1// Copyright 2011 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28 29// Test default string representation of an Error object. 30 31var e = new Error(); 32assertEquals('Error', e.toString()); 33 34 35// Test printing of cyclic errors which return the empty string for 36// compatibility with Safari and Firefox. 37 38e = new Error(); 39e.name = e; 40e.message = e; 41e.stack = "Does not occur in output"; 42e.arguments = "Does not occur in output"; 43e.type = "Does not occur in output"; 44assertEquals('', e.toString()); 45 46e = new Error(); 47e.name = [ e ]; 48e.message = [ e ]; 49e.stack = "Does not occur in output"; 50e.arguments = "Does not occur in output"; 51e.type = "Does not occur in output"; 52assertEquals('', e.toString()); 53 54 55// Test the sequence in which getters and toString operations are called 56// on a given Error object. Verify the produced string representation. 57 58function testErrorToString(nameValue, messageValue) { 59 var seq = []; 60 var e = { 61 get name() { 62 seq.push(1); 63 return (nameValue === undefined) ? nameValue : { 64 toString: function() { seq.push(2); return nameValue; } 65 }; 66 }, 67 get message() { 68 seq.push(3); 69 return (messageValue === undefined) ? messageValue : { 70 toString: function() { seq.push(4); return messageValue; } 71 }; 72 } 73 }; 74 var string = Error.prototype.toString.call(e); 75 return [string,seq]; 76} 77 78assertEquals(["Error",[1,3]], testErrorToString(undefined, undefined)); 79assertEquals(["e1",[1,2,3]], testErrorToString("e1", undefined)); 80assertEquals(["e1: null",[1,2,3,4]], testErrorToString("e1", null)); 81assertEquals(["e1",[1,2,3,4]], testErrorToString("e1", "")); 82assertEquals(["Error: e2",[1,3,4]], testErrorToString(undefined, "e2")); 83assertEquals(["null: e2",[1,2,3,4]], testErrorToString(null, "e2")); 84assertEquals(["e2",[1,2,3,4]], testErrorToString("", "e2")); 85assertEquals(["e1: e2",[1,2,3,4]], testErrorToString("e1", "e2")); 86