_buffer_size,
        true /* incrementally */);
    EXPECT(error == nullptr);
    EXPECT_NOTNULL(kernel_buffer);

    lib = TestCase::ReloadTestKernel(kernel_buffer, kernel_buffer_size);
    EXPECT_VALID(lib);
  }
  result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(24, value);
}

TEST_CASE(IsolateReload_KernelIncrementalCompileGenerics) {
  // clang-format off
  Dart_SourceFile sourcefiles[] = {
    {
      "file:///test-app.dart",
      "import 'test-lib.dart';\n"
      "class Account {\n"
      "  int balance() => 42;\n"
      "}\n"
      "class MyAccountState extends State<Account> {\n"
      "  MyAccountState(Account a): super(a) {}\n"
      "}\n"
      "main() {\n"
      "  return (new MyAccountState(new Account()))\n"
      "      .howAreTheThings().balance();\n"
      "}\n",
    },
    {
      "file:///test-lib.dart",
      "class State<T> {\n"
      "  T t;"
      "  State(this.t);\n"
      "  T howAreTheThings() => t;\n"
      "}\n",
    }};
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScriptWithDFE(
      sizeof(sourcefiles) / sizeof(Dart_SourceFile), sourcefiles,
      nullptr /* resolver */, true /* finalize */, true /* incrementally */);
  EXPECT_VALID(lib);
  Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  int64_t value = 0;
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(42, value);

  // clang-format off
  Dart_SourceFile updated_sourcefiles[] = {
    {
      "file:///test-app.dart",
      "import 'test-lib.dart';\n"
      "class Account {\n"
      "  int balance() => 24;\n"
      "}\n"
      "class MyAccountState extends State<Account> {\n"
      "  MyAccountState(Account a): super(a) {}\n"
      "}\n"
      "main() {\n"
      "  return (new MyAccountState(new Account()))\n"
      "      .howAreTheThings().balance();\n"
      "}\n",
    }};
  // clang-format on
  {
    const uint8_t* kernel_buffer = nullptr;
    intptr_t kernel_buffer_size = 0;
    char* error = TestCase::CompileTestScriptWithDFE(
        "file:///test-app.dart",
        sizeof(updated_sourcefiles) / sizeof(Dart_SourceFile),
        updated_sourcefiles, &kernel_buffer, &kernel_buffer_size,
        true /* incrementally */);
    EXPECT(error == nullptr);
    EXPECT_NOTNULL(kernel_buffer);

    lib = TestCase::ReloadTestKernel(kernel_buffer, kernel_buffer_size);
    EXPECT_VALID(lib);
  }
  result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(24, value);
}

TEST_CASE(IsolateReload_KernelIncrementalCompileBaseClass) {
  // clang-format off
  const char* kSourceFile1 =
                                "class State<T, U> {\n"
                                "  T? t;\n"
                                "  U? u;\n"
                                "  State(List l) {\n"
                                "    t = l[0] is T ? l[0] : null;\n"
                                "    u = l[1] is U ? l[1] : null;\n"
                                "  }\n"
                                "}\n";
  Dart_SourceFile sourcefiles[3] = {
      {
          "file:///test-app.dart",
          "import 'test-util.dart';\n"
          "main() {\n"
          "  var v = doWork();"
          "  return v == 42 ? 1 : v == null ? -1 : 0;\n"
          "}\n",
      },
      {
          "file:///test-lib.dart",
          kSourceFile1
      },
      {
        "file:///test-util.dart",
        "import 'test-lib.dart';\n"
        "class MyAccountState extends State<int, String> {\n"
        "  MyAccountState(List l): super(l) {}\n"
        "  first() => t;\n"
        "}\n"
        "doWork() => new MyAccountState(<dynamic>[42, 'abc']).first();\n"
      }
  };
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScriptWithDFE(
      sizeof(sourcefiles) / sizeof(Dart_SourceFile), sourcefiles,
      nullptr /* resolver */, true /* finalize */, true /* incrementally */);
  EXPECT_VALID(lib);
  Dart_Handle result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  int64_t value = 0;
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(1, value);

  const char* kUpdatedSourceFile =
      "class State<U, T> {\n"
      "  T? t;\n"
      "  U? u;\n"
      "  State(List l) {\n"
      "    t = l[0] is T ? l[0] : null;\n"
      "    u = l[1] is U ? l[1] : null;\n"
      "  }\n"
      "}\n";
  Dart_SourceFile updated_sourcefiles[1] = {{
      "file:///test-lib.dart",
      kUpdatedSourceFile,
  }};
  {
    const uint8_t* kernel_buffer = nullptr;
    intptr_t kernel_buffer_size = 0;
    char* error = TestCase::CompileTestScriptWithDFE(
        "file:///test-app.dart",
        sizeof(updated_sourcefiles) / sizeof(Dart_SourceFile),
        updated_sourcefiles, &kernel_buffer, &kernel_buffer_size,
        true /* incrementally */);
    EXPECT(error == nullptr);
    EXPECT_NOTNULL(kernel_buffer);

    lib = TestCase::ReloadTestKernel(kernel_buffer, kernel_buffer_size);
    EXPECT_VALID(lib);
  }
  result = Dart_Invoke(lib, NewString("main"), 0, nullptr);
  result = Dart_IntegerToInt64(result, &value);
  EXPECT_VALID(result);
  EXPECT_EQ(-1, value);
}

TEST_CASE(IsolateReload_BadClass) {
  const char* kScript =
      "class Foo {\n"
      "  final a;\n"
      "  Foo(this.a);\n"
      "}\n"
      "main() {\n"
      "  new Foo(5);\n"
      "  return 4;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(4, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "var _unused;"
      "class Foo {\n"
      "  final a kjsdf ksjdf ;\n"
      "  Foo(this.a);\n"
      "}\n"
      "main() {\n"
      "  new Foo(5);\n"
      "  return 10;\n"
      "}\n";

  Dart_Handle result = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(result, "Expected ';' after this");
  EXPECT_EQ(4, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_StaticValuePreserved) {
  const char* kScript =
      "init() => 'old value';\n"
      "var value = init();\n"
      "main() {\n"
      "  return 'init()=${init()},value=${value}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("init()=old value,value=old value",
               SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var _unused;"
      "init() => 'new value';\n"
      "var value = init();\n"
      "main() {\n"
      "  return 'init()=${init()},value=${value}';\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("init()=new value,value=old value",
               SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_SavedClosure) {
  // Create a closure in main which only exists in the original source.
  const char* kScript =
      "magic() {\n"
      "  var x = 'ante';\n"
      "  return x + 'diluvian';\n"
      "}\n"
      "var closure;\n"
      "main() {\n"
      "  closure = () { return magic().toString() + '!'; };\n"
      "  return closure();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("antediluvian!", SimpleInvokeStr(lib, "main"));

