javascript/webdriver/test/stacktrace_test.html - external/selenium - Git at Google

 <!DOCTYPE html>
 <!--
 Copyright 2012 Selenium comitters
 Copyright 2012 Software Freedom Conservancy

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
 -->
 <title>stacktrace_test</title>
 <script src="test_bootstrap.js"></script>
 <script>
   goog.require('bot.Error');
   goog.require('bot.ErrorCode');
   goog.require('goog.string');
   goog.require('goog.testing.ExpectedFailures');
   goog.require('goog.testing.JsUnitException');
   goog.require('goog.testing.PropertyReplacer');
   goog.require('goog.testing.StrictMock');
   goog.require('goog.testing.jsunit');
   goog.require('goog.testing.stacktrace');
   goog.require('goog.userAgent');
   goog.require('webdriver.stacktrace');
 </script>
 <script>
 var expectedFailures;
 var stubs;

 function setUpPage() {
   expectedFailures = new goog.testing.ExpectedFailures();
   stubs = new goog.testing.PropertyReplacer();
 }

 function tearDown() {
   expectedFailures.handleTearDown();
   stubs.reset();
 }


 function assertStackFrame(message, frameOrFrameString, expectedFrame) {
   var frame = frameOrFrameString;
   if (goog.isString(frame)) {
     frame = webdriver.stacktrace.parseStackFrame_(frame);
     assertNotNull(message + '\nunable to parse frame: ' + frameOrFrameString,
         frame);
   }
   var diff = [];
   for (var prop in expectedFrame) {
     if (goog.isString(expectedFrame[prop]) &&
         frame[prop] !== expectedFrame[prop]) {
       diff.push([
         prop, ': <', expectedFrame[prop], '> !== <', frame[prop], '>'
       ].join(''));
     }
   }
   if (diff.length) {
     fail(message +
         '\nfor:      <' + frameOrFrameString + '>' +
         '\nexpected: <' + expectedFrame + '>' +
         '\nbut was:  <' + frame + '>' +
         '\n    ' +
         diff.join('\n    '));
   }
 }

 function testParseStackFrameInV8() {
   assertStackFrame('exception name only (node v0.8)',
       '    at Error (unknown source)',
       new webdriver.stacktrace.Frame_('', 'Error', '', 'unknown source'));

   assertStackFrame('exception name only (chrome v22)',
       '    at Error (<anonymous>)',
       new webdriver.stacktrace.Frame_('', 'Error', '', '<anonymous>'));

   assertStackFrame('context object + function name + url',
       '    at Object.assert (file:///.../asserts.js:29:10)',
       new webdriver.stacktrace.Frame_('Object', 'assert', '',
           'file:///.../asserts.js:29:10'));

   assertStackFrame('context object + function name + file',
       '    at Object.assert (asserts.js:29:10)',
       new webdriver.stacktrace.Frame_('Object', 'assert', '',
           'asserts.js:29:10'));

   assertStackFrame('context object + anonymous function + file',
       '    at Interface.<anonymous> (repl.js:182:12)',
       new webdriver.stacktrace.Frame_('Interface', '<anonymous>', '',
           'repl.js:182:12'));

   assertStackFrame('url only',
       '    at http://www.example.com/jsunit.js:117:13',
       new webdriver.stacktrace.Frame_('', '', '',
           'http://www.example.com/jsunit.js:117:13'));

   assertStackFrame('file only',
       '    at repl:1:57',
       new webdriver.stacktrace.Frame_('', '', '', 'repl:1:57'));

   assertStackFrame('function alias',
       '    at [object Object].exec [as execute] (file:///foo)',
       new webdriver.stacktrace.Frame_('[object Object]', 'exec',
           'execute', 'file:///foo'));

   assertStackFrame('constructor call',
       '    at new Class (file:///foo)',
       new webdriver.stacktrace.Frame_('new ', 'Class', '', 'file:///foo'));

   assertStackFrame('object property constructor call',
       '    at new [object Object].foo (repl:1:2)',
       new webdriver.stacktrace.Frame_('new [object Object]', 'foo', '',
           'repl:1:2'));

