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| <div class="section" id="the-mock-class"> |
| <h1>The Mock Class<a class="headerlink" href="#the-mock-class" title="Permalink to this headline">¶</a></h1> |
| <p><cite>Mock</cite> is a flexible mock object intended to replace the use of stubs and |
| test doubles throughout your code. Mocks are callable and create attributes as |
| new mocks when you access them <a class="footnote-reference" href="#id3" id="id1">[1]</a>. Accessing the same attribute will always |
| return the same mock. Mocks record how you use them, allowing you to make |
| assertions about what your code has done to them.</p> |
| <p><a class="reference internal" href="magicmock.html#mock.MagicMock" title="mock.MagicMock"><tt class="xref py py-class docutils literal"><span class="pre">MagicMock</span></tt></a> is a subclass of <cite>Mock</cite> with all the magic methods |
| pre-created and ready to use. There are also non-callable variants, useful |
| when you are mocking out objects that aren’t callable: |
| <a class="reference internal" href="#mock.NonCallableMock" title="mock.NonCallableMock"><tt class="xref py py-class docutils literal"><span class="pre">NonCallableMock</span></tt></a> and <a class="reference internal" href="magicmock.html#mock.NonCallableMagicMock" title="mock.NonCallableMagicMock"><tt class="xref py py-class docutils literal"><span class="pre">NonCallableMagicMock</span></tt></a></p> |
| <p>The <a class="reference internal" href="patch.html#mock.patch" title="mock.patch"><tt class="xref py py-func docutils literal"><span class="pre">patch()</span></tt></a> decorators makes it easy to temporarily replace classes |
| in a particular module with a <cite>Mock</cite> object. By default <cite>patch</cite> will create |
| a <cite>MagicMock</cite> for you. You can specify an alternative class of <cite>Mock</cite> using |
| the <cite>new_callable</cite> argument to <cite>patch</cite>.</p> |
| <span class="target" id="index-0"></span><span class="target" id="index-1"></span><span class="target" id="index-2"></span><span class="target" id="index-3"></span><span class="target" id="index-4"></span><dl class="class"> |
| <dt id="mock.Mock"> |
| <em class="property">class </em><tt class="descname">Mock</tt><big>(</big><em>spec=None</em>, <em>side_effect=None</em>, <em>return_value=DEFAULT</em>, <em>wraps=None</em>, <em>name=None</em>, <em>spec_set=None</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.Mock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Create a new <cite>Mock</cite> object. <cite>Mock</cite> takes several optional arguments |
| that specify the behaviour of the Mock object:</p> |
| <ul> |
| <li><p class="first"><cite>spec</cite>: This can be either a list of strings or an existing object (a |
| class or instance) that acts as the specification for the mock object. If |
| you pass in an object then a list of strings is formed by calling dir on |
| the object (excluding unsupported magic attributes and methods). |
| Accessing any attribute not in this list will raise an <cite>AttributeError</cite>.</p> |
| <p>If <cite>spec</cite> is an object (rather than a list of strings) then |
| <a class="reference internal" href="#mock.Mock.__class__" title="mock.Mock.__class__"><tt class="xref py py-attr docutils literal"><span class="pre">__class__</span></tt></a> returns the class of the spec object. This allows mocks |
| to pass <cite>isinstance</cite> tests.</p> |
| </li> |
| <li><p class="first"><cite>spec_set</cite>: A stricter variant of <cite>spec</cite>. If used, attempting to <em>set</em> |
| or get an attribute on the mock that isn’t on the object passed as |
| <cite>spec_set</cite> will raise an <cite>AttributeError</cite>.</p> |
| </li> |
| <li><p class="first"><cite>side_effect</cite>: A function to be called whenever the Mock is called. See |
| the <a class="reference internal" href="#mock.Mock.side_effect" title="mock.Mock.side_effect"><tt class="xref py py-attr docutils literal"><span class="pre">side_effect</span></tt></a> attribute. Useful for raising exceptions or |
| dynamically changing return values. The function is called with the same |
| arguments as the mock, and unless it returns <a class="reference internal" href="sentinel.html#mock.DEFAULT" title="mock.DEFAULT"><tt class="xref py py-data docutils literal"><span class="pre">DEFAULT</span></tt></a>, the return |
| value of this function is used as the return value.</p> |
| <p>Alternatively <cite>side_effect</cite> can be an exception class or instance. In |
| this case the exception will be raised when the mock is called.</p> |
| <p>If <cite>side_effect</cite> is an iterable then each call to the mock will return |
| the next value from the iterable. If any of the members of the iterable |
| are exceptions they will be raised instead of returned.</p> |
| <p>A <cite>side_effect</cite> can be cleared by setting it to <cite>None</cite>.</p> |
| </li> |
| <li><p class="first"><cite>return_value</cite>: The value returned when the mock is called. By default |
| this is a new Mock (created on first access). See the |
| <a class="reference internal" href="#mock.Mock.return_value" title="mock.Mock.return_value"><tt class="xref py py-attr docutils literal"><span class="pre">return_value</span></tt></a> attribute.</p> |
| </li> |
| <li><p class="first"><cite>wraps</cite>: Item for the mock object to wrap. If <cite>wraps</cite> is not None then |
| calling the Mock will pass the call through to the wrapped object |
| (returning the real result and ignoring <cite>return_value</cite>). Attribute access |
| on the mock will return a Mock object that wraps the corresponding |
| attribute of the wrapped object (so attempting to access an attribute |
| that doesn’t exist will raise an <cite>AttributeError</cite>).</p> |
| <p>If the mock has an explicit <cite>return_value</cite> set then calls are not passed |
| to the wrapped object and the <cite>return_value</cite> is returned instead.</p> |
| </li> |
| <li><p class="first"><cite>name</cite>: If the mock has a name then it will be used in the repr of the |
| mock. This can be useful for debugging. The name is propagated to child |
| mocks.</p> |
| </li> |
| </ul> |
| <p>Mocks can also be called with arbitrary keyword arguments. These will be |
| used to set attributes on the mock after it is created. See the |
| <a class="reference internal" href="#mock.Mock.configure_mock" title="mock.Mock.configure_mock"><tt class="xref py py-meth docutils literal"><span class="pre">configure_mock()</span></tt></a> method for details.</p> |
| <dl class="method"> |
| <dt id="mock.Mock.assert_called_with"> |
| <tt class="descname">assert_called_with</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.Mock.assert_called_with" title="Permalink to this definition">¶</a></dt> |
| <dd><p>This method is a convenient way of asserting that calls are made in a |
| particular way:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="n">test</span><span class="o">=</span><span class="s">'wow'</span><span class="p">)</span> |
