pkg/analyzer/test/src/diagnostics/implements_deferred_class_test.dart

// Copyright (c) 2020, 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:analyzer/src/diagnostic/diagnostic.dart' as diag;
import 'package:test_reflective_loader/test_reflective_loader.dart';

import '../dart/resolution/context_collection_resolution.dart';

main() {
  defineReflectiveSuite(() {
    defineReflectiveTests(ImplementsDeferredClassTest);
  });
}

@reflectiveTest
class ImplementsDeferredClassTest extends PubPackageResolutionTest {
  test_class_implements() async {
    newFile('$testPackageLibPath/lib1.dart', '''
library lib1;
class A {}
''');
    await assertErrorsInCode(
      '''
library root;
import 'lib1.dart' deferred as a;
class B implements a.A {}
''',
      [error(diag.implementsDeferredClass, 67, 3)],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: a
        period: .
        element: <testLibraryFragment>::@prefix2::a
      name: A
      element: package:test/lib1.dart::@class::A
      type: A
''');
  }

  test_class_implements_interfaceTypeTypedef() async {
    newFile('$testPackageLibPath/lib1.dart', '''
library lib1;
class A {}
typedef B = A;
''');
    await assertErrorsInCode(
      '''
library root;
import 'lib1.dart' deferred as a;
class C implements a.B {}
''',
      [error(diag.implementsDeferredClass, 67, 3)],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: a
        period: .
        element: <testLibraryFragment>::@prefix2::a
      name: B
      element: package:test/lib1.dart::@typeAlias::B
      type: A
        alias: package:test/lib1.dart::@typeAlias::B
''');
  }

  test_classTypeAlias() async {
    newFile('$testPackageLibPath/lib1.dart', '''
library lib1;
class A {}
''');
    await assertErrorsInCode(
      '''
library root;
import 'lib1.dart' deferred as a;
class B {}
class M {}
class C = B with M implements a.A;
''',
      [error(diag.implementsDeferredClass, 100, 3)],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: a
        period: .
        element: <testLibraryFragment>::@prefix2::a
      name: A
      element: package:test/lib1.dart::@class::A
      type: A
''');
  }

  test_extensionType_implements_class() async {
    newFile('$testPackageLibPath/a.dart', '''
class A {}
''');

    await assertErrorsInCode(
      '''
import 'a.dart' deferred as a;
extension type B(a.A it) implements a.A {}
''',
      [
        error(diag.typeAnnotationDeferredClass, 48, 3),
        error(diag.implementsDeferredClass, 67, 3),
      ],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: a
        period: .
        element: <testLibraryFragment>::@prefix2::a
      name: A
      element: package:test/a.dart::@class::A
      type: A
''');
  }

  test_extensionType_implements_extensionType() async {
    newFile('$testPackageLibPath/a.dart', '''
extension type A(int it) {}
''');

    await assertErrorsInCode(
      '''
import 'a.dart' deferred as a;
extension type B(int it) implements a.A {}
''',
      [error(diag.implementsDeferredClass, 67, 3)],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: a
        period: .
        element: <testLibraryFragment>::@prefix2::a
      name: A
      element: package:test/a.dart::@extensionType::A
      type: A
''');
  }

  test_mixin() async {
    await assertErrorsInCode(
      r'''
import 'dart:math' deferred as math;
mixin M implements math.Random {}
''',
      [error(diag.implementsDeferredClass, 56, 11)],
    );

    var node = findNode.singleImplementsClause;
    assertResolvedNodeText(node, r'''
ImplementsClause
  implementsKeyword: implements
  interfaces
    NamedType
      importPrefix: ImportPrefixReference
        name: math
        period: .
        element: <testLibraryFragment>::@prefix2::math
      name: Random
      element: dart:math::@class::Random
      type: Random
''');
  }
}