   assertStackFrame('namespaced constructor call',
       '    at new foo.bar.Class (foo:1:2)',
       new webdriver.stacktrace.Frame_('new foo.bar', 'Class', '', 'foo:1:2'));

   assertStackFrame('anonymous constructor call',
       '    at new <anonymous> (file:///foo)',
       new webdriver.stacktrace.Frame_('new ', '<anonymous>', '',
           'file:///foo'));

   assertStackFrame('native function call',
       '    at Array.forEach (native)',
       new webdriver.stacktrace.Frame_('Array', 'forEach', '', 'native'));

   assertStackFrame('eval',
       '    at foo (eval at file://bar)',
       new webdriver.stacktrace.Frame_('', 'foo', '', 'eval at file://bar'));

   assertStackFrame('nested anonymous eval',
       '    at eval (eval at <anonymous> (unknown source), <anonymous>:2:7)',
       new webdriver.stacktrace.Frame_('', 'eval', '',
           'eval at <anonymous> (unknown source), <anonymous>:2:7'));
 }

 function testParseStackFrameInOpera() {
   assertStackFrame('empty frame', '@', webdriver.stacktrace.ANONYMOUS_FRAME_);

   assertStackFrame('javascript path only',
       '@javascript:console.log(Error().stack):1',
       new webdriver.stacktrace.Frame_('', '', '',
           'javascript:console.log(Error().stack):1'));

   assertStackFrame('path only',
       '@file:///foo:42',
       new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42'));

   // (function go() { throw Error() })()
   // var c = go; c()
   assertStackFrame('name and empty path',
       'go([arguments not available])@',
       new webdriver.stacktrace.Frame_('', 'go', '', ''));

   assertStackFrame('name and path',
       'go([arguments not available])@file:///foo:42',
       new webdriver.stacktrace.Frame_('', 'go', '', 'file:///foo:42'));

   // (function() { throw Error() })()
   assertStackFrame('anonymous function',
       '<anonymous function>([arguments not available])@file:///foo:42',
       new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42'));

   // var b = {foo: function() { throw Error() }}
   assertStackFrame('object literal function',
       '<anonymous function: foo>()@file:///foo:42',
       new webdriver.stacktrace.Frame_('', 'foo', '', 'file:///foo:42'));

   // var c = {}; c.foo = function() { throw Error() }
   assertStackFrame('named object literal function',
       '<anonymous function: c.foo>()@file:///foo:42',
       new webdriver.stacktrace.Frame_('c', 'foo', '', 'file:///foo:42'));

   assertStackFrame('prototype function',
       '<anonymous function: Foo.prototype.bar>()@',
       new webdriver.stacktrace.Frame_('Foo.prototype', 'bar', '', ''));

   assertStackFrame('namespaced prototype function',
       '<anonymous function: goog.Foo.prototype.bar>()@',
       new webdriver.stacktrace.Frame_(
           'goog.Foo.prototype', 'bar', '', ''));
 }

 function testParseClosureCanonicalStackFrame() {
   assertStackFrame('unknown frame', '> (unknown)',
       webdriver.stacktrace.ANONYMOUS_FRAME_);
   assertStackFrame('anonymous frame', '> anonymous',
       webdriver.stacktrace.ANONYMOUS_FRAME_);

   assertStackFrame('name only', '> foo',
       new webdriver.stacktrace.Frame_('', 'foo', '', ''));

   assertStackFrame('name and path', '> foo at http://x:123',
       new webdriver.stacktrace.Frame_('', 'foo', '', 'http://x:123'));

   assertStackFrame('anonymous function with path',
       '> anonymous at file:///x/y/z',
       new webdriver.stacktrace.Frame_('', 'anonymous', '', 'file:///x/y/z'));

   assertStackFrame('anonymous function with v8 path',
       '> anonymous at /x/y/z:12:34',
       new webdriver.stacktrace.Frame_('', 'anonymous', '', '/x/y/z:12:34'));

   assertStackFrame('context and name only',
       '> foo.bar', new webdriver.stacktrace.Frame_('foo', 'bar', '', ''));