| <span class="go"><Mock name='mock.method()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="o">.</span><span class="n">assert_called_with</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">,</span> <span class="n">test</span><span class="o">=</span><span class="s">'wow'</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.assert_called_once_with"> |
| <tt class="descname">assert_called_once_with</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.Mock.assert_called_once_with" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Assert that the mock was called exactly once and with the specified |
| arguments.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="s">'foo'</span><span class="p">,</span> <span class="n">bar</span><span class="o">=</span><span class="s">'baz'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">assert_called_once_with</span><span class="p">(</span><span class="s">'foo'</span><span class="p">,</span> <span class="n">bar</span><span class="o">=</span><span class="s">'baz'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="s">'foo'</span><span class="p">,</span> <span class="n">bar</span><span class="o">=</span><span class="s">'baz'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">assert_called_once_with</span><span class="p">(</span><span class="s">'foo'</span><span class="p">,</span> <span class="n">bar</span><span class="o">=</span><span class="s">'baz'</span><span class="p">)</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">AssertionError</span>: <span class="n">Expected to be called once. Called 2 times.</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.assert_any_call"> |
| <tt class="descname">assert_any_call</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.Mock.assert_any_call" title="Permalink to this definition">¶</a></dt> |
| <dd><p>assert the mock has been called with the specified arguments.</p> |
| <p>The assert passes if the mock has <em>ever</em> been called, unlike |
| <a class="reference internal" href="#mock.Mock.assert_called_with" title="mock.Mock.assert_called_with"><tt class="xref py py-meth docutils literal"><span class="pre">assert_called_with()</span></tt></a> and <a class="reference internal" href="#mock.Mock.assert_called_once_with" title="mock.Mock.assert_called_once_with"><tt class="xref py py-meth docutils literal"><span class="pre">assert_called_once_with()</span></tt></a> that |
| only pass if the call is the most recent one.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="n">arg</span><span class="o">=</span><span class="s">'thing'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="s">'some'</span><span class="p">,</span> <span class="s">'thing'</span><span class="p">,</span> <span class="s">'else'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">assert_any_call</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="n">arg</span><span class="o">=</span><span class="s">'thing'</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.assert_has_calls"> |
| <tt class="descname">assert_has_calls</tt><big>(</big><em>calls</em>, <em>any_order=False</em><big>)</big><a class="headerlink" href="#mock.Mock.assert_has_calls" title="Permalink to this definition">¶</a></dt> |
| <dd><p>assert the mock has been called with the specified calls. |
| The <cite>mock_calls</cite> list is checked for the calls.</p> |
| <p>If <cite>any_order</cite> is False (the default) then the calls must be |
| sequential. There can be extra calls before or after the |
| specified calls.</p> |
| <p>If <cite>any_order</cite> is True then the calls can be in any order, but |
| they must all appear in <a class="reference internal" href="#mock.Mock.mock_calls" title="mock.Mock.mock_calls"><tt class="xref py py-attr docutils literal"><span class="pre">mock_calls</span></tt></a>.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">4</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">calls</span> <span class="o">=</span> <span class="p">[</span><span class="n">call</span><span class="p">(</span><span class="mi">2</span><span class="p">),</span> <span class="n">call</span><span class="p">(</span><span class="mi">3</span><span class="p">)]</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">assert_has_calls</span><span class="p">(</span><span class="n">calls</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">calls</span> <span class="o">=</span> <span class="p">[</span><span class="n">call</span><span class="p">(</span><span class="mi">4</span><span class="p">),</span> <span class="n">call</span><span class="p">(</span><span class="mi">2</span><span class="p">),</span> <span class="n">call</span><span class="p">(</span><span class="mi">3</span><span class="p">)]</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">assert_has_calls</span><span class="p">(</span><span class="n">calls</span><span class="p">,</span> <span class="n">any_order</span><span class="o">=</span><span class="bp">True</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.reset_mock"> |
| <tt class="descname">reset_mock</tt><big>(</big><big>)</big><a class="headerlink" href="#mock.Mock.reset_mock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>The reset_mock method resets all the call attributes on a mock object:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="s">'hello'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">called</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">reset_mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">called</span> |
| <span class="go">False</span> |
| </pre></div> |
| </div> |
| <p>This can be useful where you want to make a series of assertions that |
| reuse the same object. Note that <cite>reset_mock</cite> <em>doesn’t</em> clear the |
| return value, <a class="reference internal" href="#mock.Mock.side_effect" title="mock.Mock.side_effect"><tt class="xref py py-attr docutils literal"><span class="pre">side_effect</span></tt></a> or any child attributes you have |
| set using normal assignment. Child mocks and the return value mock |
| (if any) are reset as well.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.mock_add_spec"> |
| <tt class="descname">mock_add_spec</tt><big>(</big><em>spec</em>, <em>spec_set=False</em><big>)</big><a class="headerlink" href="#mock.Mock.mock_add_spec" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Add a spec to a mock. <cite>spec</cite> can either be an object or a |
| list of strings. Only attributes on the <cite>spec</cite> can be fetched as |
| attributes from the mock.</p> |
| <p>If <cite>spec_set</cite> is <cite>True</cite> then only attributes on the spec can be set.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.attach_mock"> |
| <tt class="descname">attach_mock</tt><big>(</big><em>mock</em>, <em>attribute</em><big>)</big><a class="headerlink" href="#mock.Mock.attach_mock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Attach a mock as an attribute of this one, replacing its name and |
| parent. Calls to the attached mock will be recorded in the |
