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<div class="section" id="support-for-unittest-testcase">
<span id="unittest-testcase"></span><h1>Support for unittest.TestCase<a class="headerlink" href="#support-for-unittest-testcase" title="Permalink to this headline">ΒΆ</a></h1>
<p>py.test has limited support for running Python <a class="reference external" href="http://docs.python.org/library/unittest.html">unittest.py style</a> tests.
It will automatically collect <tt class="docutils literal"><span class="pre">unittest.TestCase</span></tt> subclasses
and their <tt class="docutils literal"><span class="pre">test</span></tt> methods in test files. It will invoke
<tt class="docutils literal"><span class="pre">setUp/tearDown</span></tt> methods but also perform py.test’s standard ways
of treating tests such as IO capturing:</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c"># content of test_unittest.py</span>
<span class="kn">import</span> <span class="nn">unittest</span>
<span class="k">class</span> <span class="nc">MyTest</span><span class="p">(</span><span class="n">unittest</span><span class="o">.</span><span class="n">TestCase</span><span class="p">):</span>
<span class="k">def</span> <span class="nf">setUp</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="k">print</span> <span class="p">(</span><span class="s">"hello"</span><span class="p">)</span> <span class="c"># output is captured</span>
<span class="k">def</span> <span class="nf">test_method</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span>
<span class="n">x</span> <span class="o">=</span> <span class="mi">1</span>
<span class="bp">self</span><span class="o">.</span><span class="n">assertEquals</span><span class="p">(</span><span class="n">x</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span>
</pre></div>
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<p>Running it yields:</p>
<div class="highlight-python"><pre>$ py.test test_unittest.py
=========================== test session starts ============================
platform darwin -- Python 2.7.1 -- pytest-2.2.2
collecting ... collected 1 items
test_unittest.py F
================================= FAILURES =================================
____________________________ MyTest.test_method ____________________________
self = <test_unittest.MyTest testMethod=test_method>
def test_method(self):
x = 1
> self.assertEquals(x, 3)
E AssertionError: 1 != 3
test_unittest.py:8: AssertionError
----------------------------- Captured stdout ------------------------------
hello
========================= 1 failed in 0.15 seconds =========================</pre>
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