   assertStackFrame('name and alias',
       '> foo [as bar]', new webdriver.stacktrace.Frame_('', 'foo', 'bar', ''));

   assertStackFrame('context, name, and alias',
       '> foo.bar [as baz]',
       new webdriver.stacktrace.Frame_('foo', 'bar', 'baz', ''));

   assertStackFrame('path only', '> http://x:123',
       new webdriver.stacktrace.Frame_('', '', '', 'http://x:123'));

   assertStackFrame('name and arguments',
       '> foo(arguments)', new webdriver.stacktrace.Frame_('', 'foo', '', ''));

   assertStackFrame('full frame',
       '> foo.bar(123, "abc") [as baz] at http://x:123',
       new webdriver.stacktrace.Frame_('foo', 'bar', 'baz', 'http://x:123'));

   assertStackFrame('name and url with sub-domain',
       '> foo at http://x.y.z:80/path:1:2',
       new webdriver.stacktrace.Frame_('', 'foo', '',
           'http://x.y.z:80/path:1:2'));

   assertStackFrame('name and url with sub-domain',
       '> foo.bar.baz at http://x.y.z:80/path:1:2',
       new webdriver.stacktrace.Frame_('foo.bar', 'baz', '',
           'http://x.y.z:80/path:1:2'));
 }

 // All test strings are parsed with the conventional and long
 // frame algorithms.
 function testParseStackFrameInFirefox() {
   var frameString = 'Error("Assertion failed")@:0';
   var frame = webdriver.stacktrace.parseStackFrame_(frameString);
   var expected = new webdriver.stacktrace.Frame_('', 'Error', '', '');
   assertObjectEquals('function name + arguments', expected, frame);

   frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
   assertObjectEquals('function name + arguments', expected, frame);

   frameString = '()@file:///foo:42';
   frame = webdriver.stacktrace.parseStackFrame_(frameString);
   expected = new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42');
   assertObjectEquals('anonymous function', expected, frame);

   frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
   assertObjectEquals('anonymous function', expected, frame);

   frameString = '@javascript:alert(0)';
   frame = webdriver.stacktrace.parseStackFrame_(frameString);
   expected = new webdriver.stacktrace.Frame_('', '', '', 'javascript:alert(0)');
   assertObjectEquals('anonymous function', expected, frame);

   frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
   assertObjectEquals('anonymous function', expected, frame);
 }

 function testStringRepresentation() {
   var frame = new webdriver.stacktrace.Frame_('window', 'foo', 'bar',
       'http://x?a=1&b=2:1');
   assertEquals('    at window.foo [as bar] (http://x?a=1&b=2:1)',
       frame.toString());

   frame = new webdriver.stacktrace.Frame_('', 'Error', '', '');
   assertEquals('    at Error (<anonymous>)', frame.toString());

   assertEquals('    at <anonymous>',
       webdriver.stacktrace.ANONYMOUS_FRAME_.toString());

   frame = new webdriver.stacktrace.Frame_('', '', '', 'http://x:123');
   assertEquals('    at http://x:123', frame.toString());

   frame = new webdriver.stacktrace.Frame_('foo', 'bar', '', 'http://x:123');
   assertEquals('    at foo.bar (http://x:123)', frame.toString());

   frame = new webdriver.stacktrace.Frame_('new ', 'Foo', '', 'http://x:123');
   assertEquals('    at new Foo (http://x:123)', frame.toString());

   frame = new webdriver.stacktrace.Frame_('new foo', 'Bar', '', '');
   assertEquals('    at new foo.Bar (<anonymous>)', frame.toString());
 }

