| // Copyright (c) 2011, 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. |
| // Test that instanceof works correctly with type variables. |
| |
| // @dart = 2.9 |
| |
| part of GenericInstanceofTest.dart; |
| |
| class Foo<T> { |
| Foo() {} |
| |
| bool isT(x) { |
| // Untyped parameter to ensure that the static type |
| // does not affect the result. |
| return x is T; |
| } |
| |
| bool isListT(x) { |
| return x is List<T>; |
| } |
| } |
| |
| class GenericInstanceof { |
| static void testMain() { |
| // Using Object instead of String to ensure that the static type |
| // does not affect the result. |
| Foo<Object> fooObject = new Foo<String>(); |
| Expect.equals(true, fooObject.isT("string")); |
| Expect.equals(false, fooObject.isT(1)); |
| |
| Foo<String> fooString = new Foo<String>(); |
| Expect.equals(true, fooString.isT("string")); |
| Expect.equals(false, fooString.isT(1)); |
| |
| // Not providing a type argument to ensure that the static type |
| // does not affect the result. |
| { |
| Foo foo = new Foo<String>(); |
| Expect.equals(true, foo.isT("string")); |
| Expect.equals(false, foo.isT(1)); |
| } |
| { |
| Foo foo = new Foo(); |
| Expect.equals(true, foo.isT(new List(5))); |
| Expect.equals(true, foo.isT(new List<Object>(5))); |
| Expect.equals(true, foo.isT(new List<int>(5))); |
| Expect.equals(true, foo.isT(new List<num>(5))); |
| Expect.equals(true, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<List>(); |
| Expect.equals(true, foo.isT(new List(5))); |
| Expect.equals(true, foo.isT(new List<Object>(5))); |
| Expect.equals(true, foo.isT(new List<int>(5))); |
| Expect.equals(true, foo.isT(new List<num>(5))); |
| Expect.equals(true, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<List<Object>>(); |
| Expect.equals(true, foo.isT(new List(5))); |
| Expect.equals(true, foo.isT(new List<Object>(5))); |
| Expect.equals(true, foo.isT(new List<int>(5))); |
| Expect.equals(true, foo.isT(new List<num>(5))); |
| Expect.equals(true, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<List<int>>(); |
| Expect.equals(false, foo.isT(new List(5))); |
| Expect.equals(false, foo.isT(new List<Object>(5))); |
| Expect.equals(true, foo.isT(new List<int>(5))); |
| Expect.equals(false, foo.isT(new List<num>(5))); |
| Expect.equals(false, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<List<num>>(); |
| Expect.equals(false, foo.isT(new List(5))); |
| Expect.equals(false, foo.isT(new List<Object>(5))); |
| Expect.equals(true, foo.isT(new List<int>(5))); |
| Expect.equals(true, foo.isT(new List<num>(5))); |
| Expect.equals(false, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<List<String>>(); |
| Expect.equals(false, foo.isT(new List(5))); |
| Expect.equals(false, foo.isT(new List<Object>(5))); |
| Expect.equals(false, foo.isT(new List<int>(5))); |
| Expect.equals(false, foo.isT(new List<num>(5))); |
| Expect.equals(true, foo.isT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo(); |
| Expect.equals(true, foo.isListT(new List(5))); |
| Expect.equals(true, foo.isListT(new List<Object>(5))); |
| Expect.equals(true, foo.isListT(new List<int>(5))); |
| Expect.equals(true, foo.isListT(new List<num>(5))); |
| Expect.equals(true, foo.isListT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<Object>(); |
| Expect.equals(true, foo.isListT(new List(5))); |
| Expect.equals(true, foo.isListT(new List<Object>(5))); |
| Expect.equals(true, foo.isListT(new List<int>(5))); |
| Expect.equals(true, foo.isListT(new List<num>(5))); |
| Expect.equals(true, foo.isListT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<int>(); |
| Expect.equals(false, foo.isListT(new List(5))); |
| Expect.equals(false, foo.isListT(new List<Object>(5))); |
| Expect.equals(true, foo.isListT(new List<int>(5))); |
| Expect.equals(false, foo.isListT(new List<num>(5))); |
| Expect.equals(false, foo.isListT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<num>(); |
| Expect.equals(false, foo.isListT(new List(5))); |
| Expect.equals(false, foo.isListT(new List<Object>(5))); |
| Expect.equals(true, foo.isListT(new List<int>(5))); |
| Expect.equals(true, foo.isListT(new List<num>(5))); |
| Expect.equals(false, foo.isListT(new List<String>(5))); |
| } |
| { |
| Foo foo = new Foo<String>(); |
| Expect.equals(false, foo.isListT(new List(5))); |
| Expect.equals(false, foo.isListT(new List<Object>(5))); |
| Expect.equals(false, foo.isListT(new List<int>(5))); |
| Expect.equals(false, foo.isListT(new List<num>(5))); |
| Expect.equals(true, foo.isListT(new List<String>(5))); |
| } |
| } |
| } |