mirror of https://github.com/tc39/test262.git
51 lines
1.4 KiB
JavaScript
51 lines
1.4 KiB
JavaScript
// Copyright (C) 2017 Ecma International. 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: |
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Compare the contents of two arrays
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defines: [compareArray]
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---*/
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function compareArray(a, b) {
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if (b.length !== a.length) {
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return false;
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}
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for (var i = 0; i < a.length; i++) {
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if (!compareArray.isSameValue(b[i], a[i])) {
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return false;
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}
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}
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return true;
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}
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compareArray.isSameValue = function(a, b) {
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if (a === 0 && b === 0) return 1 / a === 1 / b;
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if (a !== a && b !== b) return true;
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return a === b;
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};
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compareArray.format = function(arrayLike) {
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return `[${[].map.call(arrayLike, String).join(', ')}]`;
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};
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assert.compareArray = function(actual, expected, message) {
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message = message === undefined ? '' : message;
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if (typeof message === 'symbol') {
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message = message.toString();
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}
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assert(actual != null, `Actual argument shouldn't be nullish. ${message}`);
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assert(expected != null, `Expected argument shouldn't be nullish. ${message}`);
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var format = compareArray.format;
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var result = compareArray(actual, expected);
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// The following prevents actual and expected from being iterated and evaluated
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// more than once unless absolutely necessary.
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if (!result) {
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assert(false, `Actual ${format(actual)} and expected ${format(expected)} should have the same contents. ${message}`);
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}
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};
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