 // Create a stack trace string with one modest record and one long record,
 // Verify that all frames are parsed. The length of the long arg is set
 // to blow Firefox 3x's stack if put through a RegExp.
 function testParsingLongStackTrace() {
   var longArg = goog.string.buildString(
       '(', goog.string.repeat('x', 1000000), ')');
   var stackTrace = goog.string.buildString(
       'shortFrame()@:0\n',
       'longFrame',
       longArg,
       '@http://google.com/somescript:0\n');
   var error = {stack: stackTrace};
   var frames = webdriver.stacktrace.parse(error);
   assertEquals('number of returned frames', 2, frames.length);
   var expected = new webdriver.stacktrace.Frame_('', 'shortFrame', '', '');
   assertStackFrame('short frame', frames[0], expected);

   expected = new webdriver.stacktrace.Frame_(
       '', 'longFrame', '', 'http://google.com/somescript:0');
   assertStackFrame('exception name only', frames[1], expected);
 }

 function testRemovesV8MessageHeaderBeforeParsingStack() {
   var errorStub = {
     toString: function() { return 'Error: foo'; },
     stack:
         'Error: foo\n' +
         '    at Color.red (http://x:1234)\n' +
         '    at Foo.bar (http://y:5678)'
   };

   var frames = webdriver.stacktrace.parse(errorStub);
   assertEquals(2, frames.length);
   assertEquals('    at Color.red (http://x:1234)', frames[0].toString());
   assertEquals('    at Foo.bar (http://y:5678)', frames[1].toString());
 }

 function testCanParseClosureJsUnitExceptions() {
   stubs.set(goog.testing.stacktrace, 'get', function() {
     return '> Color.red at http://x:1234\n' +
            '> Foo.bar at http://y:5678';
   });

   var error = new goog.testing.JsUnitException('stub');
   stubs.reset();

   var frames = webdriver.stacktrace.parse(error);
   assertEquals(2, frames.length);
   assertEquals('    at Color.red (http://x:1234)', frames[0].toString());
   assertEquals('    at Foo.bar (http://y:5678)', frames[1].toString());
 }

 function testFormattingAV8StyleError() {
   var errorStub = {
     toString: function() { return 'Error: foo'; },
     stack:
         'Error: foo\n' +
         '    at Color.red (http://x:1234)\n' +
         '    at Foo.bar (http://y:5678)'
   };

   var ret = webdriver.stacktrace.format(errorStub);
   assertEquals(errorStub, ret);
   assertEquals([
     'Error: foo',
     '    at Color.red (http://x:1234)',
     '    at Foo.bar (http://y:5678)'
   ].join('\n'), ret.stack);
 }

 function testFormattingAFirefoxStyleError() {
   var errorStub = {
     toString: function() { return 'Error: boom'; },
     stack:
         'foo@file:///foo/foo.js:1\n' +
         '@file:///bar/bar.js:1'
   };

   var ret = webdriver.stacktrace.format(errorStub);
   assertEquals(errorStub, ret);
   assertEquals([
     'Error: boom',
     '    at foo (file:///foo/foo.js:1)',
     '    at file:///bar/bar.js:1'
   ].join('\n'), ret.stack);
 }

 function testInsertsAnAnonymousFrameWhenUnableToParse() {
   var errorStub = {
     toString: function() { return 'Error: boom'; },
     stack:
         'foo@file:///foo/foo.js:1\n' +
         'this is unparsable garbage\n' +
         '@file:///bar/bar.js:1'
   };

   var ret = webdriver.stacktrace.format(errorStub);
   assertEquals(errorStub, ret);
   assertEquals([
     'Error: boom',
     '    at foo (file:///foo/foo.js:1)',
     '    at <anonymous>',
     '    at file:///bar/bar.js:1'
   ].join('\n'), ret.stack);
 }

 function testFormattingBotErrors() {
   var error = new bot.Error(bot.ErrorCode.NO_SUCH_ELEMENT, 'boom');
   var expectedStack = [
     'NoSuchElementError: boom',
     '    at Color.red (http://x:1234)',
     '    at Foo.bar (http://y:5678)'
   ].join('\n');
   error.stack = expectedStack;

   var ret = webdriver.stacktrace.format(error);
   assertEquals(ret, error);
   assertEquals(expectedStack, error.stack);
 }
 </script>
	<!DOCTYPE html>
	<!--
	Copyright 2012 Selenium comitters
	Copyright 2012 Software Freedom Conservancy

