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POCan a mock be reused for multiple expected calls with different return values in Hippo Mocks?
 

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  1. POCan a mock be reused for multiple expected calls with different return values in Hippo Mocks?
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    <p>I'm using Hippo Mocks to great success, but I have a situation that I can't quite figure out how to set up properly. The code under test looks sorta like this:</p> <pre><code>auto firstName = record.at("firstName").getValue(); auto lastName = record.at("lastName").getValue(); </code></pre> <p>Where <code>IRecord::at()</code> returns a <code>IColumn&amp;</code>, which has a pure virtual <code>getValue()</code> method. I'm trying to test my code with mocked versions of <code>Irecord</code> and <code>IColumn</code>:</p> <pre><code>auto mockRec = mocks.InterfaceMock&lt;IRecord&gt;(); auto mockCol = mocks.InterfaceMock&lt;IColumn&gt;(); </code></pre> <p>I can set up the expectations for <code>firstName</code> just fine:</p> <pre><code>mocks.OnCall(mockRec, IRecord::at).With("firstName").Return(std::ref(*mockCol)); mocks.OnCall(mockCol, IColumn::getValue).Return(std::string("John"))); </code></pre> <p>But I would like to reuse the <code>IColumn</code> mock for the next expectation for <code>lastName</code>.</p> <pre><code>mocks.OnCall(mockRec, IRecord::at).With("lastName").Return(std::ref(*mockCol)); mocks.OnCall(mockCol, IColumn::getValue).Return(std::string("Doe"))); </code></pre> <p>But when I run this, Hippo Mocks returns "John" for both <code>getValue()</code> calls.</p> <p>Following along with the <a href="https://www.assembla.com/spaces/hippomocks/wiki/Tutorial_3_0" rel="nofollow">tutorial</a>, I tried to restrict the order of "firstName" and "lastName" calls:</p> <pre><code>auto&amp; firstCall = mocks.OnCall(mockRec, IRecord::at).With("firstName").Return(std::ref(*mockCol)); mocks.OnCall(mockCol, IColumn::getValue).After(firstCall).Return(std::string("John"))); auto&amp; lastCall = mocks.OnCall(mockRec, IRecord::at).With("lastName").Return(std::ref(*mockCol)); mocks.OnCall(mockCol, IColumn::getValue).After(lastCall).Return(std::string("Doe"))); </code></pre> <