454c1faeef
R=yangguo@chromium.org LOG=n Committed: https://crrev.com/5dffa35350d0f57402806e6bd87a914e1d5933e4 Cr-Commit-Position: refs/heads/master@{#32695} Review URL: https://codereview.chromium.org/1507273002 Cr-Commit-Position: refs/heads/master@{#32720}
110 lines
4.5 KiB
JavaScript
110 lines
4.5 KiB
JavaScript
// Copyright 2011 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// Check that message and name are not enumerable on Error objects.
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var desc = Object.getOwnPropertyDescriptor(Error.prototype, 'name');
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assertFalse(desc['enumerable']);
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desc = Object.getOwnPropertyDescriptor(Error.prototype, 'message');
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assertFalse(desc['enumerable']);
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var e = new Error("foobar");
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desc = Object.getOwnPropertyDescriptor(e, 'message');
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assertFalse(desc['enumerable']);
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desc = Object.getOwnPropertyDescriptor(e, 'stack');
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assertFalse(desc['enumerable']);
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var e = new Error();
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assertFalse(e.hasOwnProperty('message'));
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// name is not tested above, but in addition we should have no enumerable
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// properties, so we simply assert that.
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for (var v in e) {
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assertUnreachable();
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}
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// Check that error construction does not call setters for the
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// properties on error objects in prototypes.
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function fail() { assertUnreachable(); };
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ReferenceError.prototype.__defineSetter__('name', fail);
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ReferenceError.prototype.__defineSetter__('message', fail);
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ReferenceError.prototype.__defineSetter__('stack', fail);
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var e = new ReferenceError();
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assertTrue(e.hasOwnProperty('stack'));
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var e = new ReferenceError('123');
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assertTrue(e.hasOwnProperty('message'));
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assertTrue(e.hasOwnProperty('stack'));
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try {
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eval("var error = reference");
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} catch (error) {
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e = error;
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}
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assertTrue(e.hasOwnProperty('stack'));
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// Check that intercepting property access from toString is prevented for
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// compiler errors. This is not specified, but allowing interception through a
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// getter can leak error objects from different script tags in the same context
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// in a browser setting. Use Realm.eval as a proxy for loading scripts. We
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// ignore the exception thrown from it since that would not be catchable from
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// user-land code.
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var errors = [SyntaxError, ReferenceError, TypeError, RangeError, URIError];
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var error_triggers = ["syntax error",
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"var error = reference",
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"undefined()",
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"String.fromCodePoint(0xFFFFFF)",
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"decodeURI('%F')"];
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for (var i in errors) {
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// Monkey-patch prototype.
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for (var prop of ["name", "message", "stack"]) {
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errors[i].prototype.__defineGetter__(prop, fail);
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}
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// String conversion should not invoke monkey-patched getters on prototype.
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assertThrows(()=>Realm.eval(0, error_triggers[i]));
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}
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// Monkey-patching non-internal errors should still be observable.
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function MyError() {}
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MyError.prototype = new Error;
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var errors = [Error, RangeError, EvalError, URIError,
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SyntaxError, ReferenceError, TypeError, MyError];
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for (var i in errors) {
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errors[i].prototype.__defineGetter__("name", function() { return "my"; });
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errors[i].prototype.__defineGetter__("message", function() { return "moo"; });
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var e = new errors[i];
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assertEquals("my: moo", e.toString());
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}
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Error.prototype.toString = Object.prototype.toString;
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assertEquals("[object Object]", Error.prototype.toString());
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assertEquals(Object.prototype, Error.prototype.__proto__);
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var e = new Error("foo");
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assertEquals("[object Error]", e.toString());
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