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| 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 |
| 31 var e = new Error(); |
| 32 assertEquals('Error', e.toString()); |
| 33 |
| 34 |
| 35 // Test printing of cyclic errors which return the empty string for |
| 36 // compatibility with Safari and Firefox. |
| 37 |
| 38 e = new Error(); |
| 39 e.name = e; |
| 40 e.message = e; |
| 41 e.stack = "Does not occur in output"; |
| 42 e.arguments = "Does not occur in output"; |
| 43 e.type = "Does not occur in output"; |
| 44 assertEquals('', e.toString()); |
| 45 |
| 46 e = new Error(); |
| 47 e.name = [ e ]; |
| 48 e.message = [ e ]; |
| 49 e.stack = "Does not occur in output"; |
| 50 e.arguments = "Does not occur in output"; |
| 51 e.type = "Does not occur in output"; |
| 52 assertEquals('', 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 |
| 58 function 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 |
| 78 assertEquals(["Error",[1,3]], testErrorToString(undefined, undefined)); |
| 79 assertEquals(["e1",[1,2,3]], testErrorToString("e1", undefined)); |
| 80 assertEquals(["e1: null",[1,2,3,4]], testErrorToString("e1", null)); |
| 81 assertEquals(["e1",[1,2,3,4]], testErrorToString("e1", "")); |
| 82 assertEquals(["Error: e2",[1,3,4]], testErrorToString(undefined, "e2")); |
| 83 assertEquals(["null: e2",[1,2,3,4]], testErrorToString(null, "e2")); |
| 84 assertEquals(["e2",[1,2,3,4]], testErrorToString("", "e2")); |
| 85 assertEquals(["e1: e2",[1,2,3,4]], testErrorToString("e1", "e2")); |
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