Merge pull request #282 from bocoup/Proxy

Add tests for Proxy

test/built-ins/Proxy/enumerate/call-parameters.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: 9.5.11
+description: >
+    Trap called as trap.call(handler, target)
+info: >
+    [[Enumerate]] ()
+
+    8. Let trapResult be Call(trap, handler, «target»).
+---*/
+
+var x, _target, _handler;
+var target = {
+    attr: 1
+};
+var handler = {
+    enumerate: function(t) {
+        _target = t;
+        _handler = this;
+    }
+};
+var p = new Proxy(target, handler);
+
+try {
+    for (x in p) {}
+} catch(e) {}
+
+assert.sameValue(_handler, handler);
+assert.sameValue(_target, target);

test/built-ins/Proxy/enumerate/null-handler.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    2. If handler is null, throw a TypeError exception.
+---*/
+
+var x;
+var p = Proxy.revocable({}, {});
+
+p.revoke();
+
+assert.throws(TypeError, function() {
+    for (x in p.proxy) {
+        x;
+    }
+});

test/built-ins/Proxy/enumerate/result-not-an-object-throws-boolean.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    The result must be an Object
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {
+    enumerate: function() {
+        return true;
+    }
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/result-not-an-object-throws-number.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    The result must be an Object
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {
+    enumerate: function() {
+        return 1;
+    }
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/result-not-an-object-throws-string.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    The result must be an Object
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {
+    enumerate: function() {
+        return "";
+    }
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/result-not-an-object-throws-symbol.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    The result must be an Object
+features: [Symbol]
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {
+    enumerate: function() {
+        return Symbol();
+    }
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/result-not-an-object-throws-undefined.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    The result must be an Object
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {
+    enumerate: function() {
+        return undefined;
+    }
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/return-is-abrupt.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: 9.5.11
+description: >
+    Trap returns abrupt.
+info: >
+    [[Enumerate]] ()
+
+    8. Let trapResult be Call(trap, handler, «target»).
+    9. ReturnIfAbrupt(trapResult).
+includes: [Test262Error.js]
+---*/
+
+var x;
+var p = new Proxy({}, {
+    enumerate: function(t) {
+        throw new Test262Error();
+    }
+});
+
+assert.throws(Test262Error, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/return-trap-result-no-value.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: 9.5.11
+description: >
+    Trap returns an iterator whose IteratorResult does not contain a value
+    property.
+info: >
+    [[Enumerate]] ()
+
+    11. Return trapResult
+---*/
+
+var x;
+var p = new Proxy([1,2,3], {
+    enumerate: function(t) {
+        return {next: function() { return { done:true }; } };
+    }
+});
+
+for (x in p) {
+    $ERROR("returned iterable interface from trap is flagged as done.");
+}

test/built-ins/Proxy/enumerate/return-trap-result.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: 9.5.11
+description: >
+    Trap returns a iterable result.
+info: >
+    [[Enumerate]] ()
+
+    11. Return trapResult
+includes: [compareArray.js]
+---*/
+
+var x;
+var iter = [
+    {done: false, value: 1},
+    {done: false, value: 2},
+    {done: false, value: 3},
+    {done: true, value: 42}
+];
+var target = {
+    attr: 1
+};
+var foo = { bar: 1 };
+var p = new Proxy(target, {
+    enumerate: function() {
+        return { next: function() { return iter.shift(); } };
+    }
+});
+
+var results = [];
+for (x in p) {
+    results.push(x);
+}
+
+assert(compareArray(results, [1,2,3]));

test/built-ins/Proxy/enumerate/trap-is-not-callable.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: 9.5.11
+description: >
+    Trap is not callable.
+info: >
+    [[Enumerate]] ()
+
+    5. Let trap be GetMethod(handler, "enumerate").
+    ...
+
+    7.3.9 GetMethod (O, P)
+
+    5. If IsCallable(func) is false, throw a TypeError exception.
+---*/
+
+var x;
+var p = new Proxy({attr:1}, {
+    enumerate: {}
+});
+
+assert.throws(TypeError, function() {
+    for (x in p) {}
+});

test/built-ins/Proxy/enumerate/trap-is-undefined.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: 9.5.11
+description: >
+    [[Enumerate]] ()
+
+    7. If trap is undefined, then Return target.[[Enumerate]]().
+---*/
+
+var x;
+var target = {
+    attr: 1
+};
+var p = new Proxy(target, {});
+
+var count = 0;
+for (x in p) {
+    count++;
+}
+
+assert.sameValue(count, 1);

test/built-ins/Proxy/function-prototype.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: 26.2.2
+description: >
+    The value of the [[Prototype]] internal slot of the Proxy
+    constructor is the intrinsic object %FunctionPrototype% (19.2.3).
+---*/
+
+assert.sameValue(
+    Object.getPrototypeOf(Proxy),
+    Function.prototype,
+    "`Object.getPrototypeOf(Proxy)` returns `Function.prototype`"
+);

