mirror of https://github.com/tc39/test262.git
53 lines
1.7 KiB
JavaScript
53 lines
1.7 KiB
JavaScript
/**
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* Reviewed
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* Add length property check for function forms in the language folder
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*/
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function shouldBe(actual, expected) {
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if (actual !== expected)
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throw new Error('bad value: ' + actual);
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}
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function shouldThrow(func, errorMessage) {
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var errorThrown = false;
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var error = null;
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try {
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func();
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} catch (e) {
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errorThrown = true;
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error = e;
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}
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if (!errorThrown)
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throw new Error('not thrown');
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if (String(error) !== errorMessage)
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throw new Error(`bad error: ${String(error)}`);
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}
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{
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shouldBe(JSON.stringify(Object.getOwnPropertyNames(Array.prototype.filter).sort()), `["length","name"]`);
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shouldBe(Array.prototype.filter.length, 1);
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shouldBe(JSON.stringify(Object.getOwnPropertyDescriptor(Array.prototype.filter, 'length')), `{"value":1,"writable":false,"enumerable":false,"configurable":true}`);
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shouldBe(delete Array.prototype.filter.length, true);
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shouldBe(JSON.stringify(Object.getOwnPropertyNames(Array.prototype.filter).sort()), `["name"]`);
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}
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{
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shouldThrow(function () {
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"use strict";
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Array.prototype.forEach.length = 42;
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}, `TypeError: Attempted to assign to readonly property.`);
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}
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{
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var resolve = null;
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var reject = null;
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new Promise(function (arg0, arg1) {
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resolve = arg0;
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reject = arg1;
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});
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shouldBe(resolve.length, 1);
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shouldBe(JSON.stringify(Object.getOwnPropertyDescriptor(resolve, 'length')), `{"value":1,"writable":false,"enumerable":false,"configurable":true}`);
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shouldBe(reject.length, 1);
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shouldBe(JSON.stringify(Object.getOwnPropertyDescriptor(reject, 'length')), `{"value":1,"writable":false,"enumerable":false,"configurable":true}`);
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}
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