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1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN">
2 <html>
3 <head>
4 <title>JSCoverage - code coverage for JavaScript</title>
5 <link rel="stylesheet" type="text/css" href="reset-fonts-grids.css">
6 <link rel="stylesheet" type="text/css" href="style.css">
7 </head>
8 <body>
9 <div id="doc3" class="yui-t5">
10 <div id="hd"><h1><span class="h1">JSCoverage</span><br><span class="tag">code coverage for JavaScript</span></h1></div>
11 <div id="bd">
12 <div id="yui-main">
13 <div id="jscoverage-main" class="yui-b">
14 <p>
15 JSCoverage is a tool that measures code coverage for
16 JavaScript programs.
17 </p>
18 <p>
19 <dfn>Code coverage</dfn> statistics show which lines of a program have
20 been executed (and which have been missed). This information is useful
21 for constructing comprehensive test suites (hence, it is often called
22 <dfn>test coverage</dfn>).
23 </p>
24 <p>
25 JSCoverage works by instrumenting the JavaScript code used in web
26 pages. Code coverage statistics are collected while the instrumented
27 JavaScript code is executed in a web browser.
28 </p>
29 <p>
30 JSCoverage supports the complete language syntax described in the
31 <cite>ECMAScript Language Specification</cite> (ECMA-262, 3rd edition).
32 JSCoverage works with any modern standards-compliant web browser -
33 including Internet Explorer (IE 6, 7, and 8), Firefox,
34 Opera, Safari, and Google Chrome - on Microsoft Windows and GNU/Linux.
35 </p>
36 <p>
37 JSCoverage is free software, distributed under the
38 <a href="license.html">GNU General Public License version 2</a>.
39 </p>
40
41 <h2>Latest News <a href="http://siliconforks.com/jscoverage/news.xml" type="application/rss+xml" title="RSS feed for JSCoverage"><img src="feed-icon-14x14.png" alt="RSS feed"></a></h2>
42
43 <h3><a name="20100923">September 23, 2010 - JSCoverage 0.5.1</a></h3>
44 <p>
45 JSCoverage 0.5.1 is available for <a href="http://siliconforks.com/jscoverage/download.html">download</a>.
46 </p>
47 <p>
48 This release contains several bug fixes and improvements:
49 </p>
50 <ul class="list">
51 <li>
52 Probably the largest change is in the documentation: the manual no
53 longer recommends using <code>file:</code> URLs.
54 It is recommended that an HTTP server be used instead.
55 (See the <a href="manual.html">manual</a> for details.)
56 The JSCoverage user interface now displays a warning when used with
57 <code>file:</code> URLs.
58 </li>
59 <li>
60 The <code>--verbose</code> option to <code>jscoverage</code> now
61 produces better output.
62 </li>
63 <li>
64 Report loading is now faster (thanks to Klaus).
65 </li>
66 <li>
67 Some bugs involving augmented object prototypes were fixed.
68 </li>
69 <li>
70 JavaScript instrumentation was improved to work better in non-browser
71 environments.
72 </li>
73 <li>
74 Some cases where permission errors were occurring in inverted mode were
75 fixed (thanks to tn).
76 </li>
77 <li>
78 Previously, if <code>jscoverage-server</code> was started with the
79 option <code>--ip-address=<var>A</var></code>, where <var>A</var> was a
80 specific IP address, it was impossible to shut it down with
81 <code>jscoverage-server --shutdown</code>.
82 This should be possible now by running
83 <code>jscoverage-server --shutdown --ip-address=<var>A</var></code>
84 from the same machine.
85 </li>
86 <li>
87 The test suite has been made more robust.
88 </li>
89 </ul>
90
91 <h3><a name="20100426">April 26, 2010 - New blog</a></h3>
92 <p>
93 If you would like to see some case studies showing how to use JSCoverage in practice, take a look at the new <a href="http://blog.siliconforks.com/">blog</a>.
94 This week there will be a series of articles about using JSCoverage with various JavaScript testing frameworks.
95 The <a href="http://blog.siliconforks.com/2010/04/26/jscoverage-scriptaculous/">first article</a> looks at using JSCoverage with the <a href="http://script.aculo.us">script.aculo.us</a> test suite.
