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 testValue() { 67 Number.prototype.causeError = function () { FAIL; }; 68 (1).causeError(); 69 } 70 71 function testConstructor() { 72 function Plonk() { FAIL; } 73 new Plonk(); 74 } 75 76 function testRenamedMethod() { 77 function a$b$c$d() { return FAIL; } 78 function Wookie() { } 79 Wookie.prototype.d = a$b$c$d; 80 (new Wookie).d(); 81 } 82 83 function testAnonymousMethod() { 84 (function () { FAIL }).call([1, 2, 3]); 85 } 86 87 function CustomError(message, stripPoint) { 88 this.message = message; 89 Error.captureStackTrace(this, stripPoint); 90 } 91 92 CustomError.prototype.toString = function () { 93 return "CustomError: " + this.message; 94 }; 95 96 function testDefaultCustomError() { 97 throw new CustomError("hep-hey", undefined); 98 } 99 100 function testStrippedCustomError() { 101 throw new CustomError("hep-hey", CustomError); 102 } 103 104 // Utility function for testing that the expected strings occur 105 // in the stack trace produced when running the given function. 106 function testTrace(name, fun, expected, unexpected) { 107 var threw = false; 108 try { 109 fun(); 110 } catch (e) { 111 for (var i = 0; i < expected.length; i++) { 112 assertTrue(e.stack.indexOf(expected[i]) != -1, 113 name + " doesn't contain expected[" + i + "]"); 114 } 115 if (unexpected) { 116 for (var i = 0; i < unexpected.length; i++) { 117 assertEquals(e.stack.indexOf(unexpected[i]), -1, 118 name + " contains unexpected[" + i + "]"); 119 } 120 } 121 threw = true; 122 } 123 assertTrue(threw, name + " didn't throw"); 124 } 125 126 // Test that the error constructor is not shown in the trace 127 function testCallerCensorship() { 128 var threw = false; 129 try { 130 FAIL; 131 } catch (e) { 132 assertEquals(-1, e.stack.indexOf('at new ReferenceError'), 133 "CallerCensorship contained new ReferenceError"); 134 threw = true; 135 } 136 assertTrue(threw, "CallerCensorship didn't throw"); 137 } 138 139 // Test that the explicit constructor call is shown in the trace 140 function testUnintendedCallerCensorship() { 141 var threw = false; 142 try { 143 new ReferenceError({ 144 toString: function () { 145 FAIL; 146 } 147 }); 148 } catch (e) { 149 assertTrue(e.stack.indexOf('at new ReferenceError') != -1, 150 "UnintendedCallerCensorship didn't contain new ReferenceError"); 151 threw = true; 152 } 153 assertTrue(threw, "UnintendedCallerCensorship didn't throw"); 154 } 155 156 // If an error occurs while the stack trace is being formatted it should 157 // be handled gracefully. 158 function testErrorsDuringFormatting() { 159 function Nasty() { } 160 Nasty.prototype.foo = function () { throw new RangeError(); }; 161 var n = new Nasty(); 162 n.__defineGetter__('constructor', function () { CONS_FAIL; }); 163 var threw = false; 164 try { 165 n.foo(); 166 } catch (e) { 167 threw = true; 168 assertTrue(e.stack.indexOf('<error: ReferenceError') != -1, 169 "ErrorsDuringFormatting didn't contain error: ReferenceError"); 170 } 171 assertTrue(threw, "ErrorsDuringFormatting didn't throw"); 172 threw = false; 173 // Now we can't even format the message saying that we couldn't format 174 // the stack frame. Put that in your pipe and smoke it! 175 ReferenceError.prototype.toString = function () { NESTED_FAIL; }; 176 try { 177 n.foo(); 178 } catch (e) { 179 threw = true; 180 assertTrue(e.stack.indexOf('<error>') != -1, 181 "ErrorsDuringFormatting didn't contain <error>"); 182 } 183 assertTrue(threw, "ErrorsDuringFormatting didnt' throw (2)"); 184 } 185 186 187 testTrace("testArrayNative", testArrayNative, ["Array.map (native)"]); 188 testTrace("testNested", testNested, ["at one", "at two", "at three"]); 189 testTrace("testMethodNameInference", testMethodNameInference, ["at Foo.bar"]); 190 testTrace("testImplicitConversion", testImplicitConversion, ["at Nirk.valueOf"]); 191 testTrace("testEval", testEval, ["at Doo (eval at testEval"]); 192 testTrace("testNestedEval", testNestedEval, ["eval at Inner (eval at Outer"]); 193 testTrace("testValue", testValue, ["at Number.causeError"]); 194 testTrace("testConstructor", testConstructor, ["new Plonk"]); 195 testTrace("testRenamedMethod", testRenamedMethod, ["Wookie.a$b$c$d [as d]"]); 196 testTrace("testAnonymousMethod", testAnonymousMethod, ["Array.<anonymous>"]); 197 testTrace("testDefaultCustomError", testDefaultCustomError, 198 ["hep-hey", "new CustomError"], 199 ["collectStackTrace"]); 200 testTrace("testStrippedCustomError", testStrippedCustomError, ["hep-hey"], 201 ["new CustomError", "collectStackTrace"]); 202 testCallerCensorship(); 203 testUnintendedCallerCensorship(); 204 testErrorsDuringFormatting(); 205