  // Remove the original closure from the source code.  The closure is
  // able to be recompiled because its source is preserved in a
  // special patch class.
  const char* kReloadScript =
      "magic() {\n"
      "  return 'postapocalyptic';\n"
      "}\n"
      "var closure;\n"
      "main() {\n"
      "  return closure();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("postapocalyptic!", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_TopLevelFieldAdded) {
  const char* kScript =
      "var value1 = 10;\n"
      "main() {\n"
      "  return 'value1=${value1}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("value1=10", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var value1 = 10;\n"
      "var value2 = 20;\n"
      "main() {\n"
      "  return 'value1=${value1},value2=${value2}';\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("value1=10,value2=20", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_ClassFieldAdded) {
  const char* kScript =
      "class Foo {\n"
      "  var x;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "class Foo {\n"
      "  var x;\n"
      "  var y;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_ClassFieldAdded2) {
  const char* kScript =
      "class Foo {\n"
      "  var x;\n"
      "  var y;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "class Foo {\n"
      "  var x;\n"
      "  var y;\n"
      "  var z;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_ClassFieldRemoved) {
  const char* kScript =
      "class Foo {\n"
      "  var x;\n"
      "  var y;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "class Foo {\n"
      "  var x;\n"
      "}\n"
      "main() {\n"
      "  new Foo();\n"
      "  return 44;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_EQ(44, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_ClassAdded) {
  const char* kScript =
      "main() {\n"
      "  return 'hello';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var _unused;"
      "class A {\n"
      "  toString() => 'hello from A';\n"
      "}\n"
      "main() {\n"
      "  return new A().toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello from A", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_ClassRemoved) {
  const char* kScript =
      "class A {\n"
      "  toString() => 'hello from A';\n"
      "}\n"
      "List<dynamic> list = <dynamic>[];"
      "main() {\n"
      "  list.add(new A());\n"
      "  return list[0].toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello from A", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "List<dynamic> list = <dynamic>[];\n"
      "main() {\n"
      "  return list[0].toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello from A", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_LibraryImportAdded) {
  const char* kScript =
      "main() {\n"
      "  return max(3, 4);\n"
      "}\n";

  const char* kReloadScript =
      "import 'dart:math';\n"
      "main() {\n"
      "  return max(3, 4);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScriptWithErrors(kScript);
  EXPECT_VALID(lib);
  EXPECT_ERROR(SimpleInvokeError(lib, "main"), "max");

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_EQ(4, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_LibraryImportRemoved) {
  const char* kScript =
      "import 'dart:math';\n"
      "main() {\n"
      "  return max(3, 4);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(4, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "main() {\n"
      "  return max(3, 4);\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(SimpleInvokeError(lib, "main"), "max");
}

TEST_CASE(IsolateReload_LibraryDebuggable) {
  const char* kScript =
      "main() {\n"
      "  return 1;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  // The library is by default debuggable.  Make it not debuggable.
  intptr_t lib_id = -1;
  bool debuggable = false;
  EXPECT_VALID(Dart_LibraryId(lib, &lib_id));
  EXPECT_VALID(Dart_GetLibraryDebuggable(lib_id, &debuggable));
  EXPECT_EQ(true, debuggable);
  EXPECT_VALID(Dart_SetLibraryDebuggable(lib_id, false));
  EXPECT_VALID(Dart_GetLibraryDebuggable(lib_id, &debuggable));
  EXPECT_EQ(false, debuggable);

  EXPECT_EQ(1, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "main() {\n"
      "  return 2;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);

  EXPECT_EQ(2, SimpleInvoke(lib, "main"));

  // Library debuggability is preserved.
  intptr_t new_lib_id = -1;
  EXPECT_VALID(Dart_LibraryId(lib, &new_lib_id));
  EXPECT_VALID(Dart_GetLibraryDebuggable(new_lib_id, &debuggable));
  EXPECT_EQ(false, debuggable);
}

TEST_CASE(IsolateReload_ImplicitConstructorChanged) {
  // Note that we are checking that the value 20 gets cleared from the
  // compile-time constants cache.  To make this test work, "20" and
  // "10" need to be at the same token position.
  const char* kScript =
      "class A {\n"
      "  int field = 20;\n"
      "}\n"
      "var savedA = new A();\n"
      "main() {\n"
      "  var newA = new A();\n"
      "  return 'saved:${savedA.field} new:${newA.field}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("saved:20 new:20", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class A {\n"
      "  int field = 10;\n"
      "}\n"
      "var savedA = new A();\n"
      "main() {\n"
      "  var newA = new A();\n"
      "  return 'saved:${savedA.field} new:${newA.field}';\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("saved:20 new:10", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_ConstructorChanged) {
  // clang-format off
  const char* kScript =
                  "class A {\n"
                  "  late int field;\n"
                  "  A() { field = 20; }\n"
                  "}\n"
                  "var savedA = A();\n"
                  "main() {\n"
                  "  var newA = A();\n"
                  "  return 'saved:${savedA.field} new:${newA.field}';\n"
                  "}\n";
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("saved:20 new:20", SimpleInvokeStr(lib, "main"));

  // clang-format off
  const char* kReloadScript =
                  "var _unused;"
                  "class A {\n"
                  "  late int field;\n"
                  "  A() { field = 10; }\n"
                  "}\n"
                  "var savedA = A();\n"
                  "main() {\n"
                  "  var newA = A();\n"
                  "  return 'saved:${savedA.field} new:${newA.field}';\n"
                  "}\n";
  // clang-format on

