| // 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: --allow-natives-syntax |
| |
| // Check that message and name are not enumerable on Error objects. |
| var desc = Object.getOwnPropertyDescriptor(Error.prototype, 'name'); |
| assertFalse(desc['enumerable']); |
| desc = Object.getOwnPropertyDescriptor(Error.prototype, 'message'); |
| assertFalse(desc['enumerable']); |
| |
| var e = new Error("foobar"); |
| desc = Object.getOwnPropertyDescriptor(e, 'message'); |
| assertFalse(desc['enumerable']); |
| desc = Object.getOwnPropertyDescriptor(e, 'arguments'); |
| assertFalse(desc['enumerable']); |
| desc = Object.getOwnPropertyDescriptor(e, 'type'); |
| assertFalse(desc['enumerable']); |
| desc = Object.getOwnPropertyDescriptor(e, 'stack'); |
| assertFalse(desc['enumerable']); |
| |
| var e = new Error(); |
| assertFalse(e.hasOwnProperty('message')); |
| |
| // name is not tested above, but in addition we should have no enumerable |
| // properties, so we simply assert that. |
| for (var v in e) { |
| assertUnreachable(); |
| } |
| |
| // Check that error construction does not call setters for the |
| // properties on error objects in prototypes. |
| function fail() { assertUnreachable(); }; |
| ReferenceError.prototype.__defineSetter__('name', fail); |
| ReferenceError.prototype.__defineSetter__('message', fail); |
| ReferenceError.prototype.__defineSetter__('type', fail); |
| ReferenceError.prototype.__defineSetter__('arguments', fail); |
| ReferenceError.prototype.__defineSetter__('stack', fail); |
| |
| var e = new ReferenceError(); |
| assertTrue(e.hasOwnProperty('stack')); |
| assertTrue(e.hasOwnProperty('type')); |
| assertTrue(e.hasOwnProperty('arguments')); |
| |
| var e = new ReferenceError('123'); |
| assertTrue(e.hasOwnProperty('message')); |
| assertTrue(e.hasOwnProperty('stack')); |
| assertTrue(e.hasOwnProperty('type')); |
| assertTrue(e.hasOwnProperty('arguments')); |
| |
| var e = %MakeReferenceError("my_test_error", [0, 1]); |
| assertTrue(e.hasOwnProperty('stack')); |
| assertTrue(e.hasOwnProperty('type')); |
| assertTrue(e.hasOwnProperty('arguments')); |
| assertEquals("my_test_error", e.type) |
| |
| // Check that intercepting property access from toString is prevented for |
| // compiler errors. This is not specified, but allowing interception |
| // through a getter can leak error objects from different |
| // script tags in the same context in a browser setting. |
| var errors = [SyntaxError, ReferenceError, TypeError]; |
| for (var i in errors) { |
| var name = errors[i].prototype.toString(); |
| // Monkey-patch prototype. |
| var props = ["name", "message", "type", "arguments", "stack"]; |
| for (var j in props) { |
| errors[i].prototype.__defineGetter__(props[j], fail); |
| } |
| // String conversion should not invoke monkey-patched getters on prototype. |
| var e = new errors[i]; |
| assertEquals(name, e.toString()); |
| // Custom getters in actual objects are welcome. |
| e.__defineGetter__("name", function() { return "mine"; }); |
| assertEquals("mine", e.toString()); |
| } |
| |
| // Monkey-patching non-static errors should still be observable. |
| function MyError() {} |
| MyError.prototype = new Error; |
| var errors = [Error, RangeError, EvalError, URIError, MyError]; |
| for (var i in errors) { |
| errors[i].prototype.__defineGetter__("name", function() { return "my"; }); |
| errors[i].prototype.__defineGetter__("message", function() { return "moo"; }); |
| var e = new errors[i]; |
| assertEquals("my: moo", e.toString()); |
| } |
| |
| |
| Error.prototype.toString = Object.prototype.toString; |
| assertEquals("[object Error]", Error.prototype.toString()); |
| assertEquals(Object.prototype, Error.prototype.__proto__); |
| var e = new Error("foo"); |
| assertEquals("[object Error]", e.toString()); |