Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 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"; |
Ben Murdoch | 4a90d5f | 2016-03-22 12:00:34 +0000 | [diff] [blame] | 44 | assertThrows(()=>e.toString(), RangeError); |
Ben Murdoch | 3ef787d | 2012-04-12 10:51:47 +0100 | [diff] [blame] | 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")); |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 86 | |
| 87 | var obj = { |
| 88 | get constructor () { |
| 89 | assertUnreachable(); |
| 90 | } |
| 91 | }; |
| 92 | |
| 93 | assertThrows(function() { obj.x(); }); |