| // Copyright (c) 2019, 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/error/codes.dart'; |
| import 'package:test_reflective_loader/test_reflective_loader.dart'; |
| |
| import '../dart/resolution/driver_resolution.dart'; |
| |
| main() { |
| defineReflectiveSuite(() { |
| defineReflectiveTests(UnusedFieldTest); |
| }); |
| } |
| |
| @reflectiveTest |
| class UnusedFieldTest extends DriverResolutionTest { |
| @override |
| bool get enableUnusedElement => true; |
| |
| test_unusedField_isUsed_argument() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f = 0; |
| main() { |
| print(++_f); |
| } |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_implicitThis() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| main() { |
| print(_f); |
| } |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_implicitThis_expressionFunctionBody() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| m() => _f; |
| } |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_implicitThis_subclass() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| main() { |
| print(_f); |
| } |
| } |
| class B extends A { |
| int _f; |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_qualified_propagatedElement() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| } |
| main() { |
| var a = new A(); |
| print(a._f); |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_qualified_staticElement() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| } |
| main() { |
| A a = new A(); |
| print(a._f); |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_isUsed_reference_qualified_unresolved() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| int _f; |
| } |
| main(a) { |
| print(a._f); |
| } |
| print(x) {} |
| '''); |
| } |
| |
| test_unusedField_notUsed_compoundAssign() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f; |
| main() { |
| _f += 2; |
| } |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_constructorFieldInitializers() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f; |
| A() : _f = 0; |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_fieldFormalParameter() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f; |
| A(this._f); |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_noReference() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f; |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_nullAssign() async { |
| await assertNoErrorsInCode(r''' |
| class A { |
| var _f; |
| m() { |
| _f ??= doSomething(); |
| } |
| } |
| doSomething() => 0; |
| '''); |
| } |
| |
| test_unusedField_notUsed_postfixExpr() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f = 0; |
| main() { |
| _f++; |
| } |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_prefixExpr() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f = 0; |
| main() { |
| ++_f; |
| } |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| |
| test_unusedField_notUsed_simpleAssignment() async { |
| await assertErrorsInCode(r''' |
| class A { |
| int _f; |
| m() { |
| _f = 1; |
| } |
| } |
| main(A a) { |
| a._f = 2; |
| } |
| ''', [HintCode.UNUSED_FIELD]); |
| } |
| } |