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("saved:20 new:10", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_SuperClassChanged) {
  const char* kScript =
      "class A {\n"
      "}\n"
      "class B extends A {\n"
      "}\n"
      "var list = [ new A(), new B() ];\n"
      "main() {\n"
      "  return (list.map((x) => '${x is A}/${x is B}')).toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("(true/false, true/true)", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var _unused;"
      "class B{\n"
      "}\n"
      "class A extends B {\n"
      "}\n"
      "var list = [ new A(), new B() ];\n"
      "main() {\n"
      "  return (list.map((x) => '${x is A}/${x is B}')).toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("(true/true, false/true)", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_Generics) {
  // Reload a program with generics without changing the source.  We
  // do this to produce duplication TypeArguments and make sure that
  // the system doesn't die.
  const char* kScript =
      "class A {\n"
      "}\n"
      "class B<T extends A> {\n"
      "}\n"
      "main() {\n"
      "  return new B<A>().toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of 'B<A>'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class A {\n"
      "}\n"
      "class B<T extends A> {\n"
      "}\n"
      "main() {\n"
      "  return new B<A>().toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of 'B<A>'", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_TypeIdentity) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class T { }\n"
      "getType() => T;\n"
      "main() {\n"
      "  var oldType = getType();\n"
      "  reloadTest();\n"
      "  var newType = getType();\n"
      "  return identical(oldType, newType).toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class T extends Stopwatch { }\n"
      "getType() => T;\n"
      "main() {\n"
      "  var oldType = getType();\n"
      "  reloadTest();\n"
      "  var newType = getType();\n"
      "  return identical(oldType, newType).toString();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("true", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_TypeIdentityGeneric) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class T<G> { }\n"
      "getType() => new T<int>().runtimeType;\n"
      "main() {\n"
      "  var oldType = getType();\n"
      "  reloadTest();\n"
      "  var newType = getType();\n"
      "  return identical(oldType, newType).toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class T<G> extends Stopwatch { }\n"
      "getType() => new T<int>().runtimeType;\n"
      "main() {\n"
      "  var oldType = getType();\n"
      "  reloadTest();\n"
      "  var newType = getType();\n"
      "  return identical(oldType, newType).toString();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("true", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_TypeIdentityParameter) {
  const char* kScript =
      "import 'dart:mirrors';\n"
      "import 'file:///test:isolate_reload_helper';\n"
      "class T<G> { }\n"
      "getTypeVar() => reflectType(T).typeVariables[0];\n"
      "main() {\n"
      "  var oldType = getTypeVar();\n"
      "  reloadTest();\n"
      "  var newType = getTypeVar();\n"
      "  return (oldType == newType).toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'dart:mirrors';\n"
      "import 'file:///test:isolate_reload_helper';\n"
      "class T<G> extends Stopwatch { }\n"
      "getTypeVar() => reflectType(T).typeVariables[0];\n"
      "main() {\n"
      "  var oldType = getTypeVar();\n"
      "  reloadTest();\n"
      "  var newType = getTypeVar();\n"
      "  return (oldType == newType).toString();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("true", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_MixinChanged) {
  const char* kScript =
      "mixin Mixin1 {\n"
      "  var field = 'mixin1';\n"
      "  func() => 'mixin1';\n"
      "}\n"
      "class B extends Object with Mixin1 {\n"
      "}\n"
      "var saved = new B();\n"
      "main() {\n"
      "  return 'saved:field=${saved.field},func=${saved.func()}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("saved:field=mixin1,func=mixin1", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "mixin Mixin2 {\n"
      "  var field = 'mixin2';\n"
      "  func() => 'mixin2';\n"
      "}\n"
      "class B extends Object with Mixin2 {\n"
      "}\n"
      "var saved = new B();\n"
      "main() {\n"
      "  var newer = new B();\n"
      "  return 'saved:field=${saved.field},func=${saved.func()} '\n"
      "         'newer:field=${newer.field},func=${newer.func()}';\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);

  // The saved instance of B retains its old field value from mixin1,
  // but it gets the new implementation of func from mixin2.
  EXPECT_STREQ(
      "saved:field=mixin1,func=mixin2 "
      "newer:field=mixin2,func=mixin2",
      SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_ComplexInheritanceChange) {
  const char* kScript =
      "class A {\n"
      "  String name;\n"
      "  A(this.name);\n"
      "}\n"
      "class B extends A {\n"
      "  B(name) : super(name);\n"
      "}\n"
      "class C extends B {\n"
      "  C(name) : super(name);\n"
      "}\n"
      "var list = <dynamic>[ new A('a'), new B('b'), new C('c') ];\n"
      "main() {\n"
      "  return (list.map((x) {\n"
      "    return '${x.name} is A(${x is A})/ B(${x is B})/ C(${x is C})';\n"
      "  })).toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ(
      "(a is A(true)/ B(false)/ C(false),"
      " b is A(true)/ B(true)/ C(false),"
      " c is A(true)/ B(true)/ C(true))",
      SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C {\n"
      "  String name;\n"
      "  C(this.name);\n"
      "}\n"
      "class X extends C {\n"
      "  X(name) : super(name);\n"
      "}\n"
      "class A extends X {\n"
      "  A(name) : super(name);\n"
      "}\n"
      "var list;\n"
      "main() {\n"
      "  list.add(new X('x'));\n"
      "  return (list.map((x) {\n"
      "    return '${x.name} is A(${x is A})/ C(${x is C})/ X(${x is X})';\n"
      "  })).toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ(
      "(a is A(true)/ C(true)/ X(true),"
      " b is A(true)/ C(true)/ X(true),"  // still extends A...
      " c is A(false)/ C(true)/ X(false),"
      " x is A(false)/ C(true)/ X(true))",
      SimpleInvokeStr(lib, "main"));

  // Revive the class B and make sure all allocated instances take
  // their place in the inheritance hierarchy.
  const char* kReloadScript2 =
      "class X {\n"
      "  String name;\n"
      "  X(this.name);\n"
      "}\n"
      "class A extends X{\n"
      "  A(name) : super(name);\n"
      "}\n"
      "class B extends X {\n"
      "  B(name) : super(name);\n"
      "}\n"
      "class C extends A {\n"
      "  C(name) : super(name);\n"
      "}\n"
      "var list;\n"
      "main() {\n"
      "  return (list.map((x) {\n"
      "    return '${x.name} is '\n"
      "           'A(${x is A})/ B(${x is B})/ C(${x is C})/ X(${x is X})';\n"
      "  })).toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript2);
  EXPECT_VALID(lib);
  EXPECT_STREQ(
      "(a is A(true)/ B(false)/ C(false)/ X(true),"
      " b is A(false)/ B(true)/ C(false)/ X(true),"
      " c is A(true)/ B(false)/ C(true)/ X(true),"
      " x is A(false)/ B(false)/ C(false)/ X(true))",
      SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_LiveStack) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "helper() => 7;\n"
      "alpha() { var x = helper(); reloadTest(); return x + helper(); }\n"
      "foo() => alpha();\n"
      "bar() => foo();\n"
      "main() {\n"
      "  return bar();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "helper() => 100;\n"
      "alpha() => 5 + helper();\n"
      "foo() => alpha();\n"
      "bar() => foo();\n"
      "main() {\n"
      "  return bar();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_EQ(107, SimpleInvoke(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_EQ(105, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_LibraryLookup) {
  const char* kImportScript = "importedFunc() => 'a';\n";
  TestCase::AddTestLib("test:lib1", kImportScript);

  const char* kScript =
      "main() {\n"
      "  return 'b';\n"
      "}\n";
  Dart_Handle result;
  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("b", SimpleInvokeStr(lib, "main"));