| <a class="reference internal" href="#mock.Mock.method_calls" title="mock.Mock.method_calls"><tt class="xref py py-attr docutils literal"><span class="pre">method_calls</span></tt></a> and <a class="reference internal" href="#mock.Mock.mock_calls" title="mock.Mock.mock_calls"><tt class="xref py py-attr docutils literal"><span class="pre">mock_calls</span></tt></a> attributes of this one.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.configure_mock"> |
| <tt class="descname">configure_mock</tt><big>(</big><em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.Mock.configure_mock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Set attributes on the mock through keyword arguments.</p> |
| <p>Attributes plus return values and side effects can be set on child |
| mocks using standard dot notation and unpacking a dictionary in the |
| method call:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">attrs</span> <span class="o">=</span> <span class="p">{</span><span class="s">'method.return_value'</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="s">'other.side_effect'</span><span class="p">:</span> <span class="ne">KeyError</span><span class="p">}</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">configure_mock</span><span class="p">(</span><span class="o">**</span><span class="n">attrs</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">other</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">KeyError</span> |
| </pre></div> |
| </div> |
| <p>The same thing can be achieved in the constructor call to mocks:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">attrs</span> <span class="o">=</span> <span class="p">{</span><span class="s">'method.return_value'</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="s">'other.side_effect'</span><span class="p">:</span> <span class="ne">KeyError</span><span class="p">}</span> |
| <span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">some_attribute</span><span class="o">=</span><span class="s">'eggs'</span><span class="p">,</span> <span class="o">**</span><span class="n">attrs</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">some_attribute</span> |
| <span class="go">'eggs'</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">other</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">KeyError</span> |
| </pre></div> |
| </div> |
| <p><cite>configure_mock</cite> exists to make it easier to do configuration |
| after the mock has been created.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock.__dir__"> |
| <tt class="descname">__dir__</tt><big>(</big><big>)</big><a class="headerlink" href="#mock.Mock.__dir__" title="Permalink to this definition">¶</a></dt> |
| <dd><p><cite>Mock</cite> objects limit the results of <cite>dir(some_mock)</cite> to useful results. |
| For mocks with a <cite>spec</cite> this includes all the permitted attributes |
| for the mock.</p> |
| <p>See <a class="reference internal" href="helpers.html#mock.FILTER_DIR" title="mock.FILTER_DIR"><tt class="xref py py-data docutils literal"><span class="pre">FILTER_DIR</span></tt></a> for what this filtering does, and how to |
| switch it off.</p> |
| </dd></dl> |
| |
| <dl class="method"> |
| <dt id="mock.Mock._get_child_mock"> |
| <tt class="descname">_get_child_mock</tt><big>(</big><em>**kw</em><big>)</big><a class="headerlink" href="#mock.Mock._get_child_mock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Create the child mocks for attributes and return value. |
| By default child mocks will be the same type as the parent. |
| Subclasses of Mock may want to override this to customize the way |
| child mocks are made.</p> |
| <p>For non-callable mocks the callable variant will be used (rather than |
| any custom subclass).</p> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.called"> |
| <tt class="descname">called</tt><a class="headerlink" href="#mock.Mock.called" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A boolean representing whether or not the mock object has been called:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">called</span> |
| <span class="go">False</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">called</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.call_count"> |
| <tt class="descname">call_count</tt><a class="headerlink" href="#mock.Mock.call_count" title="Permalink to this definition">¶</a></dt> |
| <dd><p>An integer telling you how many times the mock object has been called:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_count</span> |
| <span class="go">0</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_count</span> |
| <span class="go">2</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.return_value"> |
| <tt class="descname">return_value</tt><a class="headerlink" href="#mock.Mock.return_value" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Set this to configure the value returned by calling the mock:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">return_value</span> <span class="o">=</span> <span class="s">'fish'</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="go">'fish'</span> |
| </pre></div> |
| </div> |
| <p>The default return value is a mock object and you can configure it in |
| the normal way:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">return_value</span><span class="o">.</span><span class="n">attribute</span> <span class="o">=</span> <span class="n">sentinel</span><span class="o">.</span><span class="n">Attribute</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">return_value</span><span class="p">()</span> |
| <span class="go"><Mock name='mock()()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">return_value</span><span class="o">.</span><span class="n">assert_called_with</span><span class="p">()</span> |
| </pre></div> |
| </div> |
| <p><cite>return_value</cite> can also be set in the constructor:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">return_value</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="go">3</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.side_effect"> |
| <tt class="descname">side_effect</tt><a class="headerlink" href="#mock.Mock.side_effect" title="Permalink to this definition">¶</a></dt> |
| <dd><p>This can either be a function to be called when the mock is called, |
| or an exception (class or instance) to be raised.</p> |
| <p>If you pass in a function it will be called with same arguments as the |
| mock and unless the function returns the <a class="reference internal" href="sentinel.html#mock.DEFAULT" title="mock.DEFAULT"><tt class="xref py py-data docutils literal"><span class="pre">DEFAULT</span></tt></a> singleton the |
| call to the mock will then return whatever the function returns. If the |
| function returns <a class="reference internal" href="sentinel.html#mock.DEFAULT" title="mock.DEFAULT"><tt class="xref py py-data docutils literal"><span class="pre">DEFAULT</span></tt></a> then the mock will return its normal |
| value (from the <a class="reference internal" href="#mock.Mock.return_value" title="mock.Mock.return_value"><tt class="xref py py-attr docutils literal"><span class="pre">return_value</span></tt></a>.</p> |