	Licensed under the Apache License, Version 2.0 (the "License");
	you may not use this file except in compliance with the License.
	You may obtain a copy of the License at

	http://www.apache.org/licenses/LICENSE-2.0

	Unless required by applicable law or agreed to in writing, software
	distributed under the License is distributed on an "AS IS" BASIS,
	WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	See the License for the specific language governing permissions and
	limitations under the License.
	-->
	<title>stacktrace_test</title>
	<script src="test_bootstrap.js"></script>
	<script>
	goog.require('bot.Error');
	goog.require('bot.ErrorCode');
	goog.require('goog.string');
	goog.require('goog.testing.ExpectedFailures');
	goog.require('goog.testing.JsUnitException');
	goog.require('goog.testing.PropertyReplacer');
	goog.require('goog.testing.StrictMock');
	goog.require('goog.testing.jsunit');
	goog.require('goog.testing.stacktrace');
	goog.require('goog.userAgent');
	goog.require('webdriver.stacktrace');
	</script>
	<script>
	var expectedFailures;
	var stubs;

	function setUpPage() {
	expectedFailures = new goog.testing.ExpectedFailures();
	stubs = new goog.testing.PropertyReplacer();
	}

	function tearDown() {
	expectedFailures.handleTearDown();
	stubs.reset();
	}


	function assertStackFrame(message, frameOrFrameString, expectedFrame) {
	var frame = frameOrFrameString;
	if (goog.isString(frame)) {
	frame = webdriver.stacktrace.parseStackFrame_(frame);
	assertNotNull(message + '\nunable to parse frame: ' + frameOrFrameString,
	frame);
	}
	var diff = [];
	for (var prop in expectedFrame) {
	if (goog.isString(expectedFrame[prop]) &&
	frame[prop] !== expectedFrame[prop]) {
	diff.push([
	prop, ': <', expectedFrame[prop], '> !== <', frame[prop], '>'
	].join(''));
	}
	}
	if (diff.length) {
	fail(message +
	'\nfor: <' + frameOrFrameString + '>' +
	'\nexpected: <' + expectedFrame + '>' +
	'\nbut was: <' + frame + '>' +
	'\n ' +
	diff.join('\n '));
	}
	}

	function testParseStackFrameInV8() {
	assertStackFrame('exception name only (node v0.8)',
	' at Error (unknown source)',
	new webdriver.stacktrace.Frame_('', 'Error', '', 'unknown source'));

	assertStackFrame('exception name only (chrome v22)',
	' at Error (<anonymous>)',
	new webdriver.stacktrace.Frame_('', 'Error', '', '<anonymous>'));

	assertStackFrame('context object + function name + url',
	' at Object.assert (file:///.../asserts.js:29:10)',
	new webdriver.stacktrace.Frame_('Object', 'assert', '',
	'file:///.../asserts.js:29:10'));

	assertStackFrame('context object + function name + file',
	' at Object.assert (asserts.js:29:10)',
	new webdriver.stacktrace.Frame_('Object', 'assert', '',
	'asserts.js:29:10'));

	assertStackFrame('context object + anonymous function + file',
	' at Interface.<anonymous> (repl.js:182:12)',
	new webdriver.stacktrace.Frame_('Interface', '<anonymous>', '',
	'repl.js:182:12'));

	assertStackFrame('url only',
	' at http://www.example.com/jsunit.js:117:13',
	new webdriver.stacktrace.Frame_('', '', '',
	'http://www.example.com/jsunit.js:117:13'));

	assertStackFrame('file only',
	' at repl:1:57',
	new webdriver.stacktrace.Frame_('', '', '', 'repl:1:57'));

	assertStackFrame('function alias',
	' at [object Object].exec [as execute] (file:///foo)',
	new webdriver.stacktrace.Frame_('[object Object]', 'exec',
	'execute', 'file:///foo'));

	assertStackFrame('constructor call',
	' at new Class (file:///foo)',
	new webdriver.stacktrace.Frame_('new ', 'Class', '', 'file:///foo'));