  // Fail to find 'test:lib1' in the isolate.
  result = Dart_LookupLibrary(NewString("test:lib1"));
  EXPECT(Dart_IsError(result));

  const char* kReloadScript =
      "import 'test:lib1';\n"
      "main() {\n"
      "  return importedFunc();\n"
      "}\n";

  // Reload and add 'test:lib1' to isolate.
  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("a", SimpleInvokeStr(lib, "main"));

  // Find 'test:lib1' in the isolate.
  result = Dart_LookupLibrary(NewString("test:lib1"));
  EXPECT(Dart_IsLibrary(result));

  // Reload and remove 'test:lib1' from isolate.
  lib = TestCase::ReloadTestScript(kScript);
  EXPECT_VALID(lib);

  // Fail to find 'test:lib1' in the isolate.
  result = Dart_LookupLibrary(NewString("test:lib1"));
  EXPECT(Dart_IsError(result));
}

TEST_CASE(IsolateReload_LibraryHide) {
  const char* kImportScript = "importedFunc() => 'a';\n";
  TestCase::AddTestLib("test:lib1", kImportScript);

  // Import 'test:lib1' with importedFunc hidden. Will result in an
  // error.
  const char* kScript =
      "import 'test:lib1' hide importedFunc;\n"
      "main() {\n"
      "  return importedFunc();\n"
      "}\n";

  // Dart_Handle result;

  Dart_Handle lib = TestCase::LoadTestScriptWithErrors(kScript);
  EXPECT_VALID(lib);
  EXPECT_ERROR(SimpleInvokeError(lib, "main"), "importedFunc");

  // Import 'test:lib1'.
  const char* kReloadScript =
      "import 'test:lib1';\n"
      "main() {\n"
      "  return importedFunc();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("a", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_LibraryShow) {
  const char* kImportScript =
      "importedFunc() => 'a';\n"
      "importedIntFunc() => 4;\n";
  TestCase::AddTestLib("test:lib1", kImportScript);

  // Import 'test:lib1' with importedIntFunc visible. Will result in
  // an error when 'main' is invoked.
  const char* kScript =
      "import 'test:lib1' show importedIntFunc;\n"
      "main() {\n"
      "  return importedFunc();\n"
      "}\n"
      "mainInt() {\n"
      "  return importedIntFunc();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScriptWithErrors(kScript);
  EXPECT_VALID(lib);

  // Works.
  EXPECT_EQ(4, SimpleInvoke(lib, "mainInt"));
  // Results in an error.
  EXPECT_ERROR(SimpleInvokeError(lib, "main"), "importedFunc");

  // Import 'test:lib1' with importedFunc visible. Will result in
  // an error when 'mainInt' is invoked.
  const char* kReloadScript =
      "import 'test:lib1' show importedFunc;\n"
      "main() {\n"
      "  return importedFunc();\n"
      "}\n"
      "mainInt() {\n"
      "  return importedIntFunc();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(lib, "importedIntFunc");
}

// Verifies that we clear the ICs for the functions live on the stack in a way
// that is compatible with the fast path smi stubs.
TEST_CASE(IsolateReload_SmiFastPathStubs) {
  const char* kImportScript = "importedIntFunc() => 4;\n";
  TestCase::AddTestLib("test:lib1", kImportScript);

  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "import 'test:lib1' show importedIntFunc;\n"
      "main() {\n"
      "  var x = importedIntFunc();\n"
      "  var y = importedIntFunc();\n"
      "  reloadTest();\n"
      "  return x + y;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  // Identity reload.
  EXPECT_VALID(TestCase::SetReloadTestScript(kScript));

  EXPECT_EQ(8, SimpleInvoke(lib, "main"));
}

// Verifies that we assign the correct patch classes for imported
// mixins when we reload.
TEST_CASE(IsolateReload_ImportedMixinFunction) {
  const char* kImportScript =
      "mixin ImportedMixin {\n"
      "  mixinFunc() => 'mixin';\n"
      "}\n";
  TestCase::AddTestLib("test:lib1", kImportScript);

  const char* kScript =
      "import 'test:lib1' show ImportedMixin;\n"
      "class A extends Object with ImportedMixin {\n"
      "}"
      "var func = new A().mixinFunc;\n"
      "main() {\n"
      "  return func();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  EXPECT_STREQ("mixin", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "import 'test:lib1' show ImportedMixin;\n"
      "class A extends Object with ImportedMixin {\n"
      "}"
      "var func;\n"
      "main() {\n"
      "  return func();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("mixin", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_TopLevelParseError) {
  const char* kScript =
      "main() {\n"
      "  return 4;\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_EQ(4, SimpleInvoke(lib, "main"));

  const char* kReloadScript =
      "kjsadkfjaksldfjklsadf;\n"
      "main() {\n"
      "  return 4;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(lib,
               "Variables must be declared using the keywords"
               " 'const', 'final', 'var' or a type name.");
}

TEST_CASE(IsolateReload_PendingUnqualifiedCall_StaticToInstance) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'static';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'instance';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  const char* expected = "instance";
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ(expected, result);

  // Bail out if we've already failed so we don't crash in the tag handler.
  if ((result == nullptr) || (strcmp(expected, result) != 0)) {
    return;
  }

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_STREQ(expected, SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_PendingUnqualifiedCall_InstanceToStatic) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'instance';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'static';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));
  const char* expected = "static";
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_NOTNULL(result);
  // Bail out if we've already failed so we don't crash in StringEquals.
  if (result == nullptr) {
    return;
  }
  EXPECT_STREQ(expected, result);

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_STREQ(expected, SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_PendingConstructorCall_AbstractToConcrete) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "abstract class Foo {}\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    new C().test();\n"
      "    return 'okay';\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class Foo {}\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return new Foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    new C().test();\n"
      "    return 'okay';\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  const char* expected = "okay";
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ(expected, result);

  // Bail out if we've already failed so we don't crash in the tag handler.
  if ((result == nullptr) || (strcmp(expected, result) != 0)) {
    return;
  }

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_STREQ(expected, SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_PendingConstructorCall_ConcreteToAbstract) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class Foo {}\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return new Foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    new C().test();\n"
      "    return 'okay';\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "abstract class Foo {}\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return new Foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    new C().test();\n"
      "    return 'okay';\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));
  EXPECT_ERROR(SimpleInvokeError(lib, "main"), "is abstract");
}

TEST_CASE(IsolateReload_PendingStaticCall_DefinedToNSM) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'static';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return C.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    return new C().test();\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return C.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    return new C().test();\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));
  const char* expected = "exception";
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_NOTNULL(result);

  // Bail out if we've already failed so we don't crash in StringEquals.
  if (result == nullptr) {
    return;
  }
  EXPECT_STREQ(expected, result);