| <p>An example of a mock that raises an exception (to test exception |
| handling of an API):</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="ne">Exception</span><span class="p">(</span><span class="s">'Boom!'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">Exception</span>: <span class="n">Boom!</span> |
| </pre></div> |
| </div> |
| <p>Using <cite>side_effect</cite> to return a sequence of values:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="p">[</span><span class="mi">3</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">1</span><span class="p">]</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(),</span> <span class="n">mock</span><span class="p">(),</span> <span class="n">mock</span><span class="p">()</span> |
| <span class="go">(3, 2, 1)</span> |
| </pre></div> |
| </div> |
| <p>The <cite>side_effect</cite> function is called with the same arguments as the |
| mock (so it is wise for it to take arbitrary args and keyword |
| arguments) and whatever it returns is used as the return value for |
| the call. The exception is if <cite>side_effect</cite> returns <a class="reference internal" href="sentinel.html#mock.DEFAULT" title="mock.DEFAULT"><tt class="xref py py-data docutils literal"><span class="pre">DEFAULT</span></tt></a>, |
| in which case the normal <a class="reference internal" href="#mock.Mock.return_value" title="mock.Mock.return_value"><tt class="xref py py-attr docutils literal"><span class="pre">return_value</span></tt></a> is used.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="k">def</span> <span class="nf">side_effect</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="n">DEFAULT</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="n">side_effect</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="go">3</span> |
| </pre></div> |
| </div> |
| <p><cite>side_effect</cite> can be set in the constructor. Here’s an example that |
| adds one to the value the mock is called with and returns it:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">side_effect</span> <span class="o">=</span> <span class="k">lambda</span> <span class="n">value</span><span class="p">:</span> <span class="n">value</span> <span class="o">+</span> <span class="mi">1</span> |
| <span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="n">side_effect</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">3</span><span class="p">)</span> |
| <span class="go">4</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="o">-</span><span class="mi">8</span><span class="p">)</span> |
| <span class="go">-7</span> |
| </pre></div> |
| </div> |
| <p>Setting <cite>side_effect</cite> to <cite>None</cite> clears it:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="kn">from</span> <span class="nn">mock</span> <span class="kn">import</span> <span class="n">Mock</span> |
| <span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="ne">KeyError</span><span class="p">,</span> <span class="n">return_value</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">KeyError</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="bp">None</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">3</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.call_args"> |
| <tt class="descname">call_args</tt><a class="headerlink" href="#mock.Mock.call_args" title="Permalink to this definition">¶</a></dt> |
| <dd><p>This is either <cite>None</cite> (if the mock hasn’t been called), or the |
| arguments that the mock was last called with. This will be in the |
| form of a tuple: the first member is any ordered arguments the mock |
| was called with (or an empty tuple) and the second member is any |
| keyword arguments (or an empty dictionary).</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="k">print</span> <span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> |
| <span class="go">None</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> |
| <span class="go">call()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> <span class="o">==</span> <span class="p">()</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> |
| <span class="go">call(3, 4)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> <span class="o">==</span> <span class="p">((</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">),)</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">,</span> <span class="mi">5</span><span class="p">,</span> <span class="n">key</span><span class="o">=</span><span class="s">'fish'</span><span class="p">,</span> <span class="nb">next</span><span class="o">=</span><span class="s">'w00t!'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args</span> |
| <span class="go">call(3, 4, 5, key='fish', next='w00t!')</span> |
| </pre></div> |
| </div> |
| <p><cite>call_args</cite>, along with members of the lists <a class="reference internal" href="#mock.Mock.call_args_list" title="mock.Mock.call_args_list"><tt class="xref py py-attr docutils literal"><span class="pre">call_args_list</span></tt></a>, |
| <a class="reference internal" href="#mock.Mock.method_calls" title="mock.Mock.method_calls"><tt class="xref py py-attr docutils literal"><span class="pre">method_calls</span></tt></a> and <a class="reference internal" href="#mock.Mock.mock_calls" title="mock.Mock.mock_calls"><tt class="xref py py-attr docutils literal"><span class="pre">mock_calls</span></tt></a> are <a class="reference internal" href="helpers.html#mock.call" title="mock.call"><tt class="xref py py-data docutils literal"><span class="pre">call</span></tt></a> objects. |
| These are tuples, so they can be unpacked to get at the individual |
| arguments and make more complex assertions. See |
| <a class="reference internal" href="helpers.html#calls-as-tuples"><em>calls as tuples</em></a>.</p> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.call_args_list"> |
| <tt class="descname">call_args_list</tt><a class="headerlink" href="#mock.Mock.call_args_list" title="Permalink to this definition">¶</a></dt> |
| <dd><p>This is a list of all the calls made to the mock object in sequence |
| (so the length of the list is the number of times it has been |
| called). Before any calls have been made it is an empty list. The |
| <a class="reference internal" href="helpers.html#mock.call" title="mock.call"><tt class="xref py py-data docutils literal"><span class="pre">call</span></tt></a> object can be used for conveniently constructing lists of |
| calls to compare with <cite>call_args_list</cite>.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="p">(</span><span class="n">key</span><span class="o">=</span><span class="s">'fish'</span><span class="p">,</span> <span class="nb">next</span><span class="o">=</span><span class="s">'w00t!'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args_list</span> |
| <span class="go">[call(), call(3, 4), call(key='fish', next='w00t!')]</span> |
