1 /* ***** BEGIN LICENSE BLOCK ***** 2 * Version: NPL 1.1/GPL 2.0/LGPL 2.1 3 * 4 * The contents of this file are subject to the Netscape Public License 5 * Version 1.1 (the "License"); you may not use this file except in 6 * compliance with the License. You may obtain a copy of the License at 7 * http://www.mozilla.org/NPL/ 8 * 9 * Software distributed under the License is distributed on an "AS IS" basis, 10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 11 * for the specific language governing rights and limitations under the 12 * License. 13 * 14 * The Original Code is JavaScript Engine testing utilities. 15 * 16 * The Initial Developer of the Original Code is Netscape Communications Corp. 17 * Portions created by the Initial Developer are Copyright (C) 2002 18 * the Initial Developer. All Rights Reserved. 19 * 20 * Contributor(s): brendan (at) mozilla.org, pschwartau (at) netscape.com 21 * 22 * Alternatively, the contents of this file may be used under the terms of 23 * either the GNU General Public License Version 2 or later (the "GPL"), or 24 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 25 * in which case the provisions of the GPL or the LGPL are applicable instead 26 * of those above. If you wish to allow use of your version of this file only 27 * under the terms of either the GPL or the LGPL, and not to allow others to 28 * use your version of this file under the terms of the NPL, indicate your 29 * decision by deleting the provisions above and replace them with the notice 30 * and other provisions required by the GPL or the LGPL. If you do not delete 31 * the provisions above, a recipient may use your version of this file under 32 * the terms of any one of the NPL, the GPL or the LGPL. 33 * 34 * ***** END LICENSE BLOCK ***** 35 * 36 * 37 * Date: 28 Feb 2002 38 * SUMMARY: Testing that Error.stack distinguishes between: 39 * 40 * A) top-level calls: myFunc(); 41 * B) no-name function calls: function() { myFunc();} () 42 * 43 * The stack frame for A) should begin with '@' 44 * The stack frame for B) should begin with '()' 45 * 46 * This behavior was coded by Brendan during his fix for bug 127136. 47 * See http://bugzilla.mozilla.org/show_bug.cgi?id=127136#c13 48 * 49 * Note: our function getStackFrames(err) orders the array of stack frames 50 * so that the 0th element will correspond to the highest frame, i.e. will 51 * correspond to a line in top-level code. The 1st element will correspond 52 * to the function that is called first, and so on... 53 * 54 * NOTE: At present Rhino does not have an Error.stack property. It is an 55 * ECMA extension, see http://bugzilla.mozilla.org/show_bug.cgi?id=123177 56 */ 57 //----------------------------------------------------------------------------- 58 var UBound = 0; 59 var bug = '(none)'; 60 var summary = 'Testing Error.stack'; 61 var status = ''; 62 var statusitems = []; 63 var actual = ''; 64 var actualvalues = []; 65 var expect= ''; 66 var expectedvalues = []; 67 var myErr = ''; 68 var stackFrames = ''; 69 70 71 function A(x,y) 72 { 73 return B(x+1,y+1); 74 } 75 76 function B(x,z) 77 { 78 return C(x+1,z+1); 79 } 80 81 function C(x,y) 82 { 83 return D(x+1,y+1); 84 } 85 86 function D(x,z) 87 { 88 try 89 { 90 throw new Error('meep!'); 91 } 92 catch (e) 93 { 94 return e; 95 } 96 } 97 98 99 myErr = A(44,13); 100 stackFrames = getStackFrames(myErr); 101 status = inSection(1); 102 actual = stackFrames[0].substring(0,1); 103 expect = '@'; 104 addThis(); 105 106 status = inSection(2); 107 actual = stackFrames[1].substring(0,9); 108 expect = 'A(44,13)@'; 109 addThis(); 110 111 status = inSection(3); 112 actual = stackFrames[2].substring(0,9); 113 expect = 'B(45,14)@'; 114 addThis(); 115 116 status = inSection(4); 117 actual = stackFrames[3].substring(0,9); 