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- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>32.5. Test Coverage Examination</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="regress-tap.html" title="32.4. TAP Tests" /><link rel="next" href="client-interfaces.html" title="Part IV. Client Interfaces" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">32.5. Test Coverage Examination</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="regress-tap.html" title="32.4. TAP Tests">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="regress.html" title="Chapter 32. Regression Tests">Up</a></td><th width="60%" align="center">Chapter 32. Regression Tests</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 12.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="client-interfaces.html" title="Part IV. Client Interfaces">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="REGRESS-COVERAGE"><div class="titlepage"><div><div><h2 class="title" style="clear: both">32.5. Test Coverage Examination</h2></div></div></div><p>
- The PostgreSQL source code can be compiled with coverage testing
- instrumentation, so that it becomes possible to examine which
- parts of the code are covered by the regression tests or any other
- test suite that is run with the code. This is currently supported
- when compiling with GCC and requires the <code class="command">gcov</code>
- and <code class="command">lcov</code> programs.
- </p><p>
- A typical workflow would look like this:
- </p><pre class="screen">
- ./configure --enable-coverage ... OTHER OPTIONS ...
- make
- make check # or other test suite
- make coverage-html
- </pre><p>
- Then point your HTML browser
- to <code class="filename">coverage/index.html</code>.
- The <code class="command">make</code> commands also work in subdirectories.
- </p><p>
- If you don't have <code class="command">lcov</code> or prefer text output over an
- HTML report, you can also run
- </p><pre class="screen">
- make coverage
- </pre><p>
- instead of <code class="literal">make coverage-html</code>, which will
- produce <code class="filename">.gcov</code> output files for each source file
- relevant to the test. (<code class="literal">make coverage</code> and <code class="literal">make
- coverage-html</code> will overwrite each other's files, so mixing them
- might be confusing.)
- </p><p>
- To reset the execution counts between test runs, run:
- </p><pre class="screen">
- make coverage-clean
- </pre><p>
- </p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="regress-tap.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="regress.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="client-interfaces.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">32.4. TAP Tests </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> Part IV. Client Interfaces</td></tr></table></div></body></html>
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