Merge pull request #328 from bocoup/object-set-prototype-of

Add tests for Object.setPrototypeOf

test/built-ins/Object/setPrototypeOf/length.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf '`length` property'
+info: >
+    ES6 Section 17:
+    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.
+
+    [...]
+
+    Unless otherwise specified, the length property of a built-in Function
+    object has the attributes { [[Writable]]: false, [[Enumerable]]: false,
+    [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Object.setPrototypeOf.length,
+  2,
+  'The value of `Object.setPrototypeOf.length` is `2`'
+);
+
+verifyNotEnumerable(Object.setPrototypeOf, 'length');
+verifyNotWritable(Object.setPrototypeOf, 'length');
+verifyConfigurable(Object.setPrototypeOf, 'length');

test/built-ins/Object/setPrototypeOf/name.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf '`name` property'
+info: >
+    ES6 Section 17:
+
+    Every built-in Function object, including constructors, that is not
+    identified as an anonymous function has a name property whose value is a
+    String. Unless otherwise specified, this value is the name that is given to
+    the function in this specification.
+
+    [...]
+
+    Unless otherwise specified, the name property of a built-in Function
+    object, if it exists, has the attributes { [[Writable]]: false,
+    [[Enumerable]]: false, [[Configurable]]: true }.
+includes: [propertyHelper.js]
+---*/
+
+assert.sameValue(
+  Object.setPrototypeOf.name,
+  'setPrototypeOf',
+  'The value of `Object.setPrototypeOf.name` is `"setPrototypeOf"`'
+);
+
+verifyNotEnumerable(Object.setPrototypeOf, 'name');
+verifyNotWritable(Object.setPrototypeOf, 'name');
+verifyConfigurable(Object.setPrototypeOf, 'name');
+

test/built-ins/Object/setPrototypeOf/o-not-obj-coercible.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf invoked with a non-object-coercible value
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+---*/
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf(null);
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf(undefined);
+});

test/built-ins/Object/setPrototypeOf/o-not-obj.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf invoked with a non-object value
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+    4. If Type(O) is not Object, return O.
+features: [Symbol]
+---*/
+
+var symbol;
+
+assert.sameValue(Object.setPrototypeOf(true, null), true);
+assert.sameValue(Object.setPrototypeOf(3, null), 3);
+assert.sameValue(Object.setPrototypeOf('string', null), 'string');
+
+symbol = Symbol('s');
+assert.sameValue(Object.setPrototypeOf(symbol, null), symbol);

test/built-ins/Object/setPrototypeOf/property-descriptor.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf property descriptor
+info: >
+    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]
+---*/
+
+assert.sameValue(typeof Object.setPrototypeOf, 'function');
+
+verifyNotEnumerable(Object, 'setPrototypeOf');
+verifyWritable(Object, 'setPrototypeOf');
+verifyConfigurable(Object, 'setPrototypeOf');

test/built-ins/Object/setPrototypeOf/proto-not-obj.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf invoked with an invalid prototype value
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+features: [Symbol]
+---*/
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({});
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({}, undefined);
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({}, true);
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({}, 1);
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({}, 'string');
+});
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf({}, Symbol('s'));
+});

test/built-ins/Object/setPrototypeOf/set-error.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: >
+    Object.setPrototypeOf invoked with an object whose prototype cannot be set
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+    4. If Type(O) is not Object, return O.
+    5. Let status be O.[[SetPrototypeOf]](proto).
+    6. ReturnIfAbrupt(status).
+features: [Proxy]
+---*/
+
+var obj = new Proxy({}, {
+  setPrototypeOf: function() {
+    throw new Test262Error();
+  }
+});
+
+assert.throws(Test262Error, function() {
+  Object.setPrototypeOf(obj, null);
+});

test/built-ins/Object/setPrototypeOf/set-failure-cycle.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: >
+    Object.setPrototypeOf invoked with a value that would create a cycle
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+    4. If Type(O) is not Object, return O.
+    5. Let status be O.[[SetPrototypeOf]](proto).
+    6. ReturnIfAbrupt(status).
+    7. If status is false, throw a TypeError exception.
+---*/
+
+var obj = {};
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf(Object.prototype, Array.prototype);
+});

test/built-ins/Object/setPrototypeOf/set-failure-non-extensible.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf invoked with a non-extensible object
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+    4. If Type(O) is not Object, return O.
+    5. Let status be O.[[SetPrototypeOf]](proto).
+    6. ReturnIfAbrupt(status).
+    7. If status is false, throw a TypeError exception.
+---*/
+
+var obj = {};
+
+Object.preventExtensions(obj);
+
+assert.throws(TypeError, function() {
+  Object.setPrototypeOf(obj, null);
+});

test/built-ins/Object/setPrototypeOf/success.js

+// Copyright (C) 2015 the V8 project authors. All rights reserved.
+// This code is governed by the BSD license found in the LICENSE file.
+/*---
+es6id: 19.1.2.18
+description: Object.setPrototypeOf invoked with a non-extensible object
+info: >
+    1. Let O be RequireObjectCoercible(O).
+    2. ReturnIfAbrupt(O).
+    3. If Type(proto) is neither Object nor Null, throw a TypeError exception.
+    4. If Type(O) is not Object, return O.
+    5. Let status be O.[[SetPrototypeOf]](proto).
+    6. ReturnIfAbrupt(status).
+    7. If status is false, throw a TypeError exception.
+    8. Return O.
+---*/
+
+var propValue = {};
+var newProto = {
+  test262prop: propValue
+};
+var obj = {};
+var result;
+
+result = Object.setPrototypeOf(obj, newProto);
+
+assert.sameValue(result, obj, 'Return value');
+assert.sameValue(Object.hasOwnProperty.call(obj, 'test262prop'), false);
+assert.sameValue(obj.test262prop, propValue);