| // 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/dart/element/type.dart'; |
| import 'package:analyzer/src/dart/element/type_schema.dart'; |
| import 'package:test/test.dart'; |
| import 'package:test_reflective_loader/test_reflective_loader.dart'; |
| |
| import '../../../generated/type_system_test.dart'; |
| |
| main() { |
| defineReflectiveSuite(() { |
| defineReflectiveTests(FlattenTypeTest); |
| }); |
| } |
| |
| @reflectiveTest |
| class FlattenTypeTest extends AbstractTypeSystemTest { |
| test_dynamic() { |
| _check(dynamicNone, 'dynamic'); |
| } |
| |
| test_interfaceType_none() { |
| _check(futureNone(intNone), 'int'); |
| _check(futureNone(intQuestion), 'int?'); |
| _check(futureNone(intStar), 'int*'); |
| |
| // otherwise if T is FutureOr<S> then flatten(T) = S |
| _check(futureOrNone(intNone), 'int'); |
| _check(futureOrNone(intQuestion), 'int?'); |
| _check(futureOrNone(intStar), 'int*'); |
| |
| var A = class_(name: 'A', interfaces: [ |
| futureNone(intNone), |
| ]); |
| _check(interfaceTypeNone(A), 'int'); |
| } |
| |
| test_interfaceType_question() { |
| _check(futureQuestion(intNone), 'int?'); |
| _check(futureQuestion(intQuestion), 'int?'); |
| _check(futureQuestion(intStar), 'int?'); |
| |
| _check(futureQuestion(listNone(intNone)), 'List<int>?'); |
| _check(futureQuestion(listQuestion(intNone)), 'List<int>?'); |
| _check(futureQuestion(listStar(intNone)), 'List<int>?'); |
| |
| _check(futureOrQuestion(intNone), 'int?'); |
| _check(futureOrQuestion(intQuestion), 'int?'); |
| _check(futureOrQuestion(intStar), 'int?'); |
| } |
| |
| test_interfaceType_star() { |
| _check(futureStar(intNone), 'int*'); |
| _check(futureStar(intQuestion), 'int*'); |
| _check(futureStar(intStar), 'int*'); |
| |
| _check(futureStar(listNone(intNone)), 'List<int>*'); |
| _check(futureStar(listQuestion(intNone)), 'List<int>*'); |
| _check(futureStar(listStar(intNone)), 'List<int>*'); |
| |
| _check(futureOrStar(intNone), 'int*'); |
| _check(futureOrStar(intQuestion), 'int*'); |
| _check(futureOrStar(intStar), 'int*'); |
| } |
| |
| test_typeParameterType_none() { |
| _check( |
| typeParameterTypeNone( |
| typeParameter('T', bound: futureNone(intNone)), |
| ), |
| 'int', |
| ); |
| |
| _check( |
| typeParameterTypeNone( |
| typeParameter('T'), |
| promotedBound: futureNone(intNone), |
| ), |
| 'int', |
| ); |
| } |
| |
| test_unknownInferredType() { |
| var type = UnknownInferredType.instance; |
| expect(typeSystem.flatten(type), same(type)); |
| } |
| |
| void _check(DartType T, String expected) { |
| var result = typeSystem.flatten(T); |
| expect( |
| result.getDisplayString(withNullability: true), |
| expected, |
| ); |
| } |
| } |