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| 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
| 2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
| 3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
| 4 | 4 |
| 5 import "package:expect/expect.dart"; |
| 6 |
| 5 // Dart test for deeply nested generic types. | 7 // Dart test for deeply nested generic types. |
| 6 | 8 |
| 7 /** A natural number aka Peano number. */ | 9 /** A natural number aka Peano number. */ |
| 8 abstract class N { | 10 abstract class N { |
| 9 N add1(); | 11 N add1(); |
| 10 N sub1(); | 12 N sub1(); |
| 11 } | 13 } |
| 12 | 14 |
| 13 /** Zero element. */ | 15 /** Zero element. */ |
| 14 class Z implements N { | 16 class Z implements N { |
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| 75 Expect.isFalse(IsEven(NFromInt(1))); | 77 Expect.isFalse(IsEven(NFromInt(1))); |
| 76 Expect.isTrue(IsEven(NFromInt(2))); | 78 Expect.isTrue(IsEven(NFromInt(2))); |
| 77 Expect.isFalse(IsEven(NFromInt(3))); | 79 Expect.isFalse(IsEven(NFromInt(3))); |
| 78 Expect.isTrue(IsEven(NFromInt(4))); | 80 Expect.isTrue(IsEven(NFromInt(4))); |
| 79 | 81 |
| 80 Expect.equals(0, IntFromN(NFromInt(0))); | 82 Expect.equals(0, IntFromN(NFromInt(0))); |
| 81 Expect.equals(1, IntFromN(NFromInt(1))); | 83 Expect.equals(1, IntFromN(NFromInt(1))); |
| 82 Expect.equals(2, IntFromN(NFromInt(2))); | 84 Expect.equals(2, IntFromN(NFromInt(2))); |
| 83 Expect.equals(50, IntFromN(NFromInt(50))); | 85 Expect.equals(50, IntFromN(NFromInt(50))); |
| 84 } | 86 } |
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