1 // Copyright 2009 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 function testMethodNameInference() { 29 function Foo() { } 30 Foo.prototype.bar = function () { FAIL; }; 31 (new Foo).bar(); 32 } 33 34 function testNested() { 35 function one() { 36 function two() { 37 function three() { 38 FAIL; 39 } 40 three(); 41 } 42 two(); 43 } 44 one(); 45 } 46 47 function testArrayNative() { 48 [1, 2, 3].map(function () { FAIL; }); 49 } 50 51 function testImplicitConversion() { 52 function Nirk() { } 53 Nirk.prototype.valueOf = function () { FAIL; }; 54 return 1 + (new Nirk); 55 } 56 57 function testEval() { 58 eval("function Doo() { FAIL; }; Doo();"); 59 } 60 61 function testNestedEval() { 62 var x = "FAIL"; 63 eval("function Outer() { eval('function Inner() { eval(x); }'); Inner(); }; Outer();"); 64 } 65 66 function testEvalWithSourceURL() { 67 eval("function Doo() { FAIL; }; Doo();\n//# sourceURL=res://name"); 68 } 69 70 function testNestedEvalWithSourceURL() { 71 var x = "FAIL"; 72 var innerEval = 'function Inner() { eval(x); }\n//@ sourceURL=res://inner-eval'; 73 eval("function Outer() { eval(innerEval); Inner(); }; Outer();\n//# sourceURL=res://outer-eval"); 74 } 75 76 function testValue() { 77 Number.prototype.causeError = function () { FAIL; }; 78 (1).causeError(); 79 } 80 81 function testConstructor() { 82 function Plonk() { FAIL; } 83 new Plonk(); 84 } 85 86 function testRenamedMethod() { 87 function a$b$c$d() { return FAIL; } 88 function Wookie() { } 89 Wookie.prototype.d = a$b$c$d; 90 (new Wookie).d(); 91 } 92 93 function testAnonymousMethod() { 94 (function () { FAIL }).call([1, 2, 3]); 95 } 96 97 function CustomError(message, stripPoint) { 98 this.message = message; 99 Error.captureStackTrace(this, stripPoint); 100 } 101 102 CustomError.prototype.toString = function () { 103 return "CustomError: " + this.message; 104 }; 105 106 function testDefaultCustomError() { 107 throw new CustomError("hep-hey", undefined); 108 } 109 110 function testStrippedCustomError() { 111 throw new CustomError("hep-hey", CustomError); 112 } 113 114 MyObj = function() { FAIL; } 115 116 MyObjCreator = function() {} 117 118 MyObjCreator.prototype.Create = function() { 119 return new MyObj(); 120 } 121 122 function testClassNames() { 123 (new MyObjCreator).Create(); 124 } 125 126 // Utility function for testing that the expected strings occur 127 // in the stack trace produced when running the given function. 128 function testTrace(name, fun, expected, unexpected) { 129 var threw = false; 130 try { 131 fun(); 132 } catch (e) { 133 for (var i = 0; i < expected.length; i++) { 134 assertTrue(e.stack.indexOf(expected[i]) != -1, 135 name + " doesn't contain expected[" + i + "] stack = " + e.stack); 136 } 137 if (unexpected) { 138 for (var i = 0; i < unexpected.length; i++) { 139 assertEquals(e.stack.indexOf(unexpected[i]), -1, 140 name + " contains unexpected[" + i + "]"); 141 } 142 } 143 threw = true; 144 } 145 assertTrue(threw, name + " didn't throw"); 146 } 147 148 // Test that the error constructor is not shown in the trace 149 function testCallerCensorship() { 150 var threw = false; 151 try { 152 FAIL; 153 } catch (e) { 154 assertEquals(-1, e.stack.indexOf('at new ReferenceError'), 155 "CallerCensorship contained new ReferenceError"); 156 threw = true; 157 } 158 assertTrue(threw, "CallerCensorship didn't throw"); 159 } 160 161 // Test that the explicit constructor call is shown in the trace 162 function testUnintendedCallerCensorship() { 163 var threw = false; 164 try { 165 new ReferenceError({ 166 toString: function () { 167 FAIL; 168 } 169 }); 170 } catch (e) { 171 assertTrue(e.stack.indexOf('at new ReferenceError') != -1, 172 "UnintendedCallerCensorship didn't contain new ReferenceError"); 173 threw = true; 174 } 175 assertTrue(threw, "UnintendedCallerCensorship didn't throw"); 176 } 177 178 // If an error occurs while the stack trace is being formatted it should 179 // be handled gracefully. 