Add [[Get]] tests

This commit is contained in:
Alexey Shvayka 2020-03-12 15:16:18 +02:00 committed by Rick Waldron
parent 2d60dc0f65
commit 6155fcad3d
3 changed files with 125 additions and 0 deletions

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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver
description: >
If "get" trap is null or undefined, [[Get]] call is properly
forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[Get]] ( P, Receiver )
[...]
5. Let target be O.[[ProxyTarget]].
6. Let trap be ? GetMethod(handler, "get").
7. If trap is undefined, then
a. Return ? target.[[Get]](P, Receiver).
features: [Proxy, Symbol.match]
---*/
var regExp = /(?:)/i;
var regExpTarget = new Proxy(regExp, {});
var regExpProxy = new Proxy(regExpTarget, {});
assert.sameValue(Object.create(regExpProxy).lastIndex, 0);
assert.sameValue(regExpProxy[Symbol.match], RegExp.prototype[Symbol.match]);
var functionTarget = new Proxy(function(_arg) {}, {});
var functionProxy = new Proxy(functionTarget, {});
assert.sameValue(Object.create(functionProxy).length, 1);
assert.sameValue(functionProxy.__proto__, Function.prototype);

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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver
description: >
If "get" trap is null or undefined, [[Get]] call is properly
forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[Get]] ( P, Receiver )
[...]
5. Let target be O.[[ProxyTarget]].
6. Let trap be ? GetMethod(handler, "get").
7. If trap is undefined, then
a. Return ? target.[[Get]](P, Receiver).
features: [Proxy, Symbol]
---*/
var stringTarget = new Proxy(new String("str"), {});
var stringProxy = new Proxy(stringTarget, {
get: null,
});
assert.sameValue(stringProxy.length, 3);
assert.sameValue(stringProxy[0], "s");
assert.sameValue(stringProxy[4], undefined);
var sym = Symbol();
var target = new Proxy({}, {
get: function(_target, key) {
switch (key) {
case sym: return 1;
case "10": return 2;
case "foo": return 3;
}
},
});
var proxy = new Proxy(target, {
get: null,
});
assert.sameValue(proxy[sym], 1);
assert.sameValue(proxy[10], 2);
assert.sameValue(Object.create(proxy).foo, 3);
assert.sameValue(proxy.bar, undefined);

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// Copyright (C) 2020 Alexey Shvayka. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-proxy-object-internal-methods-and-internal-slots-get-p-receiver
description: >
If "get" trap is null or undefined, [[Get]] call is properly
forwarded to [[ProxyTarget]] (which is also a Proxy object).
info: |
[[Get]] ( P, Receiver )
[...]
5. Let target be O.[[ProxyTarget]].
6. Let trap be ? GetMethod(handler, "get").
7. If trap is undefined, then
a. Return ? target.[[Get]](P, Receiver).
features: [Proxy]
includes: [compareArray.js]
---*/
var plainObject = {
get 0() {
return 1;
},
foo: 2,
set bar(_value) {},
};
var plainObjectTarget = new Proxy(plainObject, {});
var plainObjectProxy = new Proxy(plainObjectTarget, {
get: undefined,
});
assert.sameValue(Object.create(plainObjectProxy)[0], 1);
assert.sameValue(plainObjectProxy.foo, 2);
assert.sameValue(plainObjectProxy.bar, undefined);
var array = [1, 2, 3];
var arrayTarget = new Proxy(array, {});
var arrayProxy = new Proxy(arrayTarget, {
get: undefined,
});
assert.compareArray(arrayProxy, array);