Add tests for Reflect.get

This commit is contained in:
Leonardo Balter 2015-07-29 16:21:33 -04:00
parent 6326408215
commit efac2336c2
10 changed files with 303 additions and 0 deletions

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Reflect.get is configurable, writable and not enumerable.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
---*/
verifyNotEnumerable(Reflect, 'get');
verifyWritable(Reflect, 'get');
verifyConfigurable(Reflect, 'get');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Reflect.get.length value and property descriptor
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
The length property of the get function is 2.
includes: [propertyHelper.js]
---*/
assert.sameValue(
Reflect.get.length, 2,
'The value of `Reflect.get.length` is `2`'
);
verifyNotEnumerable(Reflect.get, 'length');
verifyNotWritable(Reflect.get, 'length');
verifyConfigurable(Reflect.get, 'length');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Reflect.get.name value and property descriptor
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
17 ECMAScript Standard Built-in Objects
includes: [propertyHelper.js]
---*/
assert.sameValue(
Reflect.get.name, 'get',
'The value of `Reflect.get.name` is `"get"`'
);
verifyNotEnumerable(Reflect.get, 'name');
verifyNotWritable(Reflect.get, 'name');
verifyConfigurable(Reflect.get, 'name');

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Return abrupt from ToPropertyKey(propertyKey)
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
...
2. Let key be ToPropertyKey(propertyKey).
3. ReturnIfAbrupt(key).
...
---*/
var p = {
toString: function() {
throw new Test262Error();
}
};
assert.throws(Test262Error, function() {
Reflect.get({}, p);
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Return abrupt result from get a property value.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
...
5. Return target.[[Get]](key, receiver).
---*/
var o1 = {};
Object.defineProperty(o1, 'p1', {
get: function() {
throw new Test262Error();
}
});
assert.throws(Test262Error, function() {
Reflect.get(o1, 'p1');
});
// Abrupt from the prototype property
var o2 = Object.create(o1);
assert.throws(Test262Error, function() {
Reflect.get(o2, 'p1');
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Return value from a receiver.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
...
4. If receiver is not present, then
a. Let receiver be target.
5. Return target.[[Get]](key, receiver).
9.1.8 [[Get]] (P, Receiver)
...
2. Let desc be O.[[GetOwnProperty]](P).
3. ReturnIfAbrupt(desc).
4. If desc is undefined, then
a. Let parent be O.[[GetPrototypeOf]]().
b. ReturnIfAbrupt(parent).
c. If parent is null, return undefined.
d. Return parent.[[Get]](P, Receiver).
5. If IsDataDescriptor(desc) is true, return desc.[[Value]].
6. Otherwise, IsAccessorDescriptor(desc) must be true so, let getter be
desc.[[Get]].
7. If getter is undefined, return undefined.
8. Return Call(getter, Receiver).
---*/
var o1 = {};
var receiver = {
y: 42
};
Object.defineProperty(o1, 'x', {
get: function() {
return this.y;
}
});
assert.sameValue(
Reflect.get(o1, 'x', receiver), 42,
'Return own property value using a receiver'
);
var o2 = Object.create(o1);
assert.sameValue(
Reflect.get(o2, 'x', receiver), 42,
'Return prototype property value using a receiver'
);

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Return value where property key is a symbol.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
...
2. Let key be ToPropertyKey(propertyKey).
...
7.1.14 ToPropertyKey ( argument )
...
3. If Type(key) is Symbol, then
a. Return key.
...
features: [Symbol]
---*/
var o = {};
var s = Symbol('1');
o[s] = 42;
assert.sameValue(Reflect.get(o, s), 42);

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Return value.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
...
4. If receiver is not present, then
a. Let receiver be target.
5. Return target.[[Get]](key, receiver).
9.1.8 [[Get]] (P, Receiver)
...
2. Let desc be O.[[GetOwnProperty]](P).
3. ReturnIfAbrupt(desc).
4. If desc is undefined, then
a. Let parent be O.[[GetPrototypeOf]]().
b. ReturnIfAbrupt(parent).
c. If parent is null, return undefined.
d. Return parent.[[Get]](P, Receiver).
5. If IsDataDescriptor(desc) is true, return desc.[[Value]].
6. Otherwise, IsAccessorDescriptor(desc) must be true so, let getter be
desc.[[Get]].
7. If getter is undefined, return undefined.
8. Return Call(getter, Receiver).
---*/
var o = {};
o.p1 = 'value 1';
assert.sameValue(
Reflect.get(o, 'p1'), 'value 1',
'Return value from data descriptor'
);
Object.defineProperty(o, 'p2', {
get: undefined
});
assert.sameValue(
Reflect.get(o, 'p2'), undefined,
'Return undefined if getter is undefined'
);
Object.defineProperty(o, 'p3', {
get: function() {
return 'foo';
}
});
assert.sameValue(
Reflect.get(o, 'p3'), 'foo',
'Return Call(getter, Receiver)'
);
var o2 = Object.create({p: 42});
assert.sameValue(
Reflect.get(o2, 'p'), 42,
'Return value from prototype without own property.'
);
assert.sameValue(
Reflect.get(o2, 'u'), undefined,
'Return undefined without property on the object and its prototype'
);

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Throws a TypeError if target is not an Object.
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
1. If Type(target) is not Object, throw a TypeError exception.
...
---*/
assert.throws(TypeError, function() {
Reflect.get(1, 'p');
});
assert.throws(TypeError, function() {
Reflect.get(null, 'p');
});
assert.throws(TypeError, function() {
Reflect.get(undefined, 'p');
});
assert.throws(TypeError, function() {
Reflect.get('', 'p');
});

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// Copyright (C) 2015 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
es6id: 26.1.6
description: >
Throws a TypeError if target is a Symbol
info: >
26.1.6 Reflect.get ( target, propertyKey [ , receiver ])
1. If Type(target) is not Object, throw a TypeError exception.
...
features: [Symbol]
---*/
assert.throws(TypeError, function() {
Reflect.get(Symbol(1), 'p');
});