Proxy: set

This commit is contained in:
Leonardo Balter 2015-06-02 19:14:35 -04:00
parent 21a1fbe68e
commit 99ca320b01
17 changed files with 433 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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
11. If booleanTrapResult is false, return false.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return false;
}
};
var p = new Proxy(target, handler);
assert.sameValue(Reflect.set(p, "attr", "foo"), false);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
11. If booleanTrapResult is false, return false.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return null;
}
};
var p = new Proxy(target, handler);
assert.sameValue(Reflect.set(p, "attr", "foo"), false);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
11. If booleanTrapResult is false, return false.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return 0;
}
};
var p = new Proxy(target, handler);
assert.sameValue(Reflect.set(p, "attr", "foo"), false);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
11. If booleanTrapResult is false, return false.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return "";
}
};
var p = new Proxy(target, handler);
assert.sameValue(Reflect.set(p, "attr", "foo"), false);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
11. If booleanTrapResult is false, return false.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return undefined;
}
};
var p = new Proxy(target, handler);
assert.sameValue(Reflect.set(p, "attr", "foo"), false);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P, V,
Receiver»)).
---*/
var _target, _handler, _prop, _value, _receiver;
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
_handler = this;
_target = t;
_prop = prop;
_value = value;
_receiver = receiver;
return t[prop] = value;
}
};
var p = new Proxy(target, handler);
p.attr = "foo";
assert.sameValue(_handler, handler, "handler object as the trap context");
assert.sameValue(_target, target, "first argument is the target object");
assert.sameValue(_prop, "attr", "second argument is the property name");
assert.sameValue(_value, "foo", "third argument is the new value");
assert.sameValue(_receiver, p, "forth argument is the proxy object");

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
3. If handler is null, throw a TypeError exception.
---*/
var p = Proxy.revocable({}, {});
p.revoke();
assert.throws(TypeError, function() {
p.proxy.attr = 1;
});
assert.throws(TypeError, function() {
p.proxy['attr'] = 1;
});

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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: 9.5.9
description: >
Trap returns abrupt.
info: >
[[Set]] ( P, V, Receiver)
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P, V, Receiver»)).
10. ReturnIfAbrupt(booleanTrapResult).
...
includes: [Test262Error.js]
---*/
var p = new Proxy({}, {
set: function(t, prop, value, receiver) {
throw new Test262Error();
}
});
assert.throws(Test262Error, function() {
p.attr = "bar";
});
assert.throws(Test262Error, function() {
p["attr"] = "bar";
});

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Returns true if trap returns true and target property accessor is
configurable and set is undefined.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, "attr", {
configurable: true,
set: undefined
});
assert(Reflect.set(p, "attr", "bar"));

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Returns true if trap returns true and target property accessor is not
configurable and set is not undefined.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: false,
set: function( value ) {
return value;
}
});
assert(Reflect.set(p, "attr", 1));

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Returns true if trap returns true and target property is not configurable
but writable.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: false,
writable: true,
value: 'foo'
});
assert(Reflect.set(p, "attr", 1));

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Returns true if trap returns true and target property is configurable
but not writable.
features: [Reflect]
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, "attr", {
configurable: true,
writable: false,
value: "foo"
});
assert(Reflect.set(p, "attr", "foo"));

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Throws a TypeError when target property is an accessor not configurable and
and set is undefined.
info: >
14. If targetDesc is not undefined, then
b. If IsAccessorDescriptor(targetDesc) and targetDesc.[[Configurable]] is false, then
i. If targetDesc.[[Set]] is undefined, throw a TypeError exception.
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: false,
set: undefined
});
assert.throws(TypeError, function() {
p.attr = 'bar';
});
assert.throws(TypeError, function() {
p['attr'] = 'bar';
});

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
Throws a TypeError when target property is not configurable neither writable
and its value is not strictly equal to V.
info: >
14. If targetDesc is not undefined, then
a. If IsDataDescriptor(targetDesc) and targetDesc.[[Configurable]] is
false and targetDesc.[[Writable]] is false, then
i. If SameValue(V, targetDesc.[[Value]]) is false, throw a TypeError
exception.
---*/
var target = {};
var handler = {
set: function(t, prop, value, receiver) {
return true;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: false,
writable: false,
value: 'foo'
});
assert.throws(TypeError, function() {
p.attr = 'bar';
});
assert.throws(TypeError, function() {
p['attr'] = 'bar';
});

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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: 9.5.9
description: >
Trap is not callable.
info: >
[[Set]] ( P, V, Receiver)
6. Let trap be GetMethod(handler, "set").
...
7.3.9 GetMethod (O, P)
5. If IsCallable(func) is false, throw a TypeError exception.
---*/
var p = new Proxy({}, {
set: {}
});
assert.throws(TypeError, function() {
p.attr = 1;
});
assert.throws(TypeError, function() {
p["attr"] = 1;
});

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
8. If trap is undefined, then return target.[[Set]](P, V, Receiver).
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {});
p.attr = 2;
assert.sameValue(target.attr, 2);

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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: 9.5.9
description: >
[[Set]] ( P, V, Receiver)
8. If trap is undefined, then return target.[[Set]](P, V, Receiver).
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
get: undefined
});
p.attr = 1;
assert.sameValue(target.attr, 1);