tests/hot_reload/complex_inheritance_change/main.1.dart

// Copyright (c) 2025, 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.

import 'package:expect/expect.dart';
import 'package:reload_test/reload_test_utils.dart';

// Adapted from:
// https://github.com/dart-lang/sdk/blob/1a486499bf73ee5b007abbe522b94869a1f36d02/runtime/vm/isolate_reload_test.cc#L959

class C {
  String name;
  C(this.name);
}

class X extends C {
  X(name) : super(name);
}

class A extends X {
  A(name) : super(name);
}

helper() {
  list.add(new X('x'));
}

var list;

check() {
  Expect.type<A>(list[0]);
  Expect.type<C>(list[0]);
  Expect.type<X>(list[0]);
  Expect.type<A>(list[1]);
  Expect.type<C>(list[1]);
  Expect.type<X>(list[1]);
  Expect.notType<A>(list[2]);
  Expect.type<C>(list[2]);
  Expect.notType<X>(list[2]);
  Expect.notType<A>(list[3]);
  Expect.type<C>(list[3]);
  Expect.type<X>(list[3]);
}

Future<void> main() async {
  check();
  await hotReload();

  helper();
  check();
  await hotReload();

  // Revive the class B and make sure all allocated instances take
  // their place in the inheritance hierarchy.
  check();
}

/** DIFF **/
/*
 // Adapted from:
 // https://github.com/dart-lang/sdk/blob/1a486499bf73ee5b007abbe522b94869a1f36d02/runtime/vm/isolate_reload_test.cc#L959
 
-class A {
+class C {
   String name;
-  A(this.name);
+  C(this.name);
 }
 
-class B extends A {
-  B(name) : super(name);
+class X extends C {
+  X(name) : super(name);
 }
 
-class C extends B {
-  C(name) : super(name);
+class A extends X {
+  A(name) : super(name);
 }
 
-helper() {}
+helper() {
+  list.add(new X('x'));
+}
 
-var list = <dynamic>[A('a'), B('b'), C('c')];
+var list;
 
 check() {
   Expect.type<A>(list[0]);
-  Expect.notType<B>(list[0]);
-  Expect.notType<C>(list[0]);
+  Expect.type<C>(list[0]);
+  Expect.type<X>(list[0]);
   Expect.type<A>(list[1]);
-  Expect.type<B>(list[1]);
-  Expect.notType<C>(list[1]);
-  Expect.type<A>(list[2]);
-  Expect.type<B>(list[2]);
+  Expect.type<C>(list[1]);
+  Expect.type<X>(list[1]);
+  Expect.notType<A>(list[2]);
   Expect.type<C>(list[2]);
+  Expect.notType<X>(list[2]);
+  Expect.notType<A>(list[3]);
+  Expect.type<C>(list[3]);
+  Expect.type<X>(list[3]);
 }
 
 Future<void> main() async {
*/