| <span class="gp">>>> </span><span class="n">expected</span> <span class="o">=</span> <span class="p">[(),</span> <span class="p">((</span><span class="mi">3</span><span class="p">,</span> <span class="mi">4</span><span class="p">),),</span> <span class="p">({</span><span class="s">'key'</span><span class="p">:</span> <span class="s">'fish'</span><span class="p">,</span> <span class="s">'next'</span><span class="p">:</span> <span class="s">'w00t!'</span><span class="p">},)]</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">call_args_list</span> <span class="o">==</span> <span class="n">expected</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| <p>Members of <cite>call_args_list</cite> are <a class="reference internal" href="helpers.html#mock.call" title="mock.call"><tt class="xref py py-data docutils literal"><span class="pre">call</span></tt></a> objects. These can be |
| unpacked as tuples to get at the individual arguments. See |
| <a class="reference internal" href="helpers.html#calls-as-tuples"><em>calls as tuples</em></a>.</p> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.method_calls"> |
| <tt class="descname">method_calls</tt><a class="headerlink" href="#mock.Mock.method_calls" title="Permalink to this definition">¶</a></dt> |
| <dd><p>As well as tracking calls to themselves, mocks also track calls to |
| methods and attributes, and <em>their</em> methods and attributes:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="p">()</span> |
| <span class="go"><Mock name='mock.method()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">property</span><span class="o">.</span><span class="n">method</span><span class="o">.</span><span class="n">attribute</span><span class="p">()</span> |
| <span class="go"><Mock name='mock.property.method.attribute()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method_calls</span> |
| <span class="go">[call.method(), call.property.method.attribute()]</span> |
| </pre></div> |
| </div> |
| <p>Members of <cite>method_calls</cite> are <a class="reference internal" href="helpers.html#mock.call" title="mock.call"><tt class="xref py py-data docutils literal"><span class="pre">call</span></tt></a> objects. These can be |
| unpacked as tuples to get at the individual arguments. See |
| <a class="reference internal" href="helpers.html#calls-as-tuples"><em>calls as tuples</em></a>.</p> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.mock_calls"> |
| <tt class="descname">mock_calls</tt><a class="headerlink" href="#mock.Mock.mock_calls" title="Permalink to this definition">¶</a></dt> |
| <dd><p><cite>mock_calls</cite> records <em>all</em> calls to the mock object, its methods, magic |
| methods <em>and</em> return value mocks.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">result</span> <span class="o">=</span> <span class="n">mock</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">first</span><span class="p">(</span><span class="n">a</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="go"><MagicMock name='mock.first()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">second</span><span class="p">()</span> |
| <span class="go"><MagicMock name='mock.second()' id='...'></span> |
| <span class="gp">>>> </span><span class="nb">int</span><span class="p">(</span><span class="n">mock</span><span class="p">)</span> |
| <span class="go">1</span> |
| <span class="gp">>>> </span><span class="n">result</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> |
| <span class="go"><MagicMock name='mock()()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">expected</span> <span class="o">=</span> <span class="p">[</span><span class="n">call</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">),</span> <span class="n">call</span><span class="o">.</span><span class="n">first</span><span class="p">(</span><span class="n">a</span><span class="o">=</span><span class="mi">3</span><span class="p">),</span> <span class="n">call</span><span class="o">.</span><span class="n">second</span><span class="p">(),</span> |
| <span class="gp">... </span><span class="n">call</span><span class="o">.</span><span class="n">__int__</span><span class="p">(),</span> <span class="n">call</span><span class="p">()(</span><span class="mi">1</span><span class="p">)]</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">mock_calls</span> <span class="o">==</span> <span class="n">expected</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| <p>Members of <cite>mock_calls</cite> are <a class="reference internal" href="helpers.html#mock.call" title="mock.call"><tt class="xref py py-data docutils literal"><span class="pre">call</span></tt></a> objects. These can be |
| unpacked as tuples to get at the individual arguments. See |
| <a class="reference internal" href="helpers.html#calls-as-tuples"><em>calls as tuples</em></a>.</p> |
| </dd></dl> |
| |
| <dl class="attribute"> |
| <dt id="mock.Mock.__class__"> |
| <tt class="descname">__class__</tt><a class="headerlink" href="#mock.Mock.__class__" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Normally the <cite>__class__</cite> attribute of an object will return its type. |
| For a mock object with a <cite>spec</cite> <cite>__class__</cite> returns the spec class |
| instead. This allows mock objects to pass <cite>isinstance</cite> tests for the |
| object they are replacing / masquerading as:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">spec</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="nb">isinstance</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="nb">int</span><span class="p">)</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| <p><cite>__class__</cite> is assignable to, this allows a mock to pass an |
| <cite>isinstance</cite> check without forcing you to use a spec:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">__class__</span> <span class="o">=</span> <span class="nb">dict</span> |
| <span class="gp">>>> </span><span class="nb">isinstance</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="nb">dict</span><span class="p">)</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| </dd></dl> |
| |
| <dl class="class"> |
| <dt id="mock.NonCallableMock"> |
| <em class="property">class </em><tt class="descname">NonCallableMock</tt><big>(</big><em>spec=None</em>, <em>wraps=None</em>, <em>name=None</em>, <em>spec_set=None</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.NonCallableMock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A non-callable version of <cite>Mock</cite>. The constructor parameters have the same |
| meaning of <cite>Mock</cite>, with the exception of <cite>return_value</cite> and <cite>side_effect</cite> |
| which have no meaning on a non-callable mock.</p> |
| </dd></dl> |
| |
| <p>Mock objects that use a class or an instance as a <cite>spec</cite> or <cite>spec_set</cite> are able |
| to pass <cite>isintance</cite> tests:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">spec</span><span class="o">=</span><span class="n">SomeClass</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="nb">isinstance</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="n">SomeClass</span><span class="p">)</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">spec_set</span><span class="o">=</span><span class="n">SomeClass</span><span class="p">())</span> |
