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Proxy: has

This commit is contained in:
Leonardo Balter 2015-06-02 19:14:06 -04:00
parent b2d4bcfd0e
commit 54e82687d7
20 changed files with 559 additions and 0 deletions
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32
test/built-ins/Proxy/has/call-in.js Normal file
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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: 9.5.7
description: >
A `in` check trigger trap.call(handler, target, P);
info: >
[[HasProperty]] (P)
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
...
---*/
var _handler, _target, _prop;
var target = {};
var handler = {
has: function(t, prop) {
_handler = this;
_target = t;
_prop = prop;
return prop in t;
}
};
var p = new Proxy(target, handler);
"attr" in p;
assert.sameValue(_handler, handler, "handler is context");
assert.sameValue(_target, target, "target is the first parameter");
assert.sameValue(_prop, "attr", "given prop is the second paramter");

37
test/built-ins/Proxy/has/call-object-create.js Normal file
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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: 9.5.7
description: >
`.. in Object.create(proxy)` triggers trap.call(handler, target, P);
info: >
[[HasProperty]] (P)
...
2. Let handler be the value of the [[ProxyHandler]] internal slot of O.
...
5. Let target be the value of the [[ProxyTarget]] internal slot of O.
6. Let trap be GetMethod(handler, "has").
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
...
---*/
var _handler, _target, _prop;
var target = {};
var handler = {
has: function(t, prop) {
_handler = this;
_target = t;
_prop = prop;
return false;
}
};
var p = new Proxy(target, handler);
"attr" in Object.create(p);
assert.sameValue(_handler, handler, "handler is context");
assert.sameValue(_target, target, "target is the first parameter");
assert.sameValue(_prop, "attr", "given prop is the second paramter");

35
test/built-ins/Proxy/has/call-with.js Normal file
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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: 9.5.7
description: >
A `with` variable check trigger trap.call(handler, target, P);
info: >
[[HasProperty]] (P)
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
...
flags: [noStrict]
---*/
var _handler, _target, _prop;
var target = {};
var handler = {
has: function(t, prop) {
_handler = this;
_target = t;
_prop = prop;
return true;
}
};
var p = new Proxy(target, handler);
with (p) {
(attr);
}
assert.sameValue(_handler, handler);
assert.sameValue(_target, target);
assert.sameValue(_prop, "attr");

18
test/built-ins/Proxy/has/null-handler-using-with.js Normal file
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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: 9.5.7
description: >
Throws a TypeError exception if handler is null.
flags: [noStrict]
---*/
var p = Proxy.revocable({}, {});
p.revoke();
assert.throws(TypeError, function() {
with (p.proxy) {
(attr);
}
});

15
test/built-ins/Proxy/has/null-handler.js Normal file
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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: 9.5.7
description: >
Throws a TypeError exception if handler is null.
---*/
var p = Proxy.revocable({}, {});
p.revoke();
assert.throws(TypeError, function() {
"attr" in p.proxy;
});

43
test/built-ins/Proxy/has/return-false-target-not-extensible-using-with.js Normal file
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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: 9.5.7
description: >
A property cannot be reported as non-existent, if it exists as an own
property of the target object and the target object is not extensible.
info: >
[[HasProperty]] (P)
...
11. If booleanTrapResult is false, then
a. Let targetDesc be target.[[GetOwnProperty]](P).
b. ReturnIfAbrupt(targetDesc).
c. If targetDesc is not undefined, then
...
ii. Let extensibleTarget be IsExtensible(target).
...
iv. If extensibleTarget is false, throw a TypeError exception.
...
flags: [noStrict]
---*/
var target = {};
var handler = {
has: function(t, prop) {
return 0;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, 'attr', {
configurable: true,
value: 1
});
Object.preventExtensions(target);
assert.throws(TypeError, function() {
with (p) {
(attr);
}
});

40
test/built-ins/Proxy/has/return-false-target-not-extensible.js Normal file
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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: 9.5.7
description: >
A property cannot be reported as non-existent, if it exists as an own
property of the target object and the target object is not extensible.
info: >
[[HasProperty]] (P)
...
11. If booleanTrapResult is false, then
a. Let targetDesc be target.[[GetOwnProperty]](P).
b. ReturnIfAbrupt(targetDesc).
c. If targetDesc is not undefined, then
...
ii. Let extensibleTarget be IsExtensible(target).
...
iv. If extensibleTarget is false, throw a TypeError exception.
...
---*/
var target = {};
var handler = {
has: function(t, prop) {
return 0;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, "attr", {
configurable: true,
value: 1
});
Object.preventExtensions(target);
assert.throws(TypeError, function() {
"attr" in p;
});

28
test/built-ins/Proxy/has/return-false-target-prop-exists-using-with.js Normal file
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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: 9.5.7
description: >
The result of [[HasProperty]] is a Boolean value and will affect has
checkings. False returned when target property exists;
info: >
[[HasProperty]] (P)
...
12. Return booleanTrapResult.
flags: [noStrict]
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
has: function(t, prop) {
return false;
}
});
var attr = 0;
with (p) {
assert.sameValue(attr, 0);
}

24
test/built-ins/Proxy/has/return-false-target-prop-exists.js Normal file
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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: 9.5.7
description: >
The result of [[HasProperty]] is a Boolean value and will affect has
checkings. False returned when target property exists;
info: >
[[HasProperty]] (P)
...
12. Return booleanTrapResult.
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
has: function(t, prop) {
return false;
}
});
assert.sameValue(("attr" in p), false);

