| // Copyright 2011 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // Flags: --harmony-proxies |
| |
| // Helper. |
| |
| function TestWithProxies(test, x, y, z) { |
| test(function(h){ return new Proxy({}, h) }, x, y, z) |
| } |
| |
| |
| // Iterate over a proxy. |
| |
| function TestForIn(properties, handler) { |
| TestWithProxies(TestForIn2, properties, handler) |
| } |
| |
| function TestForIn2(create, properties, handler) { |
| var p = create(handler) |
| var found = [] |
| for (var x in p) found.push(x) |
| assertArrayEquals(properties, found) |
| } |
| |
| TestForIn(["0", "a"], { |
| ownKeys() { return ["0", "a"] }, |
| has(target, property) { return true }, |
| getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }} |
| }) |
| |
| TestForIn(["null", "a"], { |
| ownKeys() { return this.enumerate() }, |
| enumerate() { return ["null", "a"] }, |
| has(target, property) { return true }, |
| getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }} |
| }) |
| |
| |
| // Iterate over an object with a proxy prototype. |
| |
| function TestForInDerived(properties, handler) { |
| TestWithProxies(TestForInDerived2, properties, handler) |
| } |
| |
| function TestForInDerived2(create, properties, handler) { |
| var p = create(handler) |
| var o = Object.create(p) |
| o.z = 0 |
| var found = [] |
| for (var x in o) found.push(x) |
| assertArrayEquals(["z"].concat(properties), found) |
| |
| var oo = Object.create(o) |
| oo.y = 0 |
| var found = [] |
| for (var x in oo) found.push(x) |
| assertArrayEquals(["y", "z"].concat(properties), found) |
| } |
| |
| TestForInDerived(["0", "a"], { |
| ownKeys: function() { return ["0", "a"] }, |
| has: function(t, k) { return k == "0" || k == "a" }, |
| getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }} |
| }) |
| |
| TestForInDerived(["null", "a"], { |
| ownKeys: function() { return this.enumerate() }, |
| enumerate: function() { return ["null", "a"] }, |
| has: function(t, k) { return k == "null" || k == "a" }, |
| getOwnPropertyDescriptor() { return { enumerable: true, configurable: true }} |
| }) |
| |
| |
| |
| // Throw exception in ownKeys trap. |
| |
| function TestForInThrow(handler) { |
| TestWithProxies(TestForInThrow2, handler) |
| } |
| |
| function TestForInThrow2(create, handler) { |
| var p = create(handler) |
| var o = Object.create(p) |
| assertThrowsEquals(function(){ for (var x in p) {} }, "myexn") |
| assertThrowsEquals(function(){ for (var x in o) {} }, "myexn") |
| } |
| |
| TestForInThrow({ |
| ownKeys: function() { throw "myexn" } |
| }) |
| |
| TestForInThrow({ |
| ownKeys: function() { return this.enumerate() }, |
| enumerate: function() { throw "myexn" } |
| }) |
| |
| TestForInThrow(new Proxy({}, { |
| get: function(pr, pk) { |
| return function() { throw "myexn" } |
| } |
| })); |
| |
| (function() { |
| var p = new Proxy({}, {ownKeys:function() { return ["0"]; }}); |
| var o = [0]; |
| o.__proto__ = p; |
| var keys = []; |
| for (var k in o) { keys.push(k); }; |
| assertEquals(["0"], keys); |
| })(); |
| |
| (function () { |
| var p = new Proxy({}, {ownKeys: function() { return ["1", Symbol(), "2"] }}); |
| assertEquals(["1","2"], Object.getOwnPropertyNames(p)); |
| })(); |