mirror of https://github.com/tc39/test262.git
35 lines
1.0 KiB
JavaScript
35 lines
1.0 KiB
JavaScript
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// Copyright (C) 2018 Peter Wong. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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description: Compare the values of an iterator with an array of expected values
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---*/
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// Example:
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//
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// function* numbers() {
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// yield 1;
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// yield 2;
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// yield 3;
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// }
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//
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// compareIterator(numbers(), [
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// v => assert.sameValue(v, 1),
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// v => assert.sameValue(v, 2),
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// v => assert.sameValue(v, 3),
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// ]);
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//
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assert.compareIterator = function(iter, validators, message) {
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message = message || '';
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var i, result;
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for (i = 0; i < validators.length; i++) {
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result = iter.next();
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assert(!result.done, 'Expected ' + i + ' values(s). Instead iterator only produced ' + (i - 1) + ' value(s). ' + message);
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validators[i](result.value);
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}
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result = iter.next();
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assert(result.done, 'Expected only ' + i + ' values(s). Instead iterator produced more. ' + message);
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assert.sameValue(result.value, undefined, 'Expected value of `undefined` when iterator completes. ' + message);
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}
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