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
28function testMethodNameInference() {
29  function Foo() { }
30  Foo.prototype.bar = function () { FAIL; };
31  (new Foo).bar();
32}
33
34function testNested() {
35  function one() {
36    function two() {
37      function three() {
38        FAIL;
39      }
40      three();
41    }
42    two();
43  }
44  one();
45}
46
47function testArrayNative() {
48  [1, 2, 3].map(function () { FAIL; });
49}
50
51function testImplicitConversion() {
52  function Nirk() { }
53  Nirk.prototype.valueOf = function () { FAIL; };
54  return 1 + (new Nirk);
55}
56
57function testEval() {
58  eval("function Doo() { FAIL; }; Doo();");
59}
60
61function testNestedEval() {
62  var x = "FAIL";
63  eval("function Outer() { eval('function Inner() { eval(x); }'); Inner(); }; Outer();");
64}
65
66function testEvalWithSourceURL() {
67  eval("function Doo() { FAIL; }; Doo();\n//@ sourceURL=res://name");
68}
69
70function 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
76function testValue() {
77  Number.prototype.causeError = function () { FAIL; };
78  (1).causeError();
79}
80
81function testConstructor() {
82  function Plonk() { FAIL; }
83  new Plonk();
84}
85
86function 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
93function testAnonymousMethod() {
94  (function () { FAIL }).call([1, 2, 3]);
95}
96
97function CustomError(message, stripPoint) {
98  this.message = message;
99  Error.captureStackTrace(this, stripPoint);
100}
101
102CustomError.prototype.toString = function () {
103  return "CustomError: " + this.message;
104};
105
106function testDefaultCustomError() {
107  throw new CustomError("hep-hey", undefined);
108}
109
110function testStrippedCustomError() {
111  throw new CustomError("hep-hey", CustomError);
112}
113
114// Utility function for testing that the expected strings occur
115// in the stack trace produced when running the given function.
116function testTrace(name, fun, expected, unexpected) {
117  var threw = false;
118  try {
119    fun();
120  } catch (e) {
121    for (var i = 0; i < expected.length; i++) {
122      assertTrue(e.stack.indexOf(expected[i]) != -1,
123                 name + " doesn't contain expected[" + i + "] stack = " + e.stack);
124    }
125    if (unexpected) {
126      for (var i = 0; i < unexpected.length; i++) {
127        assertEquals(e.stack.indexOf(unexpected[i]), -1,
128                     name + " contains unexpected[" + i + "]");
129      }
130    }
131    threw = true;
132  }
133  assertTrue(threw, name + " didn't throw");
134}
135
136// Test that the error constructor is not shown in the trace
137function testCallerCensorship() {
138  var threw = false;
139  try {
140    FAIL;
141  } catch (e) {
142    assertEquals(-1, e.stack.indexOf('at new ReferenceError'),
143                 "CallerCensorship contained new ReferenceError");
144    threw = true;
145  }
146  assertTrue(threw, "CallerCensorship didn't throw");
147}
148
149// Test that the explicit constructor call is shown in the trace
150function testUnintendedCallerCensorship() {
151  var threw = false;
152  try {
153    new ReferenceError({
154      toString: function () {
155        FAIL;
156      }
157    });
158  } catch (e) {
159    assertTrue(e.stack.indexOf('at new ReferenceError') != -1,
160               "UnintendedCallerCensorship didn't contain new ReferenceError");
161    threw = true;
162  }
163  assertTrue(threw, "UnintendedCallerCensorship didn't throw");
164}
165
166// If an error occurs while the stack trace is being formatted it should
167// be handled gracefully.
168function testErrorsDuringFormatting() {
169  function Nasty() { }
170  Nasty.prototype.foo = function () { throw new RangeError(); };
171  var n = new Nasty();
172  n.__defineGetter__('constructor', function () { CONS_FAIL; });
173  var threw = false;
174  try {
175    n.foo();
176  } catch (e) {
177    threw = true;
178    assertTrue(e.stack.indexOf('<error: ReferenceError') != -1,
179               "ErrorsDuringFormatting didn't contain error: ReferenceError");
180  }
181  assertTrue(threw, "ErrorsDuringFormatting didn't throw");
182  threw = false;
183  // Now we can't even format the message saying that we couldn't format
184  // the stack frame.  Put that in your pipe and smoke it!