| <span class="gp">>>> </span><span class="nb">isinstance</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="n">SomeClass</span><span class="p">)</span> |
| <span class="go">True</span> |
| </pre></div> |
| </div> |
| <p>The <cite>Mock</cite> classes have support for mocking magic methods. See <a class="reference internal" href="magicmock.html#magic-methods"><em>magic |
| methods</em></a> for the full details.</p> |
| <p>The mock classes and the <a class="reference internal" href="patch.html#mock.patch" title="mock.patch"><tt class="xref py py-func docutils literal"><span class="pre">patch()</span></tt></a> decorators all take arbitrary keyword |
| arguments for configuration. For the <cite>patch</cite> decorators the keywords are |
| passed to the constructor of the mock being created. The keyword arguments |
| are for configuring attributes of the mock:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">attribute</span><span class="o">=</span><span class="mi">3</span><span class="p">,</span> <span class="n">other</span><span class="o">=</span><span class="s">'fish'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">attribute</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">other</span> |
| <span class="go">'fish'</span> |
| </pre></div> |
| </div> |
| <p>The return value and side effect of child mocks can be set in the same way, |
| using dotted notation. As you can’t use dotted names directly in a call you |
| have to create a dictionary and unpack it using <cite>**</cite>:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">attrs</span> <span class="o">=</span> <span class="p">{</span><span class="s">'method.return_value'</span><span class="p">:</span> <span class="mi">3</span><span class="p">,</span> <span class="s">'other.side_effect'</span><span class="p">:</span> <span class="ne">KeyError</span><span class="p">}</span> |
| <span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">Mock</span><span class="p">(</span><span class="n">some_attribute</span><span class="o">=</span><span class="s">'eggs'</span><span class="p">,</span> <span class="o">**</span><span class="n">attrs</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">some_attribute</span> |
| <span class="go">'eggs'</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">method</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">other</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">KeyError</span> |
| </pre></div> |
| </div> |
| <dl class="class"> |
| <dt id="mock.PropertyMock"> |
| <em class="property">class </em><tt class="descname">PropertyMock</tt><big>(</big><em>*args</em>, <em>**kwargs</em><big>)</big><a class="headerlink" href="#mock.PropertyMock" title="Permalink to this definition">¶</a></dt> |
| <dd><p>A mock intended to be used as a property, or other descriptor, on a class. |
| <cite>PropertyMock</cite> provides <cite>__get__</cite> and <cite>__set__</cite> methods so you can specify |
| a return value when it is fetched.</p> |
| <p>Fetching a <cite>PropertyMock</cite> instance from an object calls the mock, with |
| no args. Setting it calls the mock with the value being set.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="k">class</span> <span class="nc">Foo</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="nd">@property</span> |
| <span class="gp">... </span> <span class="k">def</span> <span class="nf">foo</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="s">'something'</span> |
| <span class="gp">... </span> <span class="nd">@foo.setter</span> |
| <span class="gp">... </span> <span class="k">def</span> <span class="nf">foo</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">value</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">pass</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="k">with</span> <span class="n">patch</span><span class="p">(</span><span class="s">'__main__.Foo.foo'</span><span class="p">,</span> <span class="n">new_callable</span><span class="o">=</span><span class="n">PropertyMock</span><span class="p">)</span> <span class="k">as</span> <span class="n">mock_foo</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="n">mock_foo</span><span class="o">.</span><span class="n">return_value</span> <span class="o">=</span> <span class="s">'mockity-mock'</span> |
| <span class="gp">... </span> <span class="n">this_foo</span> <span class="o">=</span> <span class="n">Foo</span><span class="p">()</span> |
| <span class="gp">... </span> <span class="k">print</span> <span class="n">this_foo</span><span class="o">.</span><span class="n">foo</span> |
| <span class="gp">... </span> <span class="n">this_foo</span><span class="o">.</span><span class="n">foo</span> <span class="o">=</span> <span class="mi">6</span> |
| <span class="gp">...</span> |
| <span class="go">mockity-mock</span> |
| <span class="gp">>>> </span><span class="n">mock_foo</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call(), call(6)]</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <p>Because of the way mock attributes are stored you can’t directly attach a |
| <cite>PropertyMock</cite> to a mock object. Instead you can attach it to the mock type |
| object:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">p</span> <span class="o">=</span> <span class="n">PropertyMock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="mi">3</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="nb">type</span><span class="p">(</span><span class="n">m</span><span class="p">)</span><span class="o">.</span><span class="n">foo</span> <span class="o">=</span> <span class="n">p</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">foo</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">p</span><span class="o">.</span><span class="n">assert_called_once_with</span><span class="p">()</span> |
| </pre></div> |
| </div> |
| <span class="target" id="index-5"></span></div> |
| <div class="section" id="calling"> |
| <span id="index-6"></span><h1>Calling<a class="headerlink" href="#calling" title="Permalink to this headline">¶</a></h1> |
| <p>Mock objects are callable. The call will return the value set as the |
| <a class="reference internal" href="#mock.Mock.return_value" title="mock.Mock.return_value"><tt class="xref py py-attr docutils literal"><span class="pre">return_value</span></tt></a> attribute. The default return value is a new Mock |
| object; it is created the first time the return value is accessed (either |
| explicitly or by calling the Mock) - but it is stored and the same one |
| returned each time.</p> |
| <p>Calls made to the object will be recorded in the attributes |
| like <a class="reference internal" href="#mock.Mock.call_args" title="mock.Mock.call_args"><tt class="xref py py-attr docutils literal"><span class="pre">call_args</span></tt></a> and <a class="reference internal" href="#mock.Mock.call_args_list" title="mock.Mock.call_args_list"><tt class="xref py py-attr docutils literal"><span class="pre">call_args_list</span></tt></a>.</p> |
| <p>If <a class="reference internal" href="#mock.Mock.side_effect" title="mock.Mock.side_effect"><tt class="xref py py-attr docutils literal"><span class="pre">side_effect</span></tt></a> is set then it will be called after the call has |