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_STREQ(expected, SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_PendingStaticCall_NSMToDefined) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return C.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    return new C().test();\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'static';\n"
      "  test() {\n"
      "    reloadTest();\n"
      "    return C.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  try {\n"
      "    return new C().test();\n"
      "  } catch (e) {\n"
      "    return 'exception';\n"
      "  }\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  const char* expected = "static";
  const char* result = SimpleInvokeStr(lib, "main");

  // Bail out if we've already failed so we don't crash in the tag handler.
  if (result == nullptr) {
    return;
  }
  EXPECT_STREQ(expected, result);

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
  EXPECT_STREQ(expected, SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_PendingSuperCall) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class S {\n"
      "  foo() => 1;\n"
      "}\n"
      "class C extends S {\n"
      "  foo() => 100;\n"
      "  test() {\n"
      "    var n = super.foo();\n"
      "    reloadTest();\n"
      "    return n + super.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class S {\n"
      "  foo() => 10;\n"
      "}\n"
      "class C extends S {\n"
      "  foo() => 100;\n"
      "  test() {\n"
      "    var n = super.foo();\n"
      "    reloadTest();\n"
      "    return n + super.foo();\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  return new C().test();\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_EQ(11, SimpleInvoke(lib, "main"));
}

TEST_CASE(IsolateReload_TearOff_Instance_Equality) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'old';\n"
      "}\n"
      "main() {\n"
      "  var c = new C();\n"
      "  var f1 = c.foo;\n"
      "  reloadTest();\n"
      "  var f2 = c.foo;\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'new';\n"
      "}\n"
      "main() {\n"
      "  var c = new C();\n"
      "  var f1 = c.foo;\n"
      "  reloadTest();\n"
      "  var f2 = c.foo;\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("new new true false", SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_Parameter_Count_Mismatch) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'old';\n"
      "}\n"
      "main() {\n"
      "  var f1 = C.foo;\n"
      "  reloadTest();\n"
      "  return f1();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo(i) => 'new:$i';\n"
      "}\n"
      "main() {\n"
      "  var f1 = C.foo;\n"
      "  reloadTest();\n"
      "  return f1();\n"
      "}\n";

  TestCase::SetReloadTestScript(kReloadScript);
  Dart_Handle error_handle = SimpleInvokeError(lib, "main");

  const char* error;
  error =
      "/test-lib:8:12: Error: Too few positional"
      " arguments: 1 required, 0 given.\n"
      "  return f1();";
  EXPECT_ERROR(error_handle, error);
}

TEST_CASE(IsolateReload_TearOff_Remove) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo({String bar = 'bar'}) => 'old';\n"
      "}\n"
      "main() {\n"
      "  var f1 = C.foo;\n"
      "  reloadTest();\n"
      "  try {\n"
      "    return f1();\n"
      "  } catch(e) { return '$e'; }\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "}\n"
      "main() {\n"
      "  var f1;\n"
      "  reloadTest();\n"
      "  try {\n"
      "    return f1();\n"
      "  } catch(e) { return '$e'; }\n"
      "}\n";

  TestCase::SetReloadTestScript(kReloadScript);

  EXPECT_SUBSTRING(
      "NoSuchMethodError: No static method 'foo' declared in class 'C'.",
      SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_Class_Identity) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'old';\n"
      "}\n"
      "getFoo() => C.foo;\n"
      "main() {\n"
      "  var f1 = getFoo();\n"
      "  reloadTest();\n"
      "  var f2 = getFoo();\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo() => 'new';\n"
      "}\n"
      "getFoo() => C.foo;\n"
      "main() {\n"
      "  var f1 = getFoo();\n"
      "  reloadTest();\n"
      "  var f2 = getFoo();\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("new new true true", SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_Library_Identity) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "foo() => 'old';\n"
      "getFoo() => foo;\n"
      "main() {\n"
      "  var f1 = getFoo();\n"
      "  reloadTest();\n"
      "  var f2 = getFoo();\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "foo() => 'new';\n"
      "getFoo() => foo;\n"
      "main() {\n"
      "  var f1 = getFoo();\n"
      "  reloadTest();\n"
      "  var f2 = getFoo();\n"
      "  return '${f1()} ${f2()} ${f1 == f2} ${identical(f1, f2)}';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("new new true true", SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_List_Set) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'old';\n"
      "}\n"
      "List list = List<dynamic>.filled(2, null);\n"
      "Set set = Set();\n"
      "main() {\n"
      "  var c = C();\n"
      "  list[0] = c.foo;\n"
      "  list[1] = c.foo;\n"
      "  set.add(c.foo);\n"
      "  set.add(c.foo);\n"
      "  int countBefore = set.length;\n"
      "  reloadTest();\n"
      "  list[1] = c.foo;\n"
      "  set.add(c.foo);\n"
      "  set.add(c.foo);\n"
      "  int countAfter = set.length;\n"
      "  return '${list[0]()} ${list[1]()} ${list[0] == list[1]} '\n"
      "         '${countBefore == 1} ${countAfter == 1} ${(set.first)()} '\n"
      "         '${set.first == c.foo} ${set.first == c.foo} '\n"
      "         '${set.remove(c.foo)}';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo() => 'new';\n"
      "}\n"
      "List list = List<dynamic>.filled(2, null);\n"
      "Set set = Set();\n"
      "main() {\n"
      "  var c = C();\n"
      "  list[0] = c.foo;\n"
      "  list[1] = c.foo;\n"
      "  set.add(c.foo);\n"
      "  set.add(c.foo);\n"
      "  int countBefore = set.length;\n"
      "  reloadTest();\n"
      "  list[1] = c.foo;\n"
      "  set.add(c.foo);\n"
      "  set.add(c.foo);\n"
      "  int countAfter = set.length;\n"
      "  return '${list[0]()} ${list[1]()} ${list[0] == list[1]} '\n"
      "         '${countBefore == 1} ${countAfter == 1} ${(set.first)()} '\n"
      "         '${set.first == c.foo} ${set.first == c.foo} '\n"
      "         '${set.remove(c.foo)}';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ("new new true true true new true true true",
               SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_AddArguments) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo(x) => x;\n"
      "}\n"
      "invoke(f, a) {\n"
      "  try {\n"
      "    return f(a);\n"
      "  } catch (e) {\n"
      "    return e.toString().split('\\n').first;\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  var c = new C();\n"
      "  var f = c.foo;\n"
      "  var r1 = invoke(f, 1);\n"
      "  reloadTest();\n"
      "  var r2 = invoke(f, 1);\n"
      "  return '$r1 $r2';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  foo(x, y, z) => x + y + z;\n"
      "}\n"
      "invoke(f, a) {\n"
      "  try {\n"
      "    return f(a);\n"
      "  } catch (e) {\n"
      "    return e.toString().split('\\n').first;\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  var c = new C();\n"
      "  var f = c.foo;\n"
      "  var r1 = invoke(f, 1);\n"
      "  reloadTest();\n"
      "  var r2 = invoke(f, 1);\n"
      "  return '$r1 $r2';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ(
      "1 NoSuchMethodError: Class 'C' has no instance method "
      "'foo' with matching arguments.",
      SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_TearOff_AddArguments2) {
  const char* kScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo(x) => x;\n"
      "}\n"
      "invoke(f, a) {\n"
      "  try {\n"
      "    return f(a);\n"
      "  } catch (e) {\n"
      "    return e.toString().split('\\n').first;\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  var f = C.foo;\n"
      "  var r1 = invoke(f, 1);\n"
      "  reloadTest();\n"
      "  var r2 = invoke(f, 1);\n"
      "  return '$r1 $r2';\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  const char* kReloadScript =
      "import 'file:///test:isolate_reload_helper';\n"
      "class C {\n"
      "  static foo(x, y, z) => x + y + z;\n"
      "}\n"
      "invoke(f, a) {\n"
      "  try {\n"
      "    return f(a);\n"
      "  } catch (e) {\n"
      "    return e.toString().split('\\n').first;\n"
      "  }\n"
      "}\n"
      "main() {\n"
      "  var f = C.foo;\n"
      "  var r1 = invoke(f, 1);\n"
      "  reloadTest();\n"
      "  var r2 = invoke(f, 1);\n"
      "  return '$r1 $r2';\n"
      "}\n";

