pkg/front_end/test/textual_outline_test.dart

import "dart:convert";
import "package:front_end/src/fasta/util/textual_outline.dart";

main() {
  // Doesn't sort if not asked to perform modelling.
  String result = textualOutline(utf8.encode("""
b() { print("hello"); }
a() { print("hello"); }
"""), throwOnUnexpected: true, performModelling: false);
  if (result !=
      """
b() {}

a() {}""") {
    throw "Unexpected result: $result";
  }

  // Sort if asked to perform modelling.
  result = textualOutline(utf8.encode("""
b() { print("hello"); }
a() { print("hello"); }
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
a() {}

b() {}""") {
    throw "Unexpected result: $result";
  }

  // Content between braces or not doesn't make any difference.
  // Procedure without content.
  result = textualOutline(utf8.encode("""
a() {}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
a() {}""") {
    throw "Unexpected result: $result";
  }

  // Procedure with content.
  result = textualOutline(utf8.encode("""
a() {
  // Whatever
}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
a() {}""") {
    throw "Unexpected result: $result";
  }

  // Class without content.
  result = textualOutline(utf8.encode("""
class B {}
class A {}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
class A {}

class B {}""") {
    throw "Unexpected result: $result";
  }

  // Class without real content.
  result = textualOutline(utf8.encode("""
class A {
  // Whatever
}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
class A {}""") {
    throw "Unexpected result: $result";
  }

  // Has space between entries.
  result = textualOutline(utf8.encode("""
@a
@A(2)
typedef void F1();

@a
@A(3)
int f1, f2;
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
@a
@A(2)
typedef void F1();

@a
@A(3)
int f1, f2;""") {
    throw "Unexpected result: $result";
  }

  // Has space between entries.
  result = textualOutline(utf8.encode("""
@a
@A(2)
typedef void F1();
@a
@A(3)
int f1, f2;
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
@a
@A(2)
typedef void F1();

@a
@A(3)
int f1, f2;""") {
    throw "Unexpected result: $result";
  }

  // Knows about and can sort named mixin applications.
  result = textualOutline(utf8.encode("""
class C<T> = Object with A<Function(T)>;
class B<T> = Object with A<Function(T)>;
class A<T> {}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
class A<T> {}

class B<T> = Object with A<Function(T)>;

class C<T> = Object with A<Function(T)>;""") {
    throw "Unexpected result: $result";
  }

  // Knows about and can sort imports, but doesn't mix them with the other
  // content.
  result = textualOutline(utf8.encode("""
import "foo.dart" show B,
  A,
  C;
import "bar.dart";

main() {}

import "baz.dart";
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
import "bar.dart";
import "foo.dart" show B, A, C;

main() {}

import "baz.dart";""") {
    throw "Unexpected result: $result";
  }

  // Knows about and can sort exports, but doesn't mix them with the other
  // content.
  result = textualOutline(utf8.encode("""
export "foo.dart" show B,
  A,
  C;
export "bar.dart";

main() {}

export "baz.dart";
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
export "bar.dart";
export "foo.dart" show B, A, C;

main() {}

export "baz.dart";""") {
    throw "Unexpected result: $result";
  }

  // Knows about and can sort imports and exports,
  // but doesn't mix them with the other content.
  result = textualOutline(utf8.encode("""
export "foo.dart" show B,
  A,
  C;
import "foo.dart" show B,
  A,
  C;
export "bar.dart";
import "bar.dart";

main() {}

export "baz.dart";
import "baz.dart";
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
export "bar.dart";
export "foo.dart" show B, A, C;
import "bar.dart";
import "foo.dart" show B, A, C;

main() {}

export "baz.dart";
import "baz.dart";""") {
    throw "Unexpected result: $result";
  }

  // Knows about library, part and part of but they cannot be sorted.
  result = textualOutline(utf8.encode("""
part "foo.dart";
part of "foo.dart";
library foo;

bar() {
  // whatever
}
"""),
      throwOnUnexpected: true,
      performModelling: true,
      addMarkerForUnknownForTest: true);
  if (result !=
      """
part "foo.dart";

part of "foo.dart";

library foo;

bar() {}""") {
    throw "Unexpected result: $result";
  }
}