| been recorded, so if <cite>side_effect</cite> raises an exception the call is still |
| recorded.</p> |
| <p>The simplest way to make a mock raise an exception when called is to make |
| <a class="reference internal" href="#mock.Mock.side_effect" title="mock.Mock.side_effect"><tt class="xref py py-attr docutils literal"><span class="pre">side_effect</span></tt></a> an exception class or instance:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="ne">IndexError</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">(</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">)</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">IndexError</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call(1, 2, 3)]</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="ne">KeyError</span><span class="p">(</span><span class="s">'Bang!'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">(</span><span class="s">'two'</span><span class="p">,</span> <span class="s">'three'</span><span class="p">,</span> <span class="s">'four'</span><span class="p">)</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">KeyError</span>: <span class="n">'Bang!'</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call(1, 2, 3), call('two', 'three', 'four')]</span> |
| </pre></div> |
| </div> |
| <p>If <cite>side_effect</cite> is a function then whatever that function returns is what |
| calls to the mock return. The <cite>side_effect</cite> function is called with the |
| same arguments as the mock. This allows you to vary the return value of the |
| call dynamically, based on the input:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="k">def</span> <span class="nf">side_effect</span><span class="p">(</span><span class="n">value</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="n">value</span> <span class="o">+</span> <span class="mi">1</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="n">side_effect</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> |
| <span class="go">2</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call(1), call(2)]</span> |
| </pre></div> |
| </div> |
| <p>If you want the mock to still return the default return value (a new mock), or |
| any set return value, then there are two ways of doing this. Either return |
| <cite>mock.return_value</cite> from inside <cite>side_effect</cite>, or return <a class="reference internal" href="sentinel.html#mock.DEFAULT" title="mock.DEFAULT"><tt class="xref py py-data docutils literal"><span class="pre">DEFAULT</span></tt></a>:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="k">def</span> <span class="nf">side_effect</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="n">m</span><span class="o">.</span><span class="n">return_value</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="n">side_effect</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">return_value</span> <span class="o">=</span> <span class="mi">3</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="k">def</span> <span class="nf">side_effect</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="n">DEFAULT</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="n">side_effect</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">3</span> |
| </pre></div> |
| </div> |
| <p>To remove a <cite>side_effect</cite>, and return to the default behaviour, set the |
| <cite>side_effect</cite> to <cite>None</cite>:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="mi">6</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="k">def</span> <span class="nf">side_effect</span><span class="p">(</span><span class="o">*</span><span class="n">args</span><span class="p">,</span> <span class="o">**</span><span class="n">kwargs</span><span class="p">):</span> |
| <span class="gp">... </span> <span class="k">return</span> <span class="mi">3</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="n">side_effect</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="o">.</span><span class="n">side_effect</span> <span class="o">=</span> <span class="bp">None</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">6</span> |
| </pre></div> |
| </div> |
| <p>The <cite>side_effect</cite> can also be any iterable object. Repeated calls to the mock |
| will return values from the iterable (until the iterable is exhausted and |
| a <cite>StopIteration</cite> is raised):</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="p">[</span><span class="mi">1</span><span class="p">,</span> <span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">])</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">1</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">2</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">3</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">StopIteration</span> |
| </pre></div> |
| </div> |
| <p>If any members of the iterable are exceptions they will be raised instead of |
| returned:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">iterable</span> <span class="o">=</span> <span class="p">(</span><span class="mi">33</span><span class="p">,</span> <span class="ne">ValueError</span><span class="p">,</span> <span class="mi">66</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">side_effect</span><span class="o">=</span><span class="n">iterable</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">33</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="c">...</span> |
| <span class="gr">ValueError</span> |
| <span class="gp">>>> </span><span class="n">m</span><span class="p">()</span> |
| <span class="go">66</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="deleting-attributes"> |
| <span id="id2"></span><h1>Deleting Attributes<a class="headerlink" href="#deleting-attributes" title="Permalink to this headline">¶</a></h1> |
| <p>Mock objects create attributes on demand. This allows them to pretend to be |
| objects of any type.</p> |
| <p>You may want a mock object to return <cite>False</cite> to a <cite>hasattr</cite> call, or raise an |
| <cite>AttributeError</cite> when an attribute is fetched. You can do this by providing |
| an object as a <cite>spec</cite> for a mock, but that isn’t always convenient.</p> |
| <p>You “block” attributes by deleting them. Once deleted, accessing an attribute |
| will raise an <cite>AttributeError</cite>.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="nb">hasattr</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="s">'m'</span><span class="p">)</span> |
| <span class="go">True</span> |
| <span class="gp">>>> </span><span class="k">del</span> <span class="n">mock</span><span class="o">.</span><span class="n">m</span> |
| <span class="gp">>>> </span><span class="nb">hasattr</span><span class="p">(</span><span class="n">mock</span><span class="p">,</span> <span class="s">'m'</span><span class="p">)</span> |
| <span class="go">False</span> |
| <span class="gp">>>> </span><span class="k">del</span> <span class="n">mock</span><span class="o">.</span><span class="n">f</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">f</span> |
