Implement %TypedArray%.{lastI,i}ndexOf

test/mjsunit/harmony/typedarray-indexing.js

+// 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
+
+var typedArrayConstructors = [
+  Uint8Array,
+  Int8Array,
+  Uint16Array,
+  Int16Array,
+  Uint32Array,
+  Int32Array,
+  Uint8ClampedArray,
+  Float32Array,
+  Float64Array
+];
+
+for (var constructor of typedArrayConstructors) {
+  var array = new constructor([1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3]);
+
+  // ----------------------------------------------------------------------
+  // %TypedArray%.prototype.indexOf.
+  // ----------------------------------------------------------------------
+
+  // Negative cases.
+  assertEquals(-1, new constructor([]).indexOf(1));
+  assertEquals(-1, array.indexOf(4));
+  assertEquals(-1, array.indexOf(3, array.length));
+
+  assertEquals(2, array.indexOf(3));
+  // Negative index out of range.
+  assertEquals(0, array.indexOf(1, -17));
+  // Negative index in rage.
+  assertEquals(3, array.indexOf(1, -11));
+  // Index in range.
+  assertEquals(3, array.indexOf(1, 1));
+  assertEquals(3, array.indexOf(1, 3));
+  assertEquals(6, array.indexOf(1, 4));
+
+  // Basic TypedArray function properties
+  assertEquals(1, array.indexOf.length);
+  assertThrows(function(){ array.indexOf.call([1], 1); }, TypeError);
+  Object.defineProperty(array, 'length', {value: 1});
+  assertEquals(array.indexOf(2), 1);
+
+
+  // ----------------------------------------------------------------------
+  // %TypedArray%.prototype.lastIndexOf.
+  // ----------------------------------------------------------------------
+  array = new constructor([1, 2, 3, 1, 2, 3, 1, 2, 3, 1, 2, 3]);
+
+  // Negative cases.
+  assertEquals(-1, new constructor([]).lastIndexOf(1));
+  assertEquals(-1, array.lastIndexOf(1, -17));
+
+  assertEquals(9, array.lastIndexOf(1));
+  // Index out of range.
+  assertEquals(9, array.lastIndexOf(1, array.length));
+  // Index in range.
+  assertEquals(0, array.lastIndexOf(1, 2));
+  assertEquals(3, array.lastIndexOf(1, 4));
+  assertEquals(3, array.lastIndexOf(1, 3));
+  // Negative index in range.
+  assertEquals(0, array.lastIndexOf(1, -11));
+
+  // Basic TypedArray function properties
+  assertEquals(1, array.lastIndexOf.length);
+  assertThrows(function(){ array.lastIndexOf.call([1], 1); }, TypeError);
+  Object.defineProperty(array, 'length', {value: 1});
+  assertEquals(array.lastIndexOf(2), 10);
+  delete array.length;
+}