	assertStackFrame('object property constructor call',
	' at new [object Object].foo (repl:1:2)',
	new webdriver.stacktrace.Frame_('new [object Object]', 'foo', '',
	'repl:1:2'));

	assertStackFrame('namespaced constructor call',
	' at new foo.bar.Class (foo:1:2)',
	new webdriver.stacktrace.Frame_('new foo.bar', 'Class', '', 'foo:1:2'));

	assertStackFrame('anonymous constructor call',
	' at new <anonymous> (file:///foo)',
	new webdriver.stacktrace.Frame_('new ', '<anonymous>', '',
	'file:///foo'));

	assertStackFrame('native function call',
	' at Array.forEach (native)',
	new webdriver.stacktrace.Frame_('Array', 'forEach', '', 'native'));

	assertStackFrame('eval',
	' at foo (eval at file://bar)',
	new webdriver.stacktrace.Frame_('', 'foo', '', 'eval at file://bar'));

	assertStackFrame('nested anonymous eval',
	' at eval (eval at <anonymous> (unknown source), <anonymous>:2:7)',
	new webdriver.stacktrace.Frame_('', 'eval', '',
	'eval at <anonymous> (unknown source), <anonymous>:2:7'));
	}

	function testParseStackFrameInOpera() {
	assertStackFrame('empty frame', '@', webdriver.stacktrace.ANONYMOUS_FRAME_);

	assertStackFrame('javascript path only',
	'@javascript:console.log(Error().stack):1',
	new webdriver.stacktrace.Frame_('', '', '',
	'javascript:console.log(Error().stack):1'));

	assertStackFrame('path only',
	'@file:///foo:42',
	new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42'));

	// (function go() { throw Error() })()
	// var c = go; c()
	assertStackFrame('name and empty path',
	'go([arguments not available])@',
	new webdriver.stacktrace.Frame_('', 'go', '', ''));

	assertStackFrame('name and path',
	'go([arguments not available])@file:///foo:42',
	new webdriver.stacktrace.Frame_('', 'go', '', 'file:///foo:42'));

	// (function() { throw Error() })()
	assertStackFrame('anonymous function',
	'<anonymous function>([arguments not available])@file:///foo:42',
	new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42'));

	// var b = {foo: function() { throw Error() }}
	assertStackFrame('object literal function',
	'<anonymous function: foo>()@file:///foo:42',
	new webdriver.stacktrace.Frame_('', 'foo', '', 'file:///foo:42'));

	// var c = {}; c.foo = function() { throw Error() }
	assertStackFrame('named object literal function',
	'<anonymous function: c.foo>()@file:///foo:42',
	new webdriver.stacktrace.Frame_('c', 'foo', '', 'file:///foo:42'));

	assertStackFrame('prototype function',
	'<anonymous function: Foo.prototype.bar>()@',
	new webdriver.stacktrace.Frame_('Foo.prototype', 'bar', '', ''));

	assertStackFrame('namespaced prototype function',
	'<anonymous function: goog.Foo.prototype.bar>()@',
	new webdriver.stacktrace.Frame_(
	'goog.Foo.prototype', 'bar', '', ''));
	}

	function testParseClosureCanonicalStackFrame() {
	assertStackFrame('unknown frame', '> (unknown)',
	webdriver.stacktrace.ANONYMOUS_FRAME_);
	assertStackFrame('anonymous frame', '> anonymous',
	webdriver.stacktrace.ANONYMOUS_FRAME_);

	assertStackFrame('name only', '> foo',
	new webdriver.stacktrace.Frame_('', 'foo', '', ''));

	assertStackFrame('name and path', '> foo at http://x:123',
	new webdriver.stacktrace.Frame_('', 'foo', '', 'http://x:123'));

	assertStackFrame('anonymous function with path',
	'> anonymous at file:///x/y/z',
	new webdriver.stacktrace.Frame_('', 'anonymous', '', 'file:///x/y/z'));

	assertStackFrame('anonymous function with v8 path',
	'> anonymous at /x/y/z:12:34',
	new webdriver.stacktrace.Frame_('', 'anonymous', '', '/x/y/z:12:34'));