185  ReferenceError.prototype.toString = function () { NESTED_FAIL; };
186  try {
187    n.foo();
188  } catch (e) {
189    threw = true;
190    assertTrue(e.stack.indexOf('<error>') != -1,
191               "ErrorsDuringFormatting didn't contain <error>");
192  }
193  assertTrue(threw, "ErrorsDuringFormatting didnt' throw (2)");
194}
195
196
197// Poisonous object that throws a reference error if attempted converted to
198// a primitive values.
199var thrower = { valueOf: function() { FAIL; },
200                toString: function() { FAIL; } };
201
202// Tests that a native constructor function is included in the
203// stack trace.
204function testTraceNativeConstructor(nativeFunc) {
205  var nativeFuncName = nativeFunc.name;
206  try {
207    new nativeFunc(thrower);
208    assertUnreachable(nativeFuncName);
209  } catch (e) {
210    assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
211  }
212}
213
214// Tests that a native conversion function is included in the
215// stack trace.
216function testTraceNativeConversion(nativeFunc) {
217  var nativeFuncName = nativeFunc.name;
218  try {
219    nativeFunc(thrower);
220    assertUnreachable(nativeFuncName);
221  } catch (e) {
222    assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
223  }
224}
225
226
227function testOmittedBuiltin(throwing, omitted) {
228  try {
229    throwing();
230    assertUnreachable(omitted);
231  } catch (e) {
232    assertTrue(e.stack.indexOf(omitted) < 0, omitted);
233  }
234}
235
236
237testTrace("testArrayNative", testArrayNative, ["Array.map (native)"]);
238testTrace("testNested", testNested, ["at one", "at two", "at three"]);
239testTrace("testMethodNameInference", testMethodNameInference, ["at Foo.bar"]);
240testTrace("testImplicitConversion", testImplicitConversion, ["at Nirk.valueOf"]);
241testTrace("testEval", testEval, ["at Doo (eval at testEval"]);
242testTrace("testNestedEval", testNestedEval, ["eval at Inner (eval at Outer"]);
243testTrace("testEvalWithSourceURL", testEvalWithSourceURL,
244    [ "at Doo (res://name:1:18)" ]);
245testTrace("testNestedEvalWithSourceURL", testNestedEvalWithSourceURL,
246    [" at Inner (res://inner-eval:1:20)",
247     " at Outer (res://outer-eval:1:37)"]);
248testTrace("testValue", testValue, ["at Number.causeError"]);
249testTrace("testConstructor", testConstructor, ["new Plonk"]);
250testTrace("testRenamedMethod", testRenamedMethod, ["Wookie.a$b$c$d [as d]"]);
251testTrace("testAnonymousMethod", testAnonymousMethod, ["Array.<anonymous>"]);
252testTrace("testDefaultCustomError", testDefaultCustomError,
253    ["hep-hey", "new CustomError"],
254    ["collectStackTrace"]);
255testTrace("testStrippedCustomError", testStrippedCustomError, ["hep-hey"],
256    ["new CustomError", "collectStackTrace"]);
257testCallerCensorship();
258testUnintendedCallerCensorship();
259testErrorsDuringFormatting();
260
261testTraceNativeConversion(String);  // Does ToString on argument.
262testTraceNativeConversion(Number);  // Does ToNumber on argument.
263testTraceNativeConversion(RegExp);  // Does ToString on argument.
264
265testTraceNativeConstructor(String);  // Does ToString on argument.
266testTraceNativeConstructor(Number);  // Does ToNumber on argument.
267testTraceNativeConstructor(RegExp);  // Does ToString on argument.
268testTraceNativeConstructor(Date);    // Does ToNumber on argument.
269
270// Omitted because QuickSort has builtins object as receiver, and is non-native
271// builtin.
272testOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) {
273                                                     (b < a) - (a < b); });
274                   }, "QuickSort");
275
276// Omitted because ADD from runtime.js is non-native builtin.
277testOmittedBuiltin(function(){ thrower + 2; }, "ADD");