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<title>GNU LilyPond program usage: 1.2.5 Testing LilyPond</title>
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<a name="Testing-LilyPond"></a>
<h3 class="subsection">1.2.5 Testing LilyPond</h3>
<a name="testing"></a>
<p>LilyPond comes with an extensive suite that exercises the entire
program. This suite can be used to automatically check the impact of a
change. This is done as follows
</p>
<blockquote><pre class="example"><pre class="example">make test-baseline
<em>## apply your changes, compile</em>
make check
</pre></pre></blockquote>
<p>This will leave an HTML page ‘<tt>out/test-results/index.html</tt>’. This
page shows all the important differences that your change introduced,
whether in the layout, MIDI, performance or error reporting.
</p>
<p>To rerun tests, use
</p>
<blockquote><pre class="example"><pre class="example">make test-redo <em>## redo files differing from baseline</em>
make test-clean <em>## remove all test results</em>
</pre></pre></blockquote>
<p>and then run <code>make check</code> again.
</p>
<p>For tracking memory usage as part of this test, you will need GUILE
CVS; especially the following patch:
<a href="http://lilypond.org/vc/gub.darcs/patches/guile-1.9-gcstats.patch">http://lilypond.org/vc/gub.darcs/patches/guile-1.9-gcstats.patch</a>.
</p>
<p>For checking the coverage of the test suite, do the following
</p>
<blockquote><pre class="example"><pre class="example">./scripts/auxiliar/build-coverage.sh
<em># uncovered files, least covered first</em>
./scripts/auxiliar/coverage.py --summary out-cov/*.cc
<em># consecutive uncovered lines, longest first</em>
./scripts/auxiliar/coverage.py --uncovered out-cov/*.cc
</pre></pre></blockquote>
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<h4 class="toc_header"> <a href="index.html#Top" title="Start of the manual">Application Usage</a></h4>
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<li class="toc_current"><a name="toc-Install-1" href="Install.html#Install">1. Install</a>
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<li><a name="toc-Precompiled-binaries-1" href="Precompiled-binaries.html#Precompiled-binaries">1.1 Precompiled binaries</a> </li>
<li class="toc_current"><a name="toc-Compiling-from-source-1" href="Compiling-from-source.html#Compiling-from-source">1.2 Compiling from source</a>
<ul class="toc">
<li><a name="toc-Downloading-source-code-1" href="Downloading-source-code.html#Downloading-source-code">1.2.1 Downloading source code</a> </li>
<li><a name="toc-Requirements-1" href="Requirements.html#Requirements">1.2.2 Requirements</a> </li>
<li><a name="toc-Building-LilyPond-1" href="Building-LilyPond.html#Building-LilyPond">1.2.3 Building LilyPond</a> </li>
<li><a name="toc-Building-documentation-1" href="Building-documentation.html#Building-documentation">1.2.4 Building documentation</a> </li>
<li class="toc_current"><a name="toc-Testing-LilyPond-1" href="Testing-LilyPond.html#Testing-LilyPond">1.2.5 Testing LilyPond</a> </li>
<li><a name="toc-Problems-1" href="Problems.html#Problems">1.2.6 Problems</a> </li>
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</li>
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<li><a name="toc-Setup-1" href="Setup.html#Setup">2. Setup</a>
<ul class="toc">
<li><a name="toc-Setup-for-specific-Operating-Systems-1" href="Setup-for-specific-Operating-Systems.html#Setup-for-specific-Operating-Systems">2.1 Setup for specific Operating Systems</a> </li>
<li><a name="toc-Text-editor-support-1" href="Text-editor-support.html#Text-editor-support">2.2 Text editor support</a> </li>
<li><a name="toc-Point-and-click-1" href="Point-and-click.html#Point-and-click">2.3 Point and click</a> </li>
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</li>
<li><a name="toc-Running-LilyPond-1" href="Running-LilyPond.html#Running-LilyPond">3. Running LilyPond</a>
<ul class="toc">
<li><a name="toc-Normal-usage-1" href="Normal-usage.html#Normal-usage">3.1 Normal usage</a> </li>
<li><a name="toc-Command_002dline-usage-1" href="Command_002dline-usage.html#Command_002dline-usage">3.2 Command-line usage</a> </li>
<li><a name="toc-Error-messages-1" href="Error-messages.html#Error-messages">3.3 Error messages</a> </li>
<li><a name="toc-Updating-files-with-convert_002dly-1" href="Updating-files-with-convert_002dly.html#Updating-files-with-convert_002dly">3.4 Updating files with <code>convert-ly</code></a> </li>
<li><a name="toc-Reporting-bugs-1" href="Reporting-bugs.html#Reporting-bugs">3.5 Reporting bugs</a> </li>
</ul>
</li>
<li><a name="toc-lilypond_002dbook_003a-Integrating-text-and-music" href="LilyPond_002dbook.html#LilyPond_002dbook">4. <code>lilypond-book</code>: Integrating text and music</a>
<ul class="toc">
<li><a name="toc-An-example-of-a-musicological-document-1" href="An-example-of-a-musicological-document.html#An-example-of-a-musicological-document">4.1 An example of a musicological document</a> </li>
<li><a name="toc-Integrating-music-and-text-1" href="Integrating-music-and-text.html#Integrating-music-and-text">4.2 Integrating music and text</a> </li>
<li><a name="toc-Music-fragment-options-1" href="Music-fragment-options.html#Music-fragment-options">4.3 Music fragment options</a> </li>
<li><a name="toc-Invoking-lilypond_002dbook-1" href="Invoking-lilypond_002dbook.html#Invoking-lilypond_002dbook">4.4 Invoking <code>lilypond-book</code></a> </li>
<li><a name="toc-Filename-extensions-1" href="Filename-extensions.html#Filename-extensions">4.5 Filename extensions</a> </li>
<li><a name="toc-Alternative-methods-of-mixing-text-and-music" href="Alternate-methods-of-mixing-text-and-music.html#Alternate-methods-of-mixing-text-and-music">4.6 Alternative methods of mixing text and music</a> </li>
</ul>
</li>
<li><a name="toc-Converting-from-other-formats-1" href="Converting-from-other-formats.html#Converting-from-other-formats">5. Converting from other formats</a>
<ul class="toc">
<li><a name="toc-Invoking-midi2ly-1" href="Invoking-midi2ly.html#Invoking-midi2ly">5.1 Invoking <code>midi2ly</code></a> </li>
<li><a name="toc-Invoking-musicxml2ly-1" href="Invoking-musicxml2ly.html#Invoking-musicxml2ly">5.2 Invoking <code>musicxml2ly</code></a> </li>
<li><a name="toc-Invoking-abc2ly-1" href="Invoking-abc2ly.html#Invoking-abc2ly">5.3 Invoking <code>abc2ly</code></a> </li>
<li><a name="toc-Invoking-etf2ly-1" href="Invoking-etf2ly.html#Invoking-etf2ly">5.4 Invoking <code>etf2ly</code></a> </li>
<li><a name="toc-Generating-LilyPond-files-1" href="Generating-LilyPond-files.html#Generating-LilyPond-files">5.5 Generating LilyPond files</a> </li>
</ul>
</li>
<li><a name="toc-GNU-Free-Documentation-License-1" href="GNU-Free-Documentation-License.html#GNU-Free-Documentation-License">A. GNU Free Documentation License</a> </li>
<li><a name="toc-LilyPond-index-1" href="LilyPond-index.html#LilyPond-index">B. LilyPond index</a> </li>
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