  EXPECT_VALID(TestCase::SetReloadTestScript(kReloadScript));

  EXPECT_STREQ(
      "1 NoSuchMethodError: Closure call with mismatched arguments: "
      "function 'C.foo'",
      SimpleInvokeStr(lib, "main"));

  lib = Dart_RootLibrary();
  EXPECT_NON_NULL(lib);
}

TEST_CASE(IsolateReload_EnumEquality) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  x = Fruit.Banana;\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);

  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  if (x == Fruit.Banana) {\n"
      "    return 'yes';\n"
      "  } else {\n"
      "    return 'no';\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("yes", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumIdentical) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  x = Fruit.Banana;\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  if (identical(x, Fruit.Banana)) {\n"
      "    return 'yes';\n"
      "  } else {\n"
      "    return 'no';\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("yes", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumReorderIdentical) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  x = Fruit.Banana;\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Banana,\n"
      "  Apple,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  if (identical(x, Fruit.Banana)) {\n"
      "    return 'yes';\n"
      "  } else {\n"
      "    return 'no';\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("yes", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumAddition) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Cantaloupe,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  String r = '${Fruit.Apple.index}/${Fruit.Apple} ';\n"
      "  r += '${Fruit.Cantaloupe.index}/${Fruit.Cantaloupe} ';\n"
      "  r += '${Fruit.Banana.index}/${Fruit.Banana}';\n"
      "  return r;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("0/Fruit.Apple 1/Fruit.Cantaloupe 2/Fruit.Banana",
               SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumToNotEnum) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple\n"
      "}\n"
      "main() {\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class Fruit {\n"
      "  final int zero = 0;\n"
      "}\n"
      "main() {\n"
      "  return new Fruit().zero.toString();\n"
      "}\n";

  Dart_Handle result = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(result, "Enum class cannot be redefined to be a non-enum class");
}

TEST_CASE(IsolateReload_NotEnumToEnum) {
  const char* kScript =
      "class Fruit {\n"
      "  final int zero = 0;\n"
      "}\n"
      "main() {\n"
      "  return new Fruit().zero.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("0", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple\n"
      "}\n"
      "main() {\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle result = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_ERROR(result, "Class cannot be redefined to be a enum class");
}

TEST_CASE(IsolateReload_EnumDelete) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "  Cantaloupe,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  x = Fruit.Cantaloupe;\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  // Delete 'Cantaloupe' but make sure that we can still invoke toString,
  // and access the hashCode and index properties.

