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| 1 // Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file |
| 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. |
| 4 |
| 5 // Basic test of Symbol class. |
| 6 |
| 7 main() { |
| 8 var x; |
| 9 print(x = const Symbol('fisk')); |
| 10 |
| 11 try { |
| 12 print(const Symbol(0)); /// 01: compile-time error |
| 13 } on NoSuchMethodError { |
| 14 print('Caught NoSuchMethodError'); |
| 15 } on TypeError { |
| 16 print('Caught TypeError'); |
| 17 } |
| 18 |
| 19 try { |
| 20 print(const Symbol('0')); /// 02: compile-time error |
| 21 } on ArgumentError catch (e) { |
| 22 print('Caught $e'); |
| 23 } |
| 24 |
| 25 try { |
| 26 print(const Symbol('_')); /// 03: compile-time error |
| 27 } on ArgumentError catch (e) { |
| 28 print('Caught $e'); |
| 29 } |
| 30 |
| 31 try { |
| 32 var y = 0; |
| 33 print(new Symbol(y)); |
| 34 throw 'Expected a NoSuchMethodError or a TypeError'; |
| 35 } on NoSuchMethodError { |
| 36 print('Caught NoSuchMethodError'); |
| 37 } on TypeError { |
| 38 print('Caught TypeError'); |
| 39 } |
| 40 |
| 41 try { |
| 42 print(new Symbol('0')); |
| 43 throw 'Expected an ArgumentError'; |
| 44 } on ArgumentError catch (e) { |
| 45 print('Caught $e'); |
| 46 } |
| 47 |
| 48 try { |
| 49 print(new Symbol('_')); |
| 50 throw 'Expected an ArgumentError'; |
| 51 } on ArgumentError catch (e) { |
| 52 print('Caught $e'); |
| 53 } |
| 54 |
| 55 if (!identical(const Symbol('fisk'), x)) { |
| 56 throw 'Symbol constant is not canonicalized'; |
| 57 } |
| 58 |
| 59 if (const Symbol('fisk') != x) { |
| 60 throw 'Symbol constant is not equal to itself'; |
| 61 } |
| 62 |
| 63 if (const Symbol('fisk') != new Symbol('fisk')) { |
| 64 throw 'Symbol constant is not equal to its non-const equivalent'; |
| 65 } |
| 66 |
| 67 if (new Symbol('fisk') != new Symbol('fisk')) { |
| 68 throw 'new Symbol is not equal to its equivalent'; |
| 69 } |
| 70 |
| 71 if (new Symbol('fisk') == new Symbol('hest')) { |
| 72 throw 'unrelated Symbols are equal'; |
| 73 } |
| 74 |
| 75 if (new Symbol('fisk') == new Object()) { |
| 76 throw 'unrelated objects are equal'; |
| 77 } |
| 78 |
| 79 x.hashCode as int; |
| 80 |
| 81 new Symbol('fisk').hashCode as int; |
| 82 |
| 83 if (new Symbol('fisk').hashCode != x.hashCode) { |
| 84 throw "non-const Symbol's hashCode not equal to its const equivalent"; |
| 85 } |
| 86 |
| 87 if (new Symbol('') != const Symbol('')) { |
| 88 throw 'empty Symbol not equals to itself'; |
| 89 } |
| 90 } |
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