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Unified Diff: test/mjsunit/harmony/typedarray-iteration.js

Issue 1139663005: Implement %TypedArray%.prototype.{map,filter,some,reduce,reduceRight} (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Fixes Created 5 years, 7 months ago
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Index: test/mjsunit/harmony/typedarray-iteration.js
diff --git a/test/mjsunit/harmony/typedarray-iteration.js b/test/mjsunit/harmony/typedarray-iteration.js
new file mode 100644
index 0000000000000000000000000000000000000000..85c509193d0671bdecbf02b7fc36e60af9e941c4
--- /dev/null
+++ b/test/mjsunit/harmony/typedarray-iteration.js
@@ -0,0 +1,196 @@
+// 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.
+
+// Flags: --harmony-arrays
+
+// Tests for standard TypedArray array iteration functions.
+
+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);
+ })();
+
+ (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);
+ }
+ })();
+
+ //
+ // %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;
+ }));
+ })();
+
+}

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