180 function testErrorsDuringFormatting() { 181 function Nasty() { } 182 Nasty.prototype.foo = function () { throw new RangeError(); }; 183 var n = new Nasty(); 184 n.__defineGetter__('constructor', function () { CONS_FAIL; }); 185 var threw = false; 186 try { 187 n.foo(); 188 } catch (e) { 189 threw = true; 190 assertTrue(e.stack.indexOf('<error: ReferenceError') != -1, 191 "ErrorsDuringFormatting didn't contain error: ReferenceError"); 192 } 193 assertTrue(threw, "ErrorsDuringFormatting didn't throw"); 194 threw = false; 195 // Now we can't even format the message saying that we couldn't format 196 // the stack frame. Put that in your pipe and smoke it! 197 ReferenceError.prototype.toString = function () { NESTED_FAIL; }; 198 try { 199 n.foo(); 200 } catch (e) { 201 threw = true; 202 assertTrue(e.stack.indexOf('<error>') != -1, 203 "ErrorsDuringFormatting didn't contain <error>"); 204 } 205 assertTrue(threw, "ErrorsDuringFormatting didnt' throw (2)"); 206 } 207 208 209 // Poisonous object that throws a reference error if attempted converted to 210 // a primitive values. 211 var thrower = { valueOf: function() { FAIL; }, 212 toString: function() { FAIL; } }; 213 214 // Tests that a native constructor function is included in the 215 // stack trace. 216 function testTraceNativeConstructor(nativeFunc) { 217 var nativeFuncName = nativeFunc.name; 218 try { 219 new nativeFunc(thrower); 220 assertUnreachable(nativeFuncName); 221 } catch (e) { 222 assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName); 223 } 224 } 225 226 // Tests that a native conversion function is included in the 227 // stack trace. 228 function testTraceNativeConversion(nativeFunc) { 229 var nativeFuncName = nativeFunc.name; 230 try { 231 nativeFunc(thrower); 232 assertUnreachable(nativeFuncName); 233 } catch (e) { 234 assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName); 235 } 236 } 237 238 239 function testOmittedBuiltin(throwing, omitted) { 240 try { 241 throwing(); 242 assertUnreachable(omitted); 243 } catch (e) { 244 assertTrue(e.stack.indexOf(omitted) < 0, omitted); 245 } 246 } 247 248 249 testTrace("testArrayNative", testArrayNative, ["Array.map (native)"]); 250 testTrace("testNested", testNested, ["at one", "at two", "at three"]); 251 testTrace("testMethodNameInference", testMethodNameInference, ["at Foo.bar"]); 252 testTrace("testImplicitConversion", testImplicitConversion, ["at Nirk.valueOf"]); 253 testTrace("testEval", testEval, ["at Doo (eval at testEval"]); 254 testTrace("testNestedEval", testNestedEval, ["eval at Inner (eval at Outer"]); 255 testTrace("testEvalWithSourceURL", testEvalWithSourceURL, 256 [ "at Doo (res://name:1:18)" ]); 257 testTrace("testNestedEvalWithSourceURL", testNestedEvalWithSourceURL, 258 [" at Inner (res://inner-eval:1:20)", 259 " at Outer (res://outer-eval:1:37)"]); 260 testTrace("testValue", testValue, ["at Number.causeError"]); 261 testTrace("testConstructor", testConstructor, ["new Plonk"]); 262 testTrace("testRenamedMethod", testRenamedMethod, ["Wookie.a$b$c$d [as d]"]); 263 testTrace("testAnonymousMethod", testAnonymousMethod, ["Array.