38
test/built-ins/Proxy/has/return-false-targetdesc-not-configurable-using-with.js Normal file
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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: 9.5.7
description: >
A property cannot be reported as non-existent, if it exists as a
non-configurable own property of the target object.
info: >
[[HasProperty]] (P)
...
11. If booleanTrapResult is false, then
...
c. If targetDesc is not undefined, then
i. If targetDesc.[[Configurable]] is false, throw a TypeError
exception.
...
flags: [noStrict]
---*/
var target = {};
var handler = {
has: function(t, prop) {
return 0;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, "attr", {
configurable: false,
value: 1
});
assert.throws(TypeError, function() {
with (p) {
(attr);
}
});

35
test/built-ins/Proxy/has/return-false-targetdesc-not-configurable.js Normal file
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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: 9.5.7
description: >
A property cannot be reported as non-existent, if it exists as a
non-configurable own property of the target object.
info: >
[[HasProperty]] (P)
...
11. If booleanTrapResult is false, then
...
c. If targetDesc is not undefined, then
i. If targetDesc.[[Configurable]] is false, throw a TypeError
exception.
...
---*/
var target = {};
var handler = {
has: function(t, prop) {
return 0;
}
};
var p = new Proxy(target, handler);
Object.defineProperty(target, "attr", {
configurable: false,
value: 1
});
assert.throws(TypeError, function() {
"attr" in p;
});

25
test/built-ins/Proxy/has/return-is-abrupt-in.js Normal file
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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: 9.5.7
description: >
Trap returns abrupt. Using `prop in obj`.
info: >
[[HasProperty]] (P)
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
10. ReturnIfAbrupt(booleanTrapResult).
...
includes: [Test262Error.js]
---*/
var p = new Proxy({}, {
has: function() {
throw new Test262Error();
}
});
assert.throws(Test262Error, function() {
"attr" in p;
});

28
test/built-ins/Proxy/has/return-is-abrupt-with.js Normal file
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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: 9.5.7
description: >
Trap returns abrupt. Using `with`.
info: >
[[HasProperty]] (P)
...
9. Let booleanTrapResult be ToBoolean(Call(trap, handler, «target, P»)).
10. ReturnIfAbrupt(booleanTrapResult).
...
flags: [noStrict]
includes: [Test262Error.js]
---*/
var p = new Proxy({}, {
has: function() {
throw new Test262Error();
}
});
assert.throws(Test262Error, function() {
with (p) {
(attr);
}
});

25
test/built-ins/Proxy/has/return-true-target-prop-exists-using-with.js Normal file
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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: 9.5.7
description: >
The result of [[HasProperty]] is a Boolean value and will affect has
checkings. True returned when target property exists;
flags: [noStrict]
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
has: function(t, prop) {
if (prop !== "assert") {
return 42;
}
}
});
var attr = 0;
with (p) {
assert.sameValue(attr, 1);
}

19
test/built-ins/Proxy/has/return-true-target-prop-exists.js Normal file
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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: 9.5.7
description: >
The result of [[HasProperty]] is a Boolean value and will affect has
checkings. True returned when target property exists;
---*/
var target = {
attr: 1
};
var p = new Proxy(target, {
has: function(t, prop) {
return 1;
}
});
assert.sameValue(("attr" in p), true);

16
test/built-ins/Proxy/has/return-true-without-same-target-prop.js Normal file
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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: 9.5.7
description: >
The result of [[HasProperty]] is a Boolean value and will affect has
checkings. True returned when target property doesn't exists;
---*/
var p = new Proxy({}, {
has: function(t, prop) {
return true;
}
});
assert.sameValue(("attr" in p), true);

30
test/built-ins/Proxy/has/trap-is-not-callable-using-with.js Normal file
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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: 9.5.7
description: >
Throws a TypeError exception if trap is not callable.
info: >
[[HasProperty]] (P)
...
6. Let trap be GetMethod(handler, "has").
...
7.3.9 GetMethod (O, P)
...
2. Let func be GetV(O, P).
5. If IsCallable(func) is false, throw a TypeError exception.
...
flags: [noStrict]
---*/
var target = {};
var p = new Proxy(target, {
has: {}
});
assert.throws(TypeError, function() {
with (p) {
(attr);
}
});

27
test/built-ins/Proxy/has/trap-is-not-callable.js Normal file
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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: 9.5.7
description: >
Throws a TypeError exception if trap is not callable.
info: >
[[HasProperty]] (P)
...
6. Let trap be GetMethod(handler, "has").
...
7.3.9 GetMethod (O, P)
...
2. Let func be GetV(O, P).
5. If IsCallable(func) is false, throw a TypeError exception.
...
---*/
var target = {};
var p = new Proxy(target, {
has: {}
});
assert.throws(TypeError, function() {
"attr" in p;
});

24
test/built-ins/Proxy/has/trap-is-undefined-using-with.js Normal file
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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: 9.5.7
description: >
Return target.[[HasProperty]](P) if trap is undefined.
info: >
[[HasProperty]] (P)
...
8. If trap is undefined, then
a. Return target.[[HasProperty]](P).
...
flags: [noStrict]
---*/
var target = Object.create(Array.prototype);
var p = new Proxy(target, {});
var foo = 3;
with (target) {
assert.sameValue(length, 0);
assert.sameValue(foo, 3);
}

20
test/built-ins/Proxy/has/trap-is-undefined.js Normal file
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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: 9.5.7
description: >
Return target.[[HasProperty]](P) if trap is undefined.
info: >
[[HasProperty]] (P)
...
8. If trap is undefined, then
a. Return target.[[HasProperty]](P).
...
---*/
var target = Object.create(Array.prototype);
var p = new Proxy(target, {});
assert.sameValue(("foo" in p), false);
assert.sameValue(("length" in p), true);