| /* |
| * Any copyright is dedicated to the Public Domain. |
| * http://creativecommons.org/licenses/publicdomain/ |
| * Contributor: Andreas Gal |
| */ |
| |
| //----------------------------------------------------------------------------- |
| var BUGNUMBER = 546590; |
| var summary = 'basic scripted proxies tests'; |
| var actual = ''; |
| var expect = ''; |
| |
| //----------------------------------------------------------------------------- |
| test(); |
| //----------------------------------------------------------------------------- |
| |
| function test() { |
| enterFunc ('test'); |
| printBugNumber(BUGNUMBER); |
| printStatus(summary); |
| |
| testObj({ foo: 1, bar: 2 }); |
| testObj({ 1: 2, 3: 4 }); |
| testObj([ 1, 2, 3 ]); |
| testObj(new Date()); |
| testObj(new Array()); |
| testObj(new RegExp()); |
| testObj(Date); |
| testObj(Array); |
| testObj(RegExp); |
| |
| /* Test function proxies. */ |
| var proxy = Proxy.createFunction({ |
| get: function(obj, name) { |
| return Function.prototype[name]; |
| }, |
| getOwnPropertyDescriptor: function(obj, name) { |
| return Object.getOwnPropertyDescriptor(Function.prototype, name); |
| }, |
| fix: function() { |
| return ({}); |
| } |
| }, function() { return "call"; }); |
| |
| assertEq(proxy(), "call"); |
| assertEq(Function.prototype.bind.call(proxy)(), "call"); |
| assertEq(typeof proxy, "function"); |
| if ("isTrapping" in Proxy) { |
| assertEq(Proxy.isTrapping(proxy), true); |
| assertEq(Proxy.fix(proxy), true); |
| assertEq(Proxy.isTrapping(proxy), false); |
| assertEq(typeof proxy, "function"); |
| assertEq(proxy(), "call"); |
| } |
| |
| /* Test function proxies as constructors. */ |
| var proxy = Proxy.createFunction({ |
| get: function(obj, name) { |
| return Function.prototype[name]; |
| }, |
| getOwnPropertyDescriptor: function(obj, name) { |
| return Object.getOwnPropertyDescriptor(Function.prototype, name); |
| }, |
| fix: function() { |
| return ({}); |
| } |
| }, |
| function() { var x = {}; x.origin = "call"; return x; }, |
| function() { var x = {}; x.origin = "new"; return x; }) |
| |
| assertEq(proxy().origin, "call"); |
| assertEq(Function.prototype.bind.call(proxy)().origin, "call"); |
| assertEq((new proxy()).origin, "new"); |
| assertEq(new (Function.prototype.bind.call(proxy))().origin, "new"); |
| if ("fix" in Proxy) { |
| assertEq(Proxy.fix(proxy), true); |
| assertEq(proxy().origin, "call"); |
| assertEq((new proxy()).origin, "new"); |
| } |
| |
| /* Test fallback on call if no construct trap was given. */ |
| var proxy = Proxy.createFunction({ |
| get: function(obj, name) { return Function.prototype[name]; }, |
| fix: function() { return ({}); } |
| }, |
| function() { this.origin = "new"; return "new-ret"; }); |
| |
| assertEq((new proxy()).origin, "new"); |
| if ("fix" in Proxy) { |
| assertEq(Proxy.fix(proxy), true); |
| assertEq((new proxy()).origin, "new"); |
| } |
| |
| /* Test invoke. */ |
| var proxy = Proxy.create({ get: function(obj,name) { return function(a,b,c) { return name + uneval([a,b,c]); } }}); |
| assertEq(proxy.foo(1,2,3), "foo[1, 2, 3]"); |
| |
| reportCompare(0, 0, "done."); |
| |
| exitFunc ('test'); |
| } |
| |
| /* Test object proxies. */ |
| function noopHandlerMaker(obj) { |
| return { |
| getOwnPropertyDescriptor: function(name) { |
| var desc = Object.getOwnPropertyDescriptor(obj); |
| // a trapping proxy's properties must always be configurable |
| desc.configurable = true; |
| return desc; |
| }, |
| getPropertyDescriptor: function(name) { |
| var desc = Object.getPropertyDescriptor(obj); // assumed |
| // a trapping proxy's properties must always be configurable |
| desc.configurable = true; |
| return desc; |
| }, |
| getOwnPropertyNames: function() { |
| return Object.getOwnPropertyNames(obj); |
| }, |
| defineProperty: function(name, desc) { |
| return Object.defineProperty(obj, name, desc); |
| }, |
| delete: function(name) { return delete obj[name]; }, |
| fix: function() { |
| // As long as obj is not frozen, the proxy won't allow itself to be fixed |
| // if (!Object.isFrozen(obj)) [not implemented in SpiderMonkey] |
| // return undefined; |
| // return Object.getOwnProperties(obj); // assumed [not implemented in SpiderMonkey] |
| var props = {}; |
| for (x in obj) |
| props[x] = Object.getOwnPropertyDescriptor(obj, x); |
| return props; |
| }, |
| has: function(name) { return name in obj; }, |
| hasOwn: function(name) { return ({}).hasOwnProperty.call(obj, name); }, |
| get: function(receiver, name) { return obj[name]; }, |
| set: function(receiver, name, val) { obj[name] = val; return true; }, // bad behavior when set fails in non-strict mode |
| enumerate: function() { |
| var result = []; |
| for (name in obj) { result.push(name); }; |
| return result; |
| }, |
| keys: function() { return Object.keys(obj); } |
| }; |
| }; |
| |
| function testNoopHandler(obj, proxy) { |
| /* Check that both objects see the same properties. */ |
| for (x in obj) |
| assertEq(obj[x], proxy[x]); |
| for (x in proxy) |
| assertEq(obj[x], proxy[x]); |
| /* Check that the iteration order is the same. */ |
| var a = [], b = []; |
| for (x in obj) |
| a.push(x); |
| for (x in proxy) |
| b.push(x); |
| assertEq(uneval(a), uneval(b)); |
| } |
| |
| function testObj(obj) { |
| var proxy = Proxy.create(noopHandlerMaker(obj)); |
| testNoopHandler(obj, proxy); |
| assertEq(typeof proxy, "object"); |
| if ("isTrapping" in Proxy) { |
| assertEq(Proxy.isTrapping(proxy), true); |
| assertEq(Proxy.fix(proxy), true); |
| assertEq(Proxy.isTrapping(proxy), false); |
| assertEq(typeof proxy, "object"); |
| testNoopHandler(obj, proxy); |
| } |
| } |