mirror of https://github.com/tc39/test262.git
77 lines
2.3 KiB
JavaScript
77 lines
2.3 KiB
JavaScript
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// Copyright (C) 2015 André Bargull. 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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Collection of functions used to assert the correctness of BigInt TypedArray objects.
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---*/
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/**
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* Array containing every typed array constructor.
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*/
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var BigIntTypedArrayConstructors = [
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BigInt64Array,
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BigUint64Array
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];
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/**
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* The %TypedArray% intrinsic constructor function.
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*/
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var TypedArray = Object.getPrototypeOf(Int8Array);
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function convertToBigInt(x) {
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return (Array.isArray(x)) ? x.map(convertToBigInt) : BigInt(x);
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}
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/**
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* Callback for testing a typed array constructor.
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*
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* @callback typedArrayConstructorCallback
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* @param {Function} Constructor the constructor object to test with.
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*/
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/**
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* Calls the provided function for every typed array constructor.
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*
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* @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
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* @param {Array} selected - An optional Array with filtered typed arrays
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*/
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function testWithBigIntTypedArrayConstructors(f, selected) {
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var constructors = selected || BigIntTypedArrayConstructors;
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for (var i = 0; i < constructors.length; ++i) {
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var constructor = constructors[i];
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try {
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f(constructor);
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} catch (e) {
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e.message += " (Testing with " + constructor.name + ".)";
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throw e;
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}
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}
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}
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/**
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* Helper for conversion operations on TypedArrays, the expected values
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* properties are indexed in order to match the respective value for each
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* TypedArray constructor
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* @param {Function} fn - the function to call for each constructor and value.
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* will be called with the constructor, value, expected
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* value, and a initial value that can be used to avoid
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* a false positive with an equivalent expected value.
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*/
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function testBigIntTypedArrayConversions(byteConversionValues, fn) {
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var values = byteConversionValues.values;
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var expected = byteConversionValues.expected;
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testWithBigIntTypedArrayConstructors(function(TA) {
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var name = TA.name.slice(0, -5);
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return values.forEach(function(value, index) {
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var exp = expected[name][index];
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var initial = 0;
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if (exp === 0) {
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initial = 1;
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}
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fn(TA, value, exp, initial);
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});
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});
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}
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