	assertStackFrame('context and name only',
	'> foo.bar', new webdriver.stacktrace.Frame_('foo', 'bar', '', ''));

	assertStackFrame('name and alias',
	'> foo [as bar]', new webdriver.stacktrace.Frame_('', 'foo', 'bar', ''));

	assertStackFrame('context, name, and alias',
	'> foo.bar [as baz]',
	new webdriver.stacktrace.Frame_('foo', 'bar', 'baz', ''));

	assertStackFrame('path only', '> http://x:123',
	new webdriver.stacktrace.Frame_('', '', '', 'http://x:123'));

	assertStackFrame('name and arguments',
	'> foo(arguments)', new webdriver.stacktrace.Frame_('', 'foo', '', ''));

	assertStackFrame('full frame',
	'> foo.bar(123, "abc") [as baz] at http://x:123',
	new webdriver.stacktrace.Frame_('foo', 'bar', 'baz', 'http://x:123'));

	assertStackFrame('name and url with sub-domain',
	'> foo at http://x.y.z:80/path:1:2',
	new webdriver.stacktrace.Frame_('', 'foo', '',
	'http://x.y.z:80/path:1:2'));

	assertStackFrame('name and url with sub-domain',
	'> foo.bar.baz at http://x.y.z:80/path:1:2',
	new webdriver.stacktrace.Frame_('foo.bar', 'baz', '',
	'http://x.y.z:80/path:1:2'));
	}

	// All test strings are parsed with the conventional and long
	// frame algorithms.
	function testParseStackFrameInFirefox() {
	var frameString = 'Error("Assertion failed")@:0';
	var frame = webdriver.stacktrace.parseStackFrame_(frameString);
	var expected = new webdriver.stacktrace.Frame_('', 'Error', '', '');
	assertObjectEquals('function name + arguments', expected, frame);

	frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
	assertObjectEquals('function name + arguments', expected, frame);

	frameString = '()@file:///foo:42';
	frame = webdriver.stacktrace.parseStackFrame_(frameString);
	expected = new webdriver.stacktrace.Frame_('', '', '', 'file:///foo:42');
	assertObjectEquals('anonymous function', expected, frame);

	frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
	assertObjectEquals('anonymous function', expected, frame);

	frameString = '@javascript:alert(0)';
	frame = webdriver.stacktrace.parseStackFrame_(frameString);
	expected = new webdriver.stacktrace.Frame_('', '', '', 'javascript:alert(0)');
	assertObjectEquals('anonymous function', expected, frame);

	frame = webdriver.stacktrace.parseLongFirefoxFrame_(frameString);
	assertObjectEquals('anonymous function', expected, frame);
	}

	function testStringRepresentation() {
	var frame = new webdriver.stacktrace.Frame_('window', 'foo', 'bar',
	'http://x?a=1&b=2:1');
	assertEquals(' at window.foo [as bar] (http://x?a=1&b=2:1)',
	frame.toString());

	frame = new webdriver.stacktrace.Frame_('', 'Error', '', '');
	assertEquals(' at Error (<anonymous>)', frame.toString());

	assertEquals(' at <anonymous>',
	webdriver.stacktrace.ANONYMOUS_FRAME_.toString());

	frame = new webdriver.stacktrace.Frame_('', '', '', 'http://x:123');
	assertEquals(' at http://x:123', frame.toString());

	frame = new webdriver.stacktrace.Frame_('foo', 'bar', '', 'http://x:123');
	assertEquals(' at foo.bar (http://x:123)', frame.toString());

	frame = new webdriver.stacktrace.Frame_('new ', 'Foo', '', 'http://x:123');
	assertEquals(' at new Foo (http://x:123)', frame.toString());

	frame = new webdriver.stacktrace.Frame_('new foo', 'Bar', '', '');
	assertEquals(' at new foo.Bar (<anonymous>)', frame.toString());
	}