<anonymous>"]); 264 testTrace("testDefaultCustomError", testDefaultCustomError, 265 ["hep-hey", "new CustomError"], 266 ["collectStackTrace"]); 267 testTrace("testStrippedCustomError", testStrippedCustomError, ["hep-hey"], 268 ["new CustomError", "collectStackTrace"]); 269 testTrace("testClassNames", testClassNames, 270 ["new MyObj", "MyObjCreator.Create"], ["as Create"]); 271 testCallerCensorship(); 272 testUnintendedCallerCensorship(); 273 testErrorsDuringFormatting(); 274 275 testTraceNativeConversion(String); // Does ToString on argument. 276 testTraceNativeConversion(Number); // Does ToNumber on argument. 277 testTraceNativeConversion(RegExp); // Does ToString on argument. 278 279 testTraceNativeConstructor(String); // Does ToString on argument. 280 testTraceNativeConstructor(Number); // Does ToNumber on argument. 281 testTraceNativeConstructor(RegExp); // Does ToString on argument. 282 testTraceNativeConstructor(Date); // Does ToNumber on argument. 283 284 // Omitted because QuickSort has builtins object as receiver, and is non-native 285 // builtin. 286 testOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) { 287 (b < a) - (a < b); }); 288 }, "QuickSort"); 289 290 // Omitted because ADD from runtime.js is non-native builtin. 291 testOmittedBuiltin(function(){ thrower + 2; }, "ADD"); 292 293 var error = new Error(); 294 error.toString = function() { assertUnreachable(); }; 295 error.stack; 296 297 error = new Error(); 298 error.name = { toString: function() { assertUnreachable(); }}; 299 error.message = { toString: function() { assertUnreachable(); }}; 300 error.stack; 301 302 error = new Error(); 303 Array.prototype.push = function(x) { assertUnreachable(); }; 304 Array.prototype.join = function(x) { assertUnreachable(); }; 305 error.stack; 306 307 var fired = false; 308 error = new Error({ toString: function() { fired = true; } }); 309 assertTrue(fired); 310 error.stack; 311 assertTrue(fired); 312 313 // Check that throwing exception in a custom stack trace formatting function 314 // does not lead to recursion. 315 Error.prepareStackTrace = function() { throw new Error("abc"); }; 316 var message; 317 try { 318 try { 319 throw new Error(); 320 } catch (e) { 321 e.stack; 322 } 323 } catch (e) { 324 message = e.message; 325 } 326 327 assertEquals("abc", message); 328 329 // Test that modifying Error.prepareStackTrace by itself works. 330 Error.prepareStackTrace = function() { Error.prepareStackTrace = "custom"; }; 331 new Error().stack; 332 333 assertEquals("custom", Error.prepareStackTrace); 334 335 // Check that the formatted stack trace can be set to undefined. 336 error = new Error(); 337 error.stack = undefined; 338 assertEquals(undefined, error.stack); 339 340 // Check that the stack trace accessors are not forcibly set. 341 var my_error = {}; 342 Object.freeze(my_error); 343 assertThrows(function() { Error.captureStackTrace(my_error); }); 344 345 my_error = {}; 346 Object.preventExtensions(my_error); 347 assertThrows(function() { Error.captureStackTrace(my_error); }); 348 349 var fake_error = {}; 350 my_error = new Error(); 351 var stolen_getter = Object.getOwnPropertyDescriptor(my_error, 'stack').get; 352 Object.defineProperty(fake_error, 'stack', { get: stolen_getter }); 353 assertEquals(undefined, fake_error.stack); 354