118 expect = 'C(46,15)@'; 119 addThis(); 120 121 status = inSection(5); 122 actual = stackFrames[4].substring(0,9); 123 expect = 'D(47,16)@'; 124 addThis(); 125 126 127 128 myErr = A('44:foo','13:bar'); 129 stackFrames = getStackFrames(myErr); 130 status = inSection(6); 131 actual = stackFrames[0].substring(0,1); 132 expect = '@'; 133 addThis(); 134 135 status = inSection(7); 136 actual = stackFrames[1].substring(0,21); 137 expect = 'A("44:foo","13:bar")@'; 138 addThis(); 139 140 status = inSection(8); 141 actual = stackFrames[2].substring(0,23); 142 expect = 'B("44:foo1","13:bar1")@'; 143 addThis(); 144 145 status = inSection(9); 146 actual = stackFrames[3].substring(0,25); 147 expect = 'C("44:foo11","13:bar11")@'; 148 addThis(); 149 150 status = inSection(10); 151 actual = stackFrames[4].substring(0,27); 152 expect = 'D("44:foo111","13:bar111")@';; 153 addThis(); 154 155 156 157 /* 158 * Make the first frame occur in a function with an empty name - 159 */ 160 myErr = function() { return A(44,13); } (); 161 stackFrames = getStackFrames(myErr); 162 status = inSection(11); 163 actual = stackFrames[0].substring(0,1); 164 expect = '@'; 165 addThis(); 166 167 status = inSection(12); 168 actual = stackFrames[1].substring(0,3); 169 expect = '()@'; 170 addThis(); 171 172 status = inSection(13); 173 actual = stackFrames[2].substring(0,9); 174 expect = 'A(44,13)@'; 175 addThis(); 176 177 // etc. for the rest of the frames as above 178 179 180 181 /* 182 * Make the first frame occur in a function with name 'anonymous' - 183 */ 184 var f = Function('return A(44,13);'); 185 myErr = f(); 186 stackFrames = getStackFrames(myErr); 187 status = inSection(14); 188 actual = stackFrames[0].substring(0,1); 189 expect = '@'; 190 addThis(); 191 192 status = inSection(15); 193 actual = stackFrames[1].substring(0,12); 194 expect = 'anonymous()@'; 195 addThis(); 196 197 status = inSection(16); 198 actual = stackFrames[2].substring(0,9); 199 expect = 'A(44,13)@'; 200 addThis(); 201 202 // etc. for the rest of the frames as above 203 204 205 206 /* 207 * Make a user-defined error via the Error() function - 208 */ 209 var message = 'Hi there!'; var fileName = 'file name'; var lineNumber = 0; 210 myErr = Error(message, fileName, lineNumber); 211 stackFrames = getStackFrames(myErr); 212 status = inSection(17); 213 actual = stackFrames[0].substring(0,1); 214 expect = '@'; 215 addThis(); 216 217 218 /* 219 * Now use the |new| keyword. Re-use the same params - 220 */ 221 myErr = new Error(message, fileName, lineNumber); 222 stackFrames = getStackFrames(myErr); 223 status = inSection(18); 224 actual = stackFrames[0].substring(0,1); 225 expect = '@'; 226 addThis(); 227 228 229 230 231 //----------------------------------------------------------------------------- 232 test(); 233 //----------------------------------------------------------------------------- 234 235 236 237 /* 238 * Split the string |err.stack| along its '\n' delimiter. 239 * As of 2002-02-28 |err.stack| ends with the delimiter, so 240 * the resulting array has an empty string as its last element. 241 * 242 * Pop that useless element off before doing anything. 243 * Then reverse the array, for convenience of indexing - 244 */ 245 function getStackFrames(err) 246 { 247 var arr = err.stack.split('\n'); 248 arr.pop(); 249 return arr.reverse(); 250 } 251 252 253 function addThis() 254 { 255 statusitems[UBound] = status; 256 actualvalues[UBound] = actual; 257 expectedvalues[UBound] = expect; 258 UBound++; 259 } 260 261 262 function test() 263 { 264 enterFunc('test'); 265 printBugNumber(bug); 266 printStatus(summary); 267 268 for (var i=0; i<UBound; i++) 269 { 270 reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); 271 } 272 273 exitFunc ('test'); 274 } 275
