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// Copyright 2015 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Tests for standard TypedArray array iteration functions.
// Flags: --allow-natives-syntax
var typedArrayConstructors = [
Uint8Array,
Int8Array,
Uint16Array,
Int16Array,
Uint32Array,
Int32Array,
Uint8ClampedArray,
Float32Array,
Float64Array
];
function assertArrayLikeEquals(expected, value, type) {
assertEquals(value.__proto__, type.prototype);
assertEquals(expected.length, value.length);
for (var i = 0; i < value.length; ++i) {
assertEquals(expected[i], value[i]);
}
}
for (var constructor of typedArrayConstructors) {
(function TypedArrayFilterTest() {
// Simple use.
var a = new constructor([0, 1]);
assertArrayLikeEquals([0], a.filter(function(n) { return n == 0; }),
constructor);
assertArrayLikeEquals([0, 1], a, constructor);
// Use specified object as this object when calling the function.
var o = { value: 42 }
a = new constructor([1, 42, 3, 42, 4]);
assertArrayLikeEquals([42, 42], a.filter(function(n) {
return this.value == n
}, o), constructor);
// Modify original array.
a = new constructor([1, 42, 3, 42, 4]);
assertArrayLikeEquals([42, 42], a.filter(function(n, index, array) {
array[index] = 43; return 42 == n;
}), constructor);
assertArrayLikeEquals([43, 43, 43, 43, 43], a, constructor);
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
a = [];
new constructor([1, 2]).filter(function() { a.push(this) }, '');
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
new constructor([1, 2]).filter(function() { a.push(this) }, {});
assertEquals(a[0], a[1]);
// In strict mode primitive values should not be coerced to an object.
a = [];
new constructor([1, 2]).filter(function() {
'use strict';
a.push(this);
}, '');
assertEquals('', a[0]);
assertEquals(a[0], a[1]);
// Calling this method on other types is a TypeError
assertThrows(function() {
constructor.prototype.filter.call([], function() {});
}, TypeError);
// Shadowing the length property doesn't change anything
a = new constructor([1, 2]);
Object.defineProperty(a, 'length', { value: 1 });
assertArrayLikeEquals([2], a.filter(function(elt) {
return elt == 2;
}), constructor);
// Detached Operation
var array = new constructor([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
%ArrayBufferDetach(array.buffer);
assertThrows(() => array.filter(() => false), TypeError);
})();
(function TypedArrayMapTest() {
var a = new constructor([0, 1, 2, 3, 4]);
// Simple use.
var result = [1, 2, 3, 4, 5];
assertArrayLikeEquals(result, a.map(function(n) { return n + 1; }),
constructor);
assertEquals(a, a);
// Use specified object as this object when calling the function.
var o = { delta: 42 }
result = [42, 43, 44, 45, 46];
assertArrayLikeEquals(result, a.map(function(n) {
return this.delta + n;
}, o), constructor);
// Modify original array.
a = new constructor([0, 1, 2, 3, 4]);
result = [1, 2, 3, 4, 5];
assertArrayLikeEquals(result, a.map(function(n, index, array) {
array[index] = n + 1;
return n + 1;
}), constructor);
assertArrayLikeEquals(result, a, constructor);
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
a = [];
new constructor([1, 2]).map(function() { a.push(this) }, '');
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
new constructor([1, 2]).map(function() { a.push(this) }, {});
assertEquals(a[0], a[1]);
// In strict mode primitive values should not be coerced to an object.
a = [];
new constructor([1, 2]).map(function() { 'use strict'; a.push(this); }, '');
assertEquals('', a[0]);
assertEquals(a[0], a[1]);
// Test that the result is converted to the right type
assertArrayLikeEquals([3, 3], new constructor([1, 2]).map(function() {
return "3";
}), constructor);
if (constructor !== Float32Array && constructor !== Float64Array) {
assertArrayLikeEquals([0, 0], new constructor([1, 2]).map(function() {
return NaN;
}), constructor);
}
// Detached Operation
var array = new constructor([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
%ArrayBufferDetach(array.buffer);
assertThrows(() => array.map((v) => v), TypeError);
})();
//
// %TypedArray%.prototype.some
//
(function TypedArraySomeTest() {
var a = new constructor([0, 1, 2, 3, 4]);
// Simple use.
assertTrue(a.some(function(n) { return n == 3}));
assertFalse(a.some(function(n) { return n == 5}));
// Use specified object as this object when calling the function.
var o = { element: 42 };
a = new constructor([1, 42, 3]);
assertTrue(a.some(function(n) { return this.element == n; }, o));
a = new constructor([1]);
assertFalse(a.some(function(n) { return this.element == n; }, o));
// Modify original array.
a = new constructor([0, 1, 2, 3]);
assertTrue(a.some(function(n, index, array) {
array[index] = n + 1;
return n == 2;
}));
assertArrayLikeEquals([1, 2, 3, 3], a, constructor);
// Create a new object in each function call when receiver is a
// primitive value. See ECMA-262, Annex C.
a = [];
new constructor([1, 2]).some(function() { a.push(this) }, '');
assertTrue(a[0] !== a[1]);
// Do not create a new object otherwise.
a = [];
new constructor([1, 2]).some(function() { a.push(this) }, {});
assertEquals(a[0], a[1]);
// In strict mode primitive values should not be coerced to an object.
a = [];
new constructor([1, 2]).some(function() {
'use strict';
a.push(this);
}, '');
assertEquals('', a[0]);
assertEquals(a[0], a[1]);
// Calling this method on other types is a TypeError
assertThrows(function() {
constructor.prototype.some.call([], function() {});
}, TypeError);
// Shadowing the length property doesn't change anything
a = new constructor([1, 2]);
Object.defineProperty(a, 'length', { value: 1 });
assertEquals(true, a.some(function(elt) { return elt == 2; }));
assertEquals(false, Array.prototype.some.call(a, function(elt) {
return elt == 2;
}));
// Detached Operation
var array = new constructor([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]);
%ArrayBufferDetach(array.buffer);
assertThrows(() => array.some((v) => false), TypeError);
})();
}
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