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<div class="section" id="running-tests-written-for-nose">
<h1>Running tests written for nose<a class="headerlink" href="#running-tests-written-for-nose" title="Permalink to this headline">¶</a></h1>
<p><tt class="docutils literal"><span class="pre">pytest</span></tt> has basic support for running tests written for <a class="reference external" href="http://somethingaboutorange.com/mrl/projects/nose/">nose</a>.</p>
<div class="section" id="usage">
<span id="nosestyle"></span><h2>Usage<a class="headerlink" href="#usage" title="Permalink to this headline">¶</a></h2>
<p>After <a class="reference internal" href="getting-started.html#installation"><em>Installation</em></a> type:</p>
<div class="highlight-python"><pre>python setup.py develop # make sure tests can import our package
py.test # instead of 'nosetests'</pre>
</div>
<p>and you should be able to run your nose style tests and
make use of pytest’s capabilities.</p>
</div>
<div class="section" id="supported-nose-idioms">
<h2>Supported nose Idioms<a class="headerlink" href="#supported-nose-idioms" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>setup and teardown at module/class/method level</li>
<li>SkipTest exceptions and markers</li>
<li>setup/teardown decorators</li>
<li>yield-based tests and their setup</li>
<li><tt class="docutils literal"><span class="pre">__test__</span></tt> attribute on modules/classes/functions</li>
<li>general usage of nose utilities</li>
</ul>
</div>
<div class="section" id="unsupported-idioms-known-issues">
<h2>Unsupported idioms / known issues<a class="headerlink" href="#unsupported-idioms-known-issues" title="Permalink to this headline">¶</a></h2>
<ul class="simple">
<li>unittest-style <tt class="docutils literal"><span class="pre">setUp,</span> <span class="pre">tearDown,</span> <span class="pre">setUpClass,</span> <span class="pre">tearDownClass</span></tt>
are recognized only on <tt class="docutils literal"><span class="pre">unittest.TestCase</span></tt> classes but not
on plain classes. <tt class="docutils literal"><span class="pre">nose</span></tt> supports these methods also on plain
classes but pytest deliberately does not. As nose and pytest already
both support <tt class="docutils literal"><span class="pre">setup_class,</span> <span class="pre">teardown_class,</span> <span class="pre">setup_method,</span> <span class="pre">teardown_method</span></tt>
it doesn’t seem useful to duplicate the unittest-API like nose does.
If you however rather think pytest should support the unittest-spelling on
plain classes please post <a class="reference external" href="https://bitbucket.org/pytest-dev/pytest/issue/377/">to this issue</a>.</li>
<li>nose imports test modules with the same import path (e.g.
<tt class="docutils literal"><span class="pre">tests.test_mod</span></tt>) but different file system paths
(e.g. <tt class="docutils literal"><span class="pre">tests/test_mode.py</span></tt> and <tt class="docutils literal"><span class="pre">other/tests/test_mode.py</span></tt>)
by extending sys.path/import semantics. pytest does not do that
but there is discussion in <a class="reference external" href="https://bitbucket.org/pytest-dev/pytest/issue/268">issue268</a> for adding some support. Note that
<a class="reference external" href="https://nose2.readthedocs.org/en/latest/differences.html#test-discovery-and-loading">nose2 choose to avoid this sys.path/import hackery</a>.</li>
<li>nose-style doctests are not collected and executed correctly,
also doctest fixtures don’t work.</li>
<li>no nose-configuration is recognized</li>
</ul>
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<li><a class="reference internal" href="#">Running tests written for nose</a><ul>
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