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// Copyright (C) 2015 André Bargull. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: |
Collection of functions used to assert the correctness of TypedArray objects.
---*/
/**
* Array containing every typed array constructor.
*/
var typedArrayConstructors = [
Float64Array,
Float32Array,
Int32Array,
Int16Array,
Int8Array,
Uint32Array,
Uint16Array,
Uint8Array,
Uint8ClampedArray
];
/**
* The %TypedArray% intrinsic constructor function.
*/
var TypedArray = Object.getPrototypeOf(Int8Array);
/**
* Callback for testing a typed array constructor.
*
* @callback typedArrayConstructorCallback
* @param {Function} Constructor the constructor object to test with.
*/
/**
* Calls the provided function for every typed array constructor.
*
* @param {typedArrayConstructorCallback} f - the function to call for each typed array constructor.
* @param {Array} selected - An optional Array with filtered typed arrays
*/
function testWithTypedArrayConstructors(f, selected) {
var constructors = selected || typedArrayConstructors;
for (var i = 0; i < constructors.length; ++i) {
var constructor = constructors[i];
try {
f(constructor);
} catch (e) {
e.message += " (Testing with " + constructor.name + ".)";
throw e;
}
}
}
/**
* Helper for conversion operations on TypedArrays, the expected values
* properties are indexed in order to match the respective value for each
* TypedArray constructor
* @param {Function} fn - the function to call for each constructor and value.
* will be called with the constructor, value, expected
* value, and a initial value that can be used to avoid
* a false positive with an equivalent expected value.
*/
function testTypedArrayConversions(byteConversionValues, fn) {
var values = byteConversionValues.values;
var expected = byteConversionValues.expected;
testWithTypedArrayConstructors(function(TA) {
var name = TA.name.slice(0, -5);
return values.forEach(function(value, index) {
var exp = expected[name][index];
var initial = 0;
if (exp === 0) {
initial = 1;
}
fn(TA, value, exp, initial);
});
});
}
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