| <span class="gt">Traceback (most recent call last):</span> |
| <span class="o">...</span> |
| <span class="gr">AttributeError</span>: <span class="n">f</span> |
| </pre></div> |
| </div> |
| </div> |
| <div class="section" id="attaching-mocks-as-attributes"> |
| <h1>Attaching Mocks as Attributes<a class="headerlink" href="#attaching-mocks-as-attributes" title="Permalink to this headline">¶</a></h1> |
| <p>When you attach a mock as an attribute of another mock (or as the return |
| value) it becomes a “child” of that mock. Calls to the child are recorded in |
| the <a class="reference internal" href="#mock.Mock.method_calls" title="mock.Mock.method_calls"><tt class="xref py py-attr docutils literal"><span class="pre">method_calls</span></tt></a> and <a class="reference internal" href="#mock.Mock.mock_calls" title="mock.Mock.mock_calls"><tt class="xref py py-attr docutils literal"><span class="pre">mock_calls</span></tt></a> attributes of the |
| parent. This is useful for configuring child mocks and then attaching them to |
| the parent, or for attaching mocks to a parent that records all calls to the |
| children and allows you to make assertions about the order of calls between |
| mocks:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">parent</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">child1</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">child2</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">parent</span><span class="o">.</span><span class="n">child1</span> <span class="o">=</span> <span class="n">child1</span> |
| <span class="gp">>>> </span><span class="n">parent</span><span class="o">.</span><span class="n">child2</span> <span class="o">=</span> <span class="n">child2</span> |
| <span class="gp">>>> </span><span class="n">child1</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">child2</span><span class="p">(</span><span class="mi">2</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">parent</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call.child1(1), call.child2(2)]</span> |
| </pre></div> |
| </div> |
| <p>The exception to this is if the mock has a name. This allows you to prevent |
| the “parenting” if for some reason you don’t want it to happen.</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">mock</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">not_a_child</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">(</span><span class="n">name</span><span class="o">=</span><span class="s">'not-a-child'</span><span class="p">)</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">attribute</span> <span class="o">=</span> <span class="n">not_a_child</span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">attribute</span><span class="p">()</span> |
| <span class="go"><MagicMock name='not-a-child()' id='...'></span> |
| <span class="gp">>>> </span><span class="n">mock</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[]</span> |
| </pre></div> |
| </div> |
| <p>Mocks created for you by <a class="reference internal" href="patch.html#mock.patch" title="mock.patch"><tt class="xref py py-func docutils literal"><span class="pre">patch()</span></tt></a> are automatically given names. To |
| attach mocks that have names to a parent you use the <a class="reference internal" href="#mock.Mock.attach_mock" title="mock.Mock.attach_mock"><tt class="xref py py-meth docutils literal"><span class="pre">attach_mock()</span></tt></a> |
| method:</p> |
| <div class="highlight-python"><div class="highlight"><pre><span class="gp">>>> </span><span class="n">thing1</span> <span class="o">=</span> <span class="nb">object</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">thing2</span> <span class="o">=</span> <span class="nb">object</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="n">parent</span> <span class="o">=</span> <span class="n">MagicMock</span><span class="p">()</span> |
| <span class="gp">>>> </span><span class="k">with</span> <span class="n">patch</span><span class="p">(</span><span class="s">'__main__.thing1'</span><span class="p">,</span> <span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> <span class="k">as</span> <span class="n">child1</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="k">with</span> <span class="n">patch</span><span class="p">(</span><span class="s">'__main__.thing2'</span><span class="p">,</span> <span class="n">return_value</span><span class="o">=</span><span class="bp">None</span><span class="p">)</span> <span class="k">as</span> <span class="n">child2</span><span class="p">:</span> |
| <span class="gp">... </span> <span class="n">parent</span><span class="o">.</span><span class="n">attach_mock</span><span class="p">(</span><span class="n">child1</span><span class="p">,</span> <span class="s">'child1'</span><span class="p">)</span> |
| <span class="gp">... </span> <span class="n">parent</span><span class="o">.</span><span class="n">attach_mock</span><span class="p">(</span><span class="n">child2</span><span class="p">,</span> <span class="s">'child2'</span><span class="p">)</span> |
| <span class="gp">... </span> <span class="n">child1</span><span class="p">(</span><span class="s">'one'</span><span class="p">)</span> |
| <span class="gp">... </span> <span class="n">child2</span><span class="p">(</span><span class="s">'two'</span><span class="p">)</span> |
| <span class="gp">...</span> |
| <span class="gp">>>> </span><span class="n">parent</span><span class="o">.</span><span class="n">mock_calls</span> |
| <span class="go">[call.child1('one'), call.child2('two')]</span> |
| </pre></div> |
| </div> |
| <hr class="docutils" /> |
| <table class="docutils footnote" frame="void" id="id3" rules="none"> |
| <colgroup><col class="label" /><col /></colgroup> |
| <tbody valign="top"> |
| <tr><td class="label"><a class="fn-backref" href="#id1">[1]</a></td><td>The only exceptions are magic methods and attributes (those that have |
| leading and trailing double underscores). Mock doesn’t create these but |
| instead of raises an <tt class="docutils literal"><span class="pre">AttributeError</span></tt>. This is because the interpreter |
| will often implicitly request these methods, and gets <em>very</em> confused to |
| get a new Mock object when it expects a magic method. If you need magic |
| method support see <a class="reference internal" href="magicmock.html#magic-methods"><em>magic methods</em></a>.</td></tr> |
| </tbody> |
| </table> |
| </div> |
| |
| |
| </div> |
| </div> |
| </div> |
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| <h3><a href="index.html">Table Of Contents</a></h3> |
| <ul> |
| <li><a class="reference internal" href="#">The Mock Class</a></li> |
| <li><a class="reference internal" href="#calling">Calling</a></li> |
| <li><a class="reference internal" href="#deleting-attributes">Deleting Attributes</a></li> |
| <li><a class="reference internal" href="#attaching-mocks-as-attributes">Attaching Mocks as Attributes</a></li> |
| </ul> |
| |
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