mirror of https://github.com/tc39/test262.git
90 lines
2.5 KiB
JavaScript
90 lines
2.5 KiB
JavaScript
// 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 TypedArray objects.
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defines:
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- typedArrayConstructors
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- floatArrayConstructors
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- intArrayConstructors
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- TypedArray
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- testWithTypedArrayConstructors
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- testTypedArrayConversions
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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 typedArrayConstructors = [
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Float64Array,
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Float32Array,
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Int32Array,
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Int16Array,
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Int8Array,
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Uint32Array,
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Uint16Array,
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Uint8Array,
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Uint8ClampedArray
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];
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var floatArrayConstructors = typedArrayConstructors.slice(0, 2);
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var intArrayConstructors = typedArrayConstructors.slice(2, 7);
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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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/**
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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 testWithTypedArrayConstructors(f, selected) {
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var constructors = selected || typedArrayConstructors;
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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 testTypedArrayConversions(byteConversionValues, fn) {
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var values = byteConversionValues.values;
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var expected = byteConversionValues.expected;
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testWithTypedArrayConstructors(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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