Add tests for DataView.prototype.buffer

test/built-ins/DataView/prototype/buffer/detached-buffer.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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: The getter method does not throw with a detached buffer
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  ...
+  5. Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
+  6. Return buffer.
+includes: [detachArrayBuffer.js]
+---*/
+
+var buffer = new ArrayBuffer(8);
+var sample = new DataView(buffer, 0);
+
+$DETACHBUFFER(sample.buffer);
+assert.sameValue(sample.buffer, buffer);

test/built-ins/DataView/prototype/buffer/invoked-as-accessor.js

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+// 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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: >
+  Requires this value to have a [[DataView]] internal slot
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  1. Let O be the this value.
+  2. If Type(O) is not Object, throw a TypeError exception.
+  3. If O does not have a [[DataView]] internal slot, throw a TypeError
+  exception.
+  ...
+---*/
+
+assert.throws(TypeError, function() {
+  DataView.prototype.buffer;
+});

test/built-ins/DataView/prototype/buffer/invoked-as-func.js

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+// 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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: Throws a TypeError exception when invoked as a function
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  1. Let O be the this value.
+  2. If Type(O) is not Object, throw a TypeError exception.
+  3. If O does not have a [[DataView]] internal slot, throw a TypeError
+  exception.
+  ...
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  DataView.prototype, 'buffer'
+).get;
+
+assert.throws(TypeError, function() {
+  getter();
+});

test/built-ins/DataView/prototype/buffer/prop-desc.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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: >
+  "buffer" property of DataView.prototype
+info: |
+  DataView.prototype.buffer is an accessor property whose set accessor function
+  is undefined.
+
+  Section 17: Every accessor property described in clauses 18 through 26 and in
+  Annex B.2 has the attributes {[[Enumerable]]: false, [[Configurable]]: true }
+includes: [propertyHelper.js]
+---*/
+
+var desc = Object.getOwnPropertyDescriptor(DataView.prototype, "buffer");
+
+assert.sameValue(desc.set, undefined);
+assert.sameValue(typeof desc.get, "function");
+
+verifyNotEnumerable(DataView.prototype, "buffer");
+verifyConfigurable(DataView.prototype, "buffer");

test/built-ins/DataView/prototype/buffer/return-buffer.js

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+// 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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: >
+  Return buffer from [[ViewedArrayBuffer]] internal slot
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  ...
+  5. Let buffer be the value of O's [[ViewedArrayBuffer]] internal slot.
+  6. Return buffer.
+---*/
+
+var buffer = new ArrayBuffer(1);
+var dv = new DataView(buffer, 0);
+
+assert.sameValue(dv.buffer, buffer);

test/built-ins/DataView/prototype/buffer/this-has-no-dataview-internal.js

@@ -0,0 +1,40 @@
+// 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-get-dataview.prototype.buffer
+description: >
+  Throws a TypeError exception when `this` does not have a [[DataView]] internal
+  slot
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  1. Let O be the this value.
+  2. If Type(O) is not Object, throw a TypeError exception.
+  3. If O does not have a [[DataView]] internal slot, throw a TypeError
+  exception.
+  ...
+features: [Int8Array]
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  DataView.prototype, "buffer"
+).get;
+
+assert.throws(TypeError, function() {
+  getter.call({});
+}, "{}");
+
+assert.throws(TypeError, function() {
+  getter.call([]);
+}, "[]");
+
+var ab = new ArrayBuffer(8);
+assert.throws(TypeError, function() {
+  getter.call(ab);
+}, "ArrayBuffer");
+
+var ta = new Int8Array();
+assert.throws(TypeError, function() {
+  getter.call(ta);
+}, "TypedArray");

test/built-ins/DataView/prototype/buffer/this-is-not-object.js

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+// 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-get-dataview.prototype.buffer
+es6id: 24.2.4.1
+description: Throws a TypeError exception when `this` is not Object
+info: |
+  24.2.4.1 get DataView.prototype.buffer
+
+  1. Let O be the this value.
+  2. If Type(O) is not Object, throw a TypeError exception.
+  ...
+features: [Symbol]
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  DataView.prototype, "buffer"
+).get;
+
+assert.throws(TypeError, function() {
+  getter.call(undefined);
+}, "this is undefined");
+
+assert.throws(TypeError, function() {
+  getter.call(null);
+}, "this is null");
+
+assert.throws(TypeError, function() {
+  getter.call(42);
+}, "this is 42");
+
+assert.throws(TypeError, function() {
+  getter.call("1");
+}, "this is a string");
+
+assert.throws(TypeError, function() {
+  getter.call(true);
+}, "this is true");
+
+assert.throws(TypeError, function() {
+  getter.call(false);
+}, "this is false");
+
+var s = Symbol("s");
+assert.throws(TypeError, function() {
+  getter.call(s);
+}, "this is a Symbol");