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  String r = '$x ${x.hashCode is int} ${x.index}';\n"
      "  return r;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Deleted enum value from Fruit true -1",
               SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumIdentityReload) {
  const char* kScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "  Cantaloupe,\n"
      "}\n"
      "var x;\n"
      "var y;\n"
      "var z;\n"
      "var w;\n"
      "main() {\n"
      "  x = { Fruit.Apple: Fruit.Apple.index,\n"
      "        Fruit.Banana: Fruit.Banana.index,\n"
      "        Fruit.Cantaloupe: Fruit.Cantaloupe.index};\n"
      "  y = Fruit.Apple;\n"
      "  z = Fruit.Banana;\n"
      "  w = Fruit.Cantaloupe;\n"
      "  return Fruit.Apple.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple,\n"
      "  Banana,\n"
      "  Cantaloupe,\n"
      "}\n"
      "var x;\n"
      "var y;\n"
      "var z;\n"
      "var w;\n"
      "bool identityCheck(Fruit f, int index) {\n"
      "  return identical(Fruit.values[index], f);\n"
      "}\n"
      "main() {\n"
      "  String r = '';\n"
      "  x.forEach((key, value) {\n"
      "    r += '${identityCheck(key, value)} ';\n"
      "  });\n"
      "  r += '${x[Fruit.Apple] == Fruit.Apple.index} ';\n"
      "  r += '${x[Fruit.Banana] == Fruit.Banana.index} ';\n"
      "  r += '${x[Fruit.Cantaloupe] == Fruit.Cantaloupe.index} ';\n"
      "  r += '${identical(y, Fruit.values[x[Fruit.Apple]])} ';\n"
      "  r += '${identical(z, Fruit.values[x[Fruit.Banana]])} ';\n"
      "  r += '${identical(w, Fruit.values[x[Fruit.Cantaloupe]])} ';\n"
      "  return r;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("true true true true true true true true true ",
               SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumShapeChange) {
  const char* kScript =
      "enum Fruit { Apple, Banana }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = Fruit.Apple;\n"
      "  return retained.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple('Apple', 'A'),\n"
      "  Banana('Banana', 'B');\n"
      "  const Fruit(this.name, this.initial);\n"
      "  final String name;\n"
      "  final String initial;\n"
      "}\n"
      "var retained;\n"
      "main() {\n"
      "  return retained.initial;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("A", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumShapeChangeAdd) {
  const char* kScript =
      "enum Fruit { Apple, Banana }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = Fruit.Apple;\n"
      "  return retained.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple('Apple', 'A'),\n"
      "  Banana('Banana', 'B'),\n"
      "  Cherry('Cherry', 'C');\n"
      "  const Fruit(this.name, this.initial);\n"
      "  final String name;\n"
      "  final String initial;\n"
      "}\n"
      "var retained;\n"
      "main() {\n"
      "  return Fruit.Cherry.initial;\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("C", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumShapeChangeRemove) {
  const char* kScript =
      "enum Fruit { Apple, Banana }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = Fruit.Banana;\n"
      "  return retained.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Banana", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "enum Fruit {\n"
      "  Apple('Apple', 'A');\n"
      "  const Fruit(this.name, this.initial);\n"
      "  final String name;\n"
      "  final String initial;\n"
      "}\n"
      "var retained;\n"
      "main() {\n"
      "  return retained.toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Deleted enum value from Fruit",
               SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumReferentShapeChangeAdd) {
  const char* kScript =
      "class Box {\n"
      "  final x;\n"
      "  const Box(this.x);\n"
      "}\n"
      "enum Fruit {\n"
      "  Apple('Apple', const Box('A')),\n"
      "  Banana('Banana', const Box('B')),\n"
      "  Cherry('Cherry', const Box('C')),\n"
      "  Durian('Durian', const Box('D')),\n"
      "  Elderberry('Elderberry', const Box('E')),\n"
      "  Fig('Fig', const Box('F')),\n"
      "  Grape('Grape', const Box('G')),\n"
      "  Huckleberry('Huckleberry', const Box('H')),\n"
      "  Jackfruit('Jackfruit', const Box('J'));\n"
      "  const Fruit(this.name, this.initial);\n"
      "  final String name;\n"
      "  final Box initial;\n"
      "}\n"
      "var retained;\n"
      "main() {\n"
      "  retained = Fruit.Apple;\n"
      "  return retained.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class Box {\n"
      "  final x;\n"
      "  final y;\n"
      "  final z;\n"
      "  const Box(this.x, this.y, this.z);\n"
      "}\n"
      "enum Fruit {\n"
      "  Apple('Apple', const Box('A', 0, 0)),\n"
      "  Banana('Banana', const Box('B', 0, 0)),\n"
      "  Cherry('Cherry', const Box('C', 0, 0)),\n"
      "  Durian('Durian', const Box('D', 0, 0)),\n"
      "  Elderberry('Elderberry', const Box('E', 0, 0)),\n"
      "  Fig('Fig', const Box('F', 0, 0)),\n"
      "  Grape('Grape', const Box('G', 0, 0)),\n"
      "  Huckleberry('Huckleberry', const Box('H', 0, 0)),\n"
      "  Jackfruit('Jackfruit', const Box('J', 0, 0)),\n"
      "  Lemon('Lemon', const Box('L', 0, 0));\n"
      "  const Fruit(this.name, this.initial);\n"
      "  final String name;\n"
      "  final Box initial;\n"
      "}\n"
      "var retained;\n"
      "main() {\n"
      "  return retained.toString();\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Fruit.Apple", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_EnumRetainedHash) {
  const char* kScript = R"(
enum A {
   A1(B.B1, 1),
   A2(null, 2),
   A3(B.B3, 3);
   const A(this.a, this.x);
   final a;
   final x;
}
enum B {
   B1(C.C1),
   B2(C.C2),
   B3(null);
   const B(this.b);
   final b;
}
enum C {
   C1(null),
   C2(A.A2),
   C3(A.A3);
   const C(this.c);
   final c;
}

var a1;
var a1_hash;
var a2;
var a2_hash;
var a3;
var a3_hash;
var b1;
var b1_hash;
var b2;
var b2_hash;
var b3;
var b3_hash;
var c1;
var c1_hash;
var c2;
var c2_hash;
var c3;
var c3_hash;

main() {
  a1 = A.A1;
  a1_hash = a1.hashCode;
  a2 = A.A2;
  a2_hash = a2.hashCode;
  a3 = A.A3;
  a3_hash = a3.hashCode;
  b1 = B.B1;
  b1_hash = b1.hashCode;
  b2 = B.B2;
  b2_hash = b2.hashCode;
  b3 = B.B3;
  b3_hash = b3.hashCode;
  c1 = C.C1;
  c1_hash = c1.hashCode;
  c2 = C.C2;
  c2_hash = c2.hashCode;
  c3 = C.C3;
  c3_hash = c3.hashCode;
  return 'okay';
}
)";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("okay", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript = R"(
enum A {
   A1(B.B1),
   A2(null),
   A3(B.B3);
   const A(this.a);
   final a;
}
enum B {
   B1(C.C1, 1),
   B2(C.C2, 2),
   B3(null, 3);
   const B(this.b, this.x);
   final b;
   final x;
}
enum C {
   C1(null),
   C2(A.A2),
   C3(A.A3);
   const C(this.c);
   final c;
}

var a1;
var a1_hash;
var a2;
var a2_hash;
var a3;
var a3_hash;
var b1;
var b1_hash;
var b2;
var b2_hash;
var b3;
var b3_hash;
var c1;
var c1_hash;
var c2;
var c2_hash;
var c3;
var c3_hash;

main() {
  if (!identical(a1, A.A1)) return "i-a1";
  if (a1.hashCode != A.A1.hashCode) return "h-a1";
  if (!identical(a2, A.A2)) return "i-a2";
  if (a2.hashCode != A.A2.hashCode) return "h-a2";
  if (!identical(a3, A.A3)) return "i-a3";
  if (a3.hashCode != A.A3.hashCode) return "h-a3";
  if (!identical(b1, B.B1)) return "i-b1";
  if (b1.hashCode != B.B1.hashCode) return "h-b1";
  if (!identical(b2, B.B2)) return "i-b2";
  if (b2.hashCode != B.B2.hashCode) return "h-b2";
  if (!identical(b3, B.B3)) return "i-b3";
  if (b3.hashCode != B.B3.hashCode) return "h-b3";
  if (!identical(c1, C.C1)) return "i-c1";
  if (c1.hashCode != C.C1.hashCode) return "h-c1";
  if (!identical(c2, C.C2)) return "i-c2";
  if (c2.hashCode != C.C2.hashCode) return "h-c2";
  if (!identical(c3, C.C3)) return "i-c3";
  if (c3.hashCode != C.C3.hashCode) return "h-c3";
  return 'okay';
}
)";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("okay", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_ConstantIdentical) {
  const char* kScript =
      "class Fruit {\n"
      "  final String name;\n"
      "  const Fruit(this.name);\n"
      "  String toString() => name;\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  x = const Fruit('Pear');\n"
      "  return x.toString();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, nullptr);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Pear", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class Fruit {\n"
      "  final String name;\n"
      "  const Fruit(this.name);\n"
      "  String toString() => name;\n"
      "}\n"
      "var x;\n"
      "main() {\n"
      "  if (identical(x, const Fruit('Pear'))) {\n"
      "    return 'yes';\n"
      "  } else {\n"
      "    return 'no';\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("yes", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelFunction) {
  const char* kScript =
      "deleted() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelFunctionArityChange) {
  const char* kScript =
      "deleted() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "deleted(newParameter) { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelAddTypeArguments) {
  const char* kScript =
      "deleted() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "deleted<A, B, C>() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelRemoveTypeArguments) {
  const char* kScript =
      "deleted<A, B, C>() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted<int, int, int>();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "deleted() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelMissingPassingTypeArguments) {
  const char* kScript =
      "deleted<A, B, C>() { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted<int, int, int>();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelFunctionEvaluationOrder) {
  const char* kScript =
      "first(flag) { if (flag) throw 'first!'; }\n"
      "deleted(_) { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = (bool flag) => deleted(first(flag));\n"
      "  return retained(false);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "first(flag) { if (flag) throw 'first!'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained(true);\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ("first!", result);  // Not NoSuchMethodError
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelFunctionLibraryDeleted) {
  // clang-format off
  Dart_SourceFile sourcefiles[] = {
    {
      "file:///test-app.dart",

