Add tests for ArrayBuffer.isView

test/built-ins/ArrayBuffer/isView/arg-has-no-viewedarraybuffer.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false if arg has no [[ViewedArrayBuffer]] internal slot.
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+---*/
+
+assert.sameValue(ArrayBuffer.isView({}), false, "ordinary object");
+assert.sameValue(ArrayBuffer.isView([]), false, "Array");

test/built-ins/ArrayBuffer/isView/arg-is-arraybuffer.js

@@ -0,0 +1,18 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false from an instance of ArrayBuffer
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+---*/
+
+var sample = new ArrayBuffer(1);
+
+assert.sameValue(ArrayBuffer.isView(sample), false);

test/built-ins/ArrayBuffer/isView/arg-is-dataview-buffer.js

@@ -0,0 +1,19 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false from DataView's instance `.buffer`
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [DataView]
+---*/
+
+var sample = new DataView(new ArrayBuffer(1), 0, 0).buffer;
+
+assert.sameValue(ArrayBuffer.isView(sample), false);

test/built-ins/ArrayBuffer/isView/arg-is-dataview-constructor.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false if arg is the DataView constructor
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [DataView]
+---*/
+
+assert.sameValue(ArrayBuffer.isView(DataView), false, "DataView");

test/built-ins/ArrayBuffer/isView/arg-is-dataview-subclass-instance.js

@@ -0,0 +1,21 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return true if arg is an instance from a subclass of DataView
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [class, DataView]
+---*/
+
+class DV extends DataView {}
+
+var sample = new DV(new ArrayBuffer(1), 0, 0);
+
+assert(ArrayBuffer.isView(sample));

test/built-ins/ArrayBuffer/isView/arg-is-dataview.js

@@ -0,0 +1,19 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return true if is an instance of DataView
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [DataView]
+---*/
+
+var sample = new DataView(new ArrayBuffer(1), 0, 0);
+
+assert.sameValue(ArrayBuffer.isView(sample), true);

test/built-ins/ArrayBuffer/isView/arg-is-not-object.js

@@ -0,0 +1,18 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false if arg is not Object
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  ...
+---*/
+
+assert.sameValue(ArrayBuffer.isView(null), false, "null");
+assert.sameValue(ArrayBuffer.isView(undefined), false, "undefined");
+assert.sameValue(ArrayBuffer.isView(1), false, "number");
+assert.sameValue(ArrayBuffer.isView(""), false, "string");

test/built-ins/ArrayBuffer/isView/arg-is-typedarray-buffer.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false from TypedArray's instance `.buffer`
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [TypedArray]
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(ctor) {
+  var sample = new ctor().buffer;
+
+  assert.sameValue(ArrayBuffer.isView(sample), false);
+});

test/built-ins/ArrayBuffer/isView/arg-is-typedarray-constructor.js

@@ -0,0 +1,20 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false if arg is a TypedArray constructor
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [TypedArray]
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(ctor) {
+  assert.sameValue(ArrayBuffer.isView(ctor), false);
+});

test/built-ins/ArrayBuffer/isView/arg-is-typedarray-subclass-instance.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return true if arg is an instance from a subclass of TypedArray
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [class, TypedArray]
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(ctor) {
+  class TA extends ctor {}
+
+  var sample = new TA();
+
+  assert(ArrayBuffer.isView(sample));
+});

test/built-ins/ArrayBuffer/isView/arg-is-typedarray.js

@@ -0,0 +1,22 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return true if arg is an instance of TypedArray
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [TypedArray]
+includes: [testTypedArray.js]
+---*/
+
+testWithTypedArrayConstructors(function(ctor) {
+  var sample = new ctor();
+
+  assert.sameValue(ArrayBuffer.isView(sample), true);
+});

test/built-ins/ArrayBuffer/isView/invoked-as-a-fn.js

@@ -0,0 +1,29 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  `isView` can be invoked as a function
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  2. If arg has a [[ViewedArrayBuffer]] internal slot, return true.
+  3. Return false.
+features: [TypedArray, DataView]
+includes: [testTypedArray.js]
+---*/
+
+var isView = ArrayBuffer.isView;
+
+testWithTypedArrayConstructors(function(ctor) {
+  var sample = new ctor();
+  assert.sameValue(isView(sample), true, "instance of TypedArray");
+});
+
+var dv = new DataView(new ArrayBuffer(1), 0, 0);
+assert.sameValue(isView(dv), true, "instance of DataView");
+
+assert.sameValue(isView(), false, "undefined arg");
+assert.sameValue(isView({}), false, "ordinary object");

test/built-ins/ArrayBuffer/isView/no-arg.js

@@ -0,0 +1,15 @@
+// Copyright (C) 2016 The V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  Return false if isView is called with no arg
+info: >
+  24.1.3.1 ArrayBuffer.isView ( arg )
+
+  1. If Type(arg) is not Object, return false.
+  ...
+---*/
+
+assert.sameValue(ArrayBuffer.isView(), false);

test/built-ins/ArrayBuffer/isView/prop-desc.js

@@ -0,0 +1,17 @@
+// Copyright (C) 2016 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+
+/*---
+esid: sec-arraybuffer.isview
+description: >
+  "isView" property of ArrayBuffer
+info: >
+  ES6 section 17: Every other data property described in clauses 18 through 26
+  and in Annex B.2 has the attributes { [[Writable]]: true,
+  [[Enumerable]]: false, [[Configurable]]: true } unless otherwise specified.
+includes: [propertyHelper.js, testTypedArray.js]
+---*/
+
+verifyNotEnumerable(ArrayBuffer, "isView");
+verifyWritable(ArrayBuffer, "isView");
+verifyConfigurable(ArrayBuffer, "isView");