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// 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());
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