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166d474257
Cf. https://github.com/dart-lang/sdk/issues/46207, the semantics of the platform class `Symbol` was changed such that all string argumnts are accepted (previously, only some strings were accepted). Change-Id: I1d2b093e4fdbb5dabf17b7a53c70e9787a7a76a4 Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/205480 Reviewed-by: Jens Johansen <jensj@google.com> Commit-Queue: Erik Ernst <eernst@google.com>
59 lines
1.5 KiB
Dart
59 lines
1.5 KiB
Dart
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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// Basic test of Symbol class.
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main() {
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var x;
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print(x = const Symbol('fisk'));
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try {
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print(const Symbol(0)); //# 01: compile-time error
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} on NoSuchMethodError {
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print('Caught NoSuchMethodError');
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} on TypeError {
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print('Caught TypeError');
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}
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print(const Symbol('0'));
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print(const Symbol('_'));
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print(new Symbol('0'));
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print(new Symbol('_'));
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if (!identical(const Symbol('fisk'), x)) {
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throw 'Symbol constant is not canonicalized';
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}
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if (const Symbol('fisk') != x) {
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throw 'Symbol constant is not equal to itself';
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}
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if (const Symbol('fisk') != new Symbol('fisk')) {
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throw 'Symbol constant is not equal to its non-const equivalent';
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}
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if (new Symbol('fisk') != new Symbol('fisk')) {
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throw 'new Symbol is not equal to its equivalent';
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}
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if (new Symbol('fisk') == new Symbol('hest')) {
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throw 'unrelated Symbols are equal';
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}
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if (new Symbol('fisk') == new Object()) {
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throw 'unrelated objects are equal';
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}
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x.hashCode as int;
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new Symbol('fisk').hashCode as int;
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if (new Symbol('fisk').hashCode != x.hashCode) {
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throw "non-const Symbol's hashCode not equal to its const equivalent";
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}
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if (new Symbol('') != Symbol.empty) {
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throw 'empty Symbol not equals to itself';
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}
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}
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