	// Create a stack trace string with one modest record and one long record,
	// Verify that all frames are parsed. The length of the long arg is set
	// to blow Firefox 3x's stack if put through a RegExp.
	function testParsingLongStackTrace() {
	var longArg = goog.string.buildString(
	'(', goog.string.repeat('x', 1000000), ')');
	var stackTrace = goog.string.buildString(
	'shortFrame()@:0\n',
	'longFrame',
	longArg,
	'@http://google.com/somescript:0\n');
	var error = {stack: stackTrace};
	var frames = webdriver.stacktrace.parse(error);
	assertEquals('number of returned frames', 2, frames.length);
	var expected = new webdriver.stacktrace.Frame_('', 'shortFrame', '', '');
	assertStackFrame('short frame', frames[0], expected);

	expected = new webdriver.stacktrace.Frame_(
	'', 'longFrame', '', 'http://google.com/somescript:0');
	assertStackFrame('exception name only', frames[1], expected);
	}

	function testRemovesV8MessageHeaderBeforeParsingStack() {
	var errorStub = {
	toString: function() { return 'Error: foo'; },
	stack:
	'Error: foo\n' +
	' at Color.red (http://x:1234)\n' +
	' at Foo.bar (http://y:5678)'
	};

	var frames = webdriver.stacktrace.parse(errorStub);
	assertEquals(2, frames.length);
	assertEquals(' at Color.red (http://x:1234)', frames[0].toString());
	assertEquals(' at Foo.bar (http://y:5678)', frames[1].toString());
	}

	function testCanParseClosureJsUnitExceptions() {
	stubs.set(goog.testing.stacktrace, 'get', function() {
	return '> Color.red at http://x:1234\n' +
	'> Foo.bar at http://y:5678';
	});

	var error = new goog.testing.JsUnitException('stub');
	stubs.reset();

	var frames = webdriver.stacktrace.parse(error);
	assertEquals(2, frames.length);
	assertEquals(' at Color.red (http://x:1234)', frames[0].toString());
	assertEquals(' at Foo.bar (http://y:5678)', frames[1].toString());
	}

	function testFormattingAV8StyleError() {
	var errorStub = {
	toString: function() { return 'Error: foo'; },
	stack:
	'Error: foo\n' +
	' at Color.red (http://x:1234)\n' +
	' at Foo.bar (http://y:5678)'
	};

	var ret = webdriver.stacktrace.format(errorStub);
	assertEquals(errorStub, ret);
	assertEquals([
	'Error: foo',
	' at Color.red (http://x:1234)',
	' at Foo.bar (http://y:5678)'
	].join('\n'), ret.stack);
	}

	function testFormattingAFirefoxStyleError() {
	var errorStub = {
	toString: function() { return 'Error: boom'; },
	stack:
	'foo@file:///foo/foo.js:1\n' +
	'@file:///bar/bar.js:1'
	};

	var ret = webdriver.stacktrace.format(errorStub);
	assertEquals(errorStub, ret);
	assertEquals([
	'Error: boom',
	' at foo (file:///foo/foo.js:1)',
	' at file:///bar/bar.js:1'
	].join('\n'), ret.stack);
	}

	function testInsertsAnAnonymousFrameWhenUnableToParse() {
	var errorStub = {
	toString: function() { return 'Error: boom'; },
	stack:
	'foo@file:///foo/foo.js:1\n' +
	'this is unparsable garbage\n' +
	'@file:///bar/bar.js:1'
	};

	var ret = webdriver.stacktrace.format(errorStub);
	assertEquals(errorStub, ret);
	assertEquals([
	'Error: boom',
	' at foo (file:///foo/foo.js:1)',
	' at <anonymous>',
	' at file:///bar/bar.js:1'
	].join('\n'), ret.stack);
	}

	function testFormattingBotErrors() {
	var error = new bot.Error(bot.ErrorCode.NO_SUCH_ELEMENT, 'boom');
	var expectedStack = [
	'NoSuchElementError: boom',
	' at Color.red (http://x:1234)',
	' at Foo.bar (http://y:5678)'
	].join('\n');
	error.stack = expectedStack;

	var ret = webdriver.stacktrace.format(error);
	assertEquals(ret, error);
	assertEquals(expectedStack, error.stack);
	}
	</script>