test/built-ins/Proxy/get/accessor-get-is-undefined-throws.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: 9.5.8
+description: >
+    [[Get]] (P, Receiver)
+
+    if trap result is not undefined, then proxy must report the same value for a
+    non-configurable accessor property with an undefined get.
+info: >
+    13. If targetDesc is not undefined, then
+        b. If IsAccessorDescriptor(targetDesc) and targetDesc.[[Configurable]]
+        is false and targetDesc.[[Get]] is undefined, then
+            i. If trapResult is not undefined, throw a TypeError exception.
+
+---*/
+
+var target = {};
+var p = new Proxy(target, {
+    get: function() {
+        return 2;
+    }
+});
+
+Object.defineProperty(target, 'attr', {
+    configurable: false,
+    get: undefined
+});
+
+assert.throws(TypeError, function() {
+    p.attr;
+});
+
+assert.throws(TypeError, function() {
+    p['attr'];
+});

test/built-ins/Proxy/get/call-parameters.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: 9.5.8
+description: >
+    [[Get]] (P, Receiver)
+
+    9. Let trapResult be Call(trap, handler, «target, P, Receiver»).
+info: >
+    6.1.7.2 Object Internal Methods and Internal Slots
+
+    (...) Receiver is used as the this value when evaluating the code
+---*/
+
+var _target, _handler, _prop, _receiver;
+var target = {
+    attr: 1
+};
+var handler = {
+    get: function(t, prop, receiver) {
+        _handler = this;
+        _target = t;
+        _prop = prop;
+        _receiver = receiver;
+    }
+};
+var p = new Proxy(target, handler);
+
+p.attr;
+
+assert.sameValue(_handler, handler);
+assert.sameValue(_target, target);
+assert.sameValue(_prop, "attr");
+assert.sameValue(_receiver, p, "receiver is the Proxy object");
+
+_prop = null;
+p["attr"];
+assert.sameValue(
+    _prop, "attr",
+    "trap is triggered both by p.attr and p['attr']"
+);

test/built-ins/Proxy/get/not-same-value-configurable-false-writable-false-throws.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: 9.5.8
+description: >
+    Throws if proxy return has not the same value for a non-writable,
+    non-configurable property
+info: >
+    [[Get]] (P, Receiver)
+
+    13. If targetDesc is not undefined, then
+        a. If IsDataDescriptor(targetDesc) and targetDesc.[[Configurable]] is
+        false and targetDesc.[[Writable]] is false, then
+            i. If SameValue(trapResult, targetDesc.[[Value]]) is false, throw a
+            TypeError exception.
+---*/
+
+var target = {};
+var p = new Proxy(target, {
+    get: function() {
+        return 2;
+    }
+});
+
+Object.defineProperty(target, 'attr', {
+    configurable: false,
+    writable: false,
+    value: 1
+});
+
+assert.throws(TypeError, function() {
+    p.attr;
+});
+
+assert.throws(TypeError, function() {
+    p['attr'];
+});

test/built-ins/Proxy/get/null-handler.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: 9.5.8
+description: >
+    [[Get]] (P, Receiver)
+
+    2. If handler is null, throw a TypeError exception.
+---*/
+
+var p = Proxy.revocable({}, {});
+
+p.revoke();
+
+assert.throws(TypeError, function() {
+    p.proxy.attr;
+});
+
+assert.throws(TypeError, function() {
+    p.proxy['attr'];
+});

test/built-ins/Proxy/get/return-is-abrupt.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: 9.5.8
+description: >
+    Trap returns abrupt.
+info: >
+    [[Get]] (P, Receiver)
+
+    9. Let trapResult be Call(trap, handler, «target, P, Receiver»).
+    10. ReturnIfAbrupt(trapResult).
+includes: [Test262Error.js]
+---*/
+
+var p = new Proxy({}, {
+    get: function() {
+        throw new Test262Error();
+    }
+});
+
+assert.throws(Test262Error, function() {
+    p.attr;
+});
+
+assert.throws(Test262Error, function() {
+    p["attr"];
+});

test/built-ins/Proxy/get/return-trap-result-accessor-property.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: 9.5.8
+description: >
+    [[Get]] (P, Receiver)
+
+    14. Return trapResult.
+---*/
+
+var target = {};
+var p = new Proxy(target, {
+    get: function() {
+        return 2;
+    }
+});
+
+Object.defineProperty(target, 'attr', {
+    get: function() {
+        return 1;
+    }
+});
+
+assert.sameValue(p.attr, 2);
+assert.sameValue(p['attr'], 2);

test/built-ins/Proxy/get/return-trap-result-configurable-false-writable-true.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: 9.5.8
+description: >
+    [[Get]] (P, Receiver)
+
+    14. Return trapResult.
+---*/
+
+var target = {};
+var p = new Proxy(target, {
+    get: function() {
+        return 2;
+    }
+});
+
+Object.defineProperty(target, 'attr', {
+    configurable: false,
+    writable: true,
+    value: 1
+});
+
+assert.sameValue(p.attr, 2);
+assert.sameValue(p['attr'], 2);