      "import 'test-lib.dart';\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted();\n"
      "  return retained();\n"
      "}\n",
    },
    {
      "file:///test-lib.dart",

      "deleted() { return 'hello'; }\n",
    },
  };
  // clang-format on

  Dart_Handle lib = TestCase::LoadTestScriptWithDFE(
      sizeof(sourcefiles) / sizeof(Dart_SourceFile), sourcefiles,
      NULL /* resolver */, true /* finalize */, true /* incrementally */);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  // clang-format off
  Dart_SourceFile updated_sourcefiles[] = {
    {
      "file:///test-app.dart",

      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n",
    },
  };
  // clang-format on

  const uint8_t* kernel_buffer = NULL;
  intptr_t kernel_buffer_size = 0;
  char* error = TestCase::CompileTestScriptWithDFE(
      "file:///test-app.dart",
      sizeof(updated_sourcefiles) / sizeof(Dart_SourceFile),
      updated_sourcefiles, &kernel_buffer, &kernel_buffer_size,
      true /* incrementally */);
  EXPECT(error == NULL);
  EXPECT_NOTNULL(kernel_buffer);
  lib = TestCase::ReloadTestKernel(kernel_buffer, kernel_buffer_size);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  // What actually happens because we don't re-search imported libraries.
  EXPECT_STREQ(result, "hello");

  // What should happen and what did happen with the old VM frontend:
  // EXPECT_SUBSTRING("NoSuchMethodError", result);
  // EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelGetter) {
  const char* kScript =
      "get deleted { return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted;\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelSetter) {
  const char* kScript =
      "set deleted(x) {}\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => deleted = 'hello';\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_TopLevelSetterEvaluationOrder) {
  const char* kScript =
      "first(flag) { if (flag) throw 'first!'; return 'hello'; }\n"
      "set deleted(x) {}\n"
      "var retained;\n"
      "main() {\n"
      "  retained = (bool flag) => deleted = first(flag);\n"
      "  return retained(false);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "first(flag) { if (flag) throw 'first!'; return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained(true);\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ("first!", result);  // Not NoSuchMethodError
}

TEST_CASE(IsolateReload_CallDeleted_ClassFunction) {
  const char* kScript =
      "class C { static deleted() { return 'hello'; } }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassFunctionArityChange) {
  const char* kScript =
      "class C { static deleted() { return 'hello'; } }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C { static deleted(newParameter) { return 'hello'; } }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassFunctionEvaluationOrder) {
  const char* kScript =
      "first(flag) { if (flag) throw 'first!'; }\n"
      "class C { static deleted(_) { return 'hello'; } }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = (bool flag) => C.deleted(first(flag));\n"
      "  return retained(false);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "first(flag) { if (flag) throw 'first!'; }\n"
      "class C { }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained(true);\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ("first!", result);  // Not NoSuchMethodError
}

TEST_CASE(IsolateReload_CallDeleted_ClassGetter) {
  const char* kScript =
      "class C { static get deleted { return 'hello'; } }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted;\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassSetter) {
  const char* kScript =
      "class C { static set deleted(x) {}}\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted = 'hello';\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassSetterEvaluationOrder) {
  const char* kScript =
      "first(flag) { if (flag) throw 'first!'; return 'hello'; }\n"
      "class C { static set deleted(x) {}}\n"
      "var retained;\n"
      "main() {\n"
      "  retained = (bool flag) => C.deleted = first(flag);\n"
      "  return retained(false);\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "first(flag) { if (flag) throw 'first!'; return 'hello'; }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained(true);\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_STREQ("first!", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassGenerativeConstructor) {
  const char* kScript =
      "class C { C.deleted(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C {}\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassGenerativeConstructorArityChange) {
  const char* kScript =
      "class C { C.deleted(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C { C.deleted(newParameter); }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassGenerativeConstructorClassDeleted) {
  const char* kScript =
      "class C { C.deleted(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassFactoryConstructor) {
  const char* kScript =
      "class C { factory C.deleted() => new C(); C(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C {}\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassFactoryConstructorArityChange) {
  const char* kScript =
      "class C { factory C.deleted() => new C(); C(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C { factory C.deleted(newParameter) => new C(); C(); }\n"
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_ClassFactoryConstructorClassDeleted) {
  const char* kScript =
      "class C { factory C.deleted() => new C(); C(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = () => C.deleted().toString();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("Instance of \'C\'", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "var retained;\n"
      "main() {\n"
      "  try {\n"
      "    return retained();\n"
      "  } catch (e) {\n"
      "    return e.toString();\n"
      "  }\n"
      "}\n";

  lib = TestCase::ReloadTestScript(kReloadScript);
  EXPECT_VALID(lib);
  const char* result = SimpleInvokeStr(lib, "main");
  EXPECT_SUBSTRING("NoSuchMethodError", result);
  EXPECT_SUBSTRING("deleted", result);
}

TEST_CASE(IsolateReload_CallDeleted_SuperFunction) {
  const char* kScript =
      "class C { deleted() { return 'hello'; } }\n"
      "class D extends C { curry() => () => super.deleted(); }\n"
      "var retained;\n"
      "main() {\n"
      "  retained = new D().curry();\n"
      "  return retained();\n"
      "}\n";

  Dart_Handle lib = TestCase::LoadTestScript(kScript, NULL);
  EXPECT_VALID(lib);
  EXPECT_STREQ("hello", SimpleInvokeStr(lib, "main"));

  const char* kReloadScript =
      "class C {}\n"