96 </p>
97
98 <h3><a name="20100424">April 24, 2010 - JSCoverage 0.5</a></h3>
99 <p>
100 JSCoverage 0.5 is available for <a href="http://siliconforks.com/jscoverage/download.html">download</a>.
101 </p>
102 <p>
103 This release contains a number of new features and bug fixes:
104 </p>
105 <ul class="list">
106 <li>
107 A new mode of operation, called "window mode", allows you to run code in a new browser window (or tab).
108 </li>
109 <li>
110 Code coverage statistics can now be generated for applications based on
111 the Mozilla platform using the <code>--mozilla</code> option (thanks to
112 Murali Nandigama for help creating this).
113 </li>
114 <li>
115 The method used to calculate overall percentage code coverage for all
116 files has changed. Previously, the calculation was done using an
117 unweighted average: each file's percentage code coverage contributed
118 equally to the total, regardless of the number of lines of code in the
119 file. Now, the calculation is done using a weighted average. This
120 fixes
121 <a href="http://siliconforks.com/jscoverage/bugs/6">bug #6</a> (thanks to
122 Liu Cougar).
123 </li>
124 <li>
125 Contiguous lines in the "Missing" column are now grouped together (thanks to
126 Liu Cougar).
127 </li>
128 <li>
129 The "Source" tab is no longer empty when code being tested throws an
130 uncaught exception
131 (fixing <a href="http://siliconforks.com/jscoverage/bugs/5">bug #5</a>)
132 </li>
133 <li>
134 Previously, certain uses of the <code>new</code> operator were
135 instrumented incorrectly; this has now been fixed
136 (thanks to Guillaume Lung).
137 </li>
138 <li>
139 The <code>jscoverage-server</code> program now allows more characters in
140 URLs (thanks to Guillaume Lung).
141 </li>
142 <li>
143 The <code>jscoverage-server</code> program now handles HTTP headers with
144 empty values (thanks to Velo).
145 </li>
146 <li>
147 The <code>jscoverage</code> program now refuses to instrument code which
148 has already been instrumented (thanks to Velo).
149 </li>
150 <li>
151 URLs containing spaces now work correctly (thanks to Igor Papkov).
152 </li>
153 <li>
154 Previously, on Windows, the <code>jscoverage</code> program
155 was unable to instrument a directory in a drive root; this has now been
156 fixed.
157 </li>
158 <li>
159 Encoded URLs are now handled better in the query string.
160 </li>
161 <li>
162 A limitation of 65,535 lines per file and 65,535 characters per line has
163 been removed.
164 </li>
165 <li>
166 Floating-point numbers are now handled with improved precision.
167 </li>
168 <li>
169 The <code>jscoverage-server</code> program can no longer bind to the same port multiple times on Windows.
170 </li>
171 <li>
172 Some bugs in <code>jscoverage-server</code>'s handling of the "chunked"
173 Transfer-Encoding have been fixed.
174 </li>
175 <li>
176 Compilation under Cygwin now uses the <code>-mno-cygwin</code> flag.
177 </li>
178 <li>
179 The wire format used for submitting coverage reports for storage by
180 <code>jscoverage-server</code> has changed. (This change will not have
181 any visible effects for most users; it will only be of interest to those
182 who have written code which parses that format.)
183 </li>
184 </ul>
185
186 <p>
187 <a href="news.html">All news items...</a>
188 </p>
189 </div>
190 </div>
191 <div id="jscoverage-sidebar" class="yui-b">
192 <ul>
193 <li>Home
194 <li><a href="news.html">News</a> <a href="http://siliconforks.com/jscoverage/news.xml" type="application/rss+xml" title="RSS feed for JSCoverage"><img src="feed-icon-14x14.png" alt="RSS feed"></a>
195 <li><a href="manual.html">Documentation</a>
196 <li><a href="demo.html">Demo</a>
197 <li><a href="http://siliconforks.com/jscoverage/download.html">Download</a>
198 <li><a href="faq.html">FAQ</a>
199 <li><a href="help.html">Help</a>
200 <li><a href="license.html">License</a>
201 <li><a href="links.html">Links</a>
202 <li><a href="users.html">Users</a>
203 <li><a href="http://siliconforks.com/jscoverage/bugs/">Bug tracker</a>
204 </ul>
205 </div>
206 </div>
207 <div id="ft">
208 <address>
209 Copyright &copy; 2007, 2008, 2009, 2010 <a href="http://siliconforks.com/"><img src="siliconforks-16x16.png" width="16" height="16" class="icon" alt="Silicon Forks"></a> <a href="http://siliconforks.com/">siliconforks.com</a><br>
210 <a href="mailto:jscoverage@siliconforks.com">jscoverage@siliconforks.com</a>
211 </address>
212 </div>
213 </div>
214 </body>
215 </html>

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