ArrayBuffer.prototype.detached tests

See https://tc39.es/proposal-arraybuffer-transfer/

test/built-ins/ArrayBuffer/prototype/detached/detached-buffer-resizable.js

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+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Return a boolean indicating if the ArrayBuffer is detached
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+  4. Return IsDetachedBuffer(O).
+includes: [detachArrayBuffer.js]
+features: [ArrayBuffer, arraybuffer-transfer, resizable-arraybuffer]
+---*/
+
+var ab1 = new ArrayBuffer(0, { maxByteLength: 0 });
+assert.sameValue(ab1.detached, false, 'Resizable ArrayBuffer with maxByteLength of 0 is not detached');
+
+$DETACHBUFFER(ab1);
+
+assert.sameValue(ab1.detached, true, 'Resizable ArrayBuffer with maxByteLength of 0 is now detached');
+
+var ab2 = new ArrayBuffer(0, { maxByteLength: 23 });
+assert.sameValue(ab2.detached, false, 'Resizable ArrayBuffer with maxByteLength of 23 is not detached');
+
+$DETACHBUFFER(ab2);
+
+assert.sameValue(ab2.detached, true, 'Resizable ArrayBuffer with maxByteLength of 23 is now detached');
+
+var ab3 = new ArrayBuffer(42, { maxByteLength: 42 });
+assert.sameValue(ab3.detached, false, 'Resizable ArrayBuffer with maxByteLength of 42 is not detached');
+
+$DETACHBUFFER(ab3);
+
+assert.sameValue(ab3.detached, true, 'Resizable ArrayBuffer with maxByteLength of 42 is now detached');

test/built-ins/ArrayBuffer/prototype/detached/detached-buffer.js

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+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Returns true if the buffer is detached, else false
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+  4. Return IsDetachedBuffer(O).
+
+includes: [detachArrayBuffer.js]
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var ab = new ArrayBuffer(1);
+
+assert.sameValue(ab.detached, false);
+
+$DETACHBUFFER(ab);
+
+assert.sameValue(ab.detached, true);

test/built-ins/ArrayBuffer/prototype/detached/invoked-as-accessor.js

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+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Returns true if the buffer is detached, else false
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+  4. Return IsDetachedBuffer(O).
+
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+assert.throws(TypeError, function() {
+  ArrayBuffer.prototype.detached;
+});

test/built-ins/ArrayBuffer/prototype/detached/invoked-as-func.js

@@ -0,0 +1,24 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Returns true if the buffer is detached, else false
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  [...]
+
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  ArrayBuffer.prototype, 'detached'
+).get;
+
+assert.sameValue(typeof getter, 'function');
+
+assert.throws(TypeError, function() {
+  getter();
+});

test/built-ins/ArrayBuffer/prototype/detached/length.js

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+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: >
+  get ArrayBuffer.prototype.detached.length is 0.
+info: |
+  get ArrayBuffer.prototype.detached
+
+  17 ECMAScript Standard Built-in Objects:
+    Every built-in Function object, including constructors, has a length
+    property whose value is an integer. Unless otherwise specified, this
+    value is equal to the largest number of named arguments shown in the
+    subclause headings for the function description, including optional
+    parameters. However, rest parameters shown using the form “...name”
+    are not included in the default argument count.
+
+    Unless otherwise specified, the length property of a built-in Function
+    object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+    [[Configurable]]: true }.
+
+includes: [propertyHelper.js]
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var desc = Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, 'detached');
+
+verifyProperty(desc.get, 'length', {
+  value: 0,
+  enumerable: false,
+  writable: false,
+  configurable: true
+});

test/built-ins/ArrayBuffer/prototype/detached/name.js

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+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: >
+  get ArrayBuffer.prototype.detached
+
+  17 ECMAScript Standard Built-in Objects
+
+  Functions that are specified as get or set accessor functions of built-in
+  properties have "get " or "set " prepended to the property name string.
+
+includes: [propertyHelper.js]
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var desc = Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, 'detached');
+
+verifyProperty(desc.get, 'name', {
+  value: 'get detached',
+  enumerable: false,
+  writable: false,
+  configurable: true
+});

test/built-ins/ArrayBuffer/prototype/detached/prop-desc.js

@@ -0,0 +1,25 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: >
+  "detached" property of ArrayBuffer.prototype
+info: |
+  ArrayBuffer.prototype.detached 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]
+features: [ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var desc = Object.getOwnPropertyDescriptor(ArrayBuffer.prototype, 'detached');
+
+assert.sameValue(desc.set, undefined);
+assert.sameValue(typeof desc.get, 'function');
+
+verifyProperty(ArrayBuffer.prototype, 'detached', {
+  enumerable: false,
+  configurable: true
+});

test/built-ins/ArrayBuffer/prototype/detached/this-has-no-arraybufferdata-internal.js

@@ -0,0 +1,39 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: >
+  Throws a TypeError exception when `this` does not have a [[ArrayBufferData]]
+  internal slot
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  [...]
+features: [DataView, Int8Array, ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  ArrayBuffer.prototype, "detached"
+).get;
+
+assert.sameValue(typeof getter, "function");
+
+assert.throws(TypeError, function() {
+  getter.call({});
+});
+
+assert.throws(TypeError, function() {
+  getter.call([]);
+});
+
+var ta = new Int8Array(8);
+assert.throws(TypeError, function() {
+  getter.call(ta);
+});
+
+var dv = new DataView(new ArrayBuffer(8), 0);
+assert.throws(TypeError, function() {
+  getter.call(dv);
+});

test/built-ins/ArrayBuffer/prototype/detached/this-is-not-object.js

@@ -0,0 +1,48 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Throws a TypeError exception when `this` is not Object
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  [...]
+features: [Symbol, ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var getter = Object.getOwnPropertyDescriptor(
+  ArrayBuffer.prototype, "detached"
+).get;
+
+assert.sameValue(typeof getter, "function");
+
+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");

test/built-ins/ArrayBuffer/prototype/detached/this-is-sharedarraybuffer-resizable.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Throws a TypeError exception when `this` is a resizable SharedArrayBuffer
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+  [...]
+features: [SharedArrayBuffer, resizable-arraybuffer, ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var detached = Object.getOwnPropertyDescriptor(
+  ArrayBuffer.prototype, "detached"
+);
+
+var getter = detached.get;
+var sab = new SharedArrayBuffer(4);
+
+assert.sameValue(typeof getter, "function");
+
+assert.throws(TypeError, function() {
+  getter.call(sab);
+}, "`this` cannot be a SharedArrayBuffer");

test/built-ins/ArrayBuffer/prototype/detached/this-is-sharedarraybuffer.js

@@ -0,0 +1,27 @@
+// Copyright (C) 2023 Jordan Harband. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+esid: sec-get-arraybuffer.prototype.detached
+description: Throws a TypeError exception when `this` is a SharedArrayBuffer
+info: |
+  get ArrayBuffer.prototype.detached
+
+  1. Let O be the this value.
+  2. Perform ? RequireInternalSlot(O, [[ArrayBufferData]]).
+  3. If IsSharedArrayBuffer(O) is true, throw a TypeError exception.
+  [...]
+features: [SharedArrayBuffer, ArrayBuffer, arraybuffer-transfer]
+---*/
+
+var detached = Object.getOwnPropertyDescriptor(
+  ArrayBuffer.prototype, "detached"
+);
+
+var getter = detached.get;
+var sab = new SharedArrayBuffer(4);
+
+assert.sameValue(typeof getter, "function");
+
+assert.throws(TypeError, function() {
+  getter.call(sab);
+}, "`this` cannot be a SharedArrayBuffer");