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<div class="section" id="module-pygame.tests">
<span id="pygame-tests"></span><dl class="definition module">
<dt class="title module">
<tt class="docutils literal"><span class="pre">pygame.tests</span></tt></dt>
<dd><div class="line-block">
<div class="line"><span class="summaryline">Pygame unit test suite package</span></div>
<table border="1" class="toc docutils">
<col width="31%" />
<col width="2%" />
<col width="68%" />
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<tr><td><a class="toc reference external" href=""></a></td>
<td>Run the Pygame unit test suite</td>
<p>A quick way to run the test suite package from the command line is to import
the go submodule with the Python -m option:</p>
<div class="highlight-python"><pre>python -m pygame.tests [&lt;test options&gt;]</pre>
<p>Command line option &#8211;help displays a usage message. Available options
correspond to the <a class="tooltip reference internal" href="" title=""><tt class="xref py py-func docutils literal"><span class="pre"></span></tt><span class="tooltip-content">Run the Pygame unit test suite</span></a> arguments.</p>
<p>The xxxx_test submodules of the tests package are unit test suites for
individual parts of Pygame. Each can also be run as a main program. This is
useful if the test, such as cdrom_test, is interactive.</p>
<p>For Pygame development the test suite can be run from a Pygame distribution
root directory. Program <tt class="docutils literal"><span class="pre"></span></tt> is provided for convenience, though
test/ can be run directly.</p>
<p>Module level tags control which modules are included in a unit test run. Tags
are assigned to a unit test module with a corresponding &lt;&lt;ame&gt; module.
The tags module has the global __tags__, a list of tag names. For example,
<tt class="docutils literal"><span class="pre"></span></tt> has a tag file <tt class="docutils literal"><span class="pre"></span></tt> containing a tags list that
has the &#8216;interactive&#8217; string. The &#8216;interactive&#8217; tag indicates <tt class="docutils literal"><span class="pre"></span></tt>
expects user input. It is excluded from a <tt class="docutils literal"><span class="pre"></span></tt> or
<tt class="docutils literal"><span class="pre">pygame.tests.go</span></tt> run. Two other tags that are excluded are &#8216;ignore&#8217; and
&#8216;subprocess_ignore&#8217;. These two tags indicate unit tests that will not run on a
particular platform, or for which no corresponding Pygame module is available.
The test runner will list each excluded module along with the tag responsible.</p>
<dl class="definition function">
<dt class="title" id="">
<tt class="descclassname">pygame.tests.</tt><tt class="descname">run</tt><big>(</big><big>)</big><a class="headerlink" href="" title="Permalink to this definition"></a></dt>
<dd><div class="line-block">
<div class="line"><span class="summaryline">Run the Pygame unit test suite</span></div>
<div class="line"><span class="signature">run(*args, **kwds) -&gt; tuple</span></div>
<p>Positional arguments (optional):</p>
<div class="highlight-python"><pre>The names of tests to include. If omitted then all tests are run. Test names
need not include the trailing '_test'.</pre>
<p>Keyword arguments:</p>
<div class="highlight-python"><pre>incomplete - fail incomplete tests (default False)
nosubprocess - run all test suites in the current process
               (default False, use separate subprocesses)
dump - dump failures/errors as dict ready to eval (default False)
file - if provided, the name of a file into which to dump failures/errors
timings - if provided, the number of times to run each individual test to
          get an average run time (default is run each test once)
exclude - A list of TAG names to exclude from the run
show_output - show silenced stderr/stdout on errors (default False)
all - dump all results, not just errors (default False)
randomize - randomize order of tests (default False)
seed - if provided, a seed randomizer integer
multi_thread - if provided, the number of THREADS in which to run
               subprocessed tests
time_out - if subprocess is True then the time limit in seconds before
           killing a test (default 30)
fake - if provided, the name of the fake tests package in the
       run_tests__tests subpackage to run instead of the normal
       Pygame tests
python - the path to a python executable to run subprocessed tests
         (default sys.executable)</pre>
<p>Return value:</p>
<div class="highlight-python"><pre>A tuple of total number of tests run, dictionary of error information.
The dictionary is empty if no errors were recorded.</pre>
<p>By default individual test modules are run in separate subprocesses. This
recreates normal Pygame usage where <tt class="docutils literal"><span class="pre">pygame.init()</span></tt> and <tt class="docutils literal"><span class="pre">pygame.quit()</span></tt>
are called only once per program execution, and avoids unfortunate
interactions between test modules. Also, a time limit is placed on test
execution, so frozen tests are killed when there time allotment expired. Use
the single process option if threading is not working properly or if tests
are taking too long. It is not guaranteed that all tests will pass in single
process mode.</p>
<p>Tests are run in a randomized order if the randomize argument is True or a
seed argument is provided. If no seed integer is provided then the system
time is used.</p>
<p>Individual test modules may have a __tags__ attribute, a list of tag strings
used to selectively omit modules from a run. By default only &#8216;interactive&#8217;
modules such as cdrom_test are ignored. An interactive module must be run
from the console as a Python program.</p>
<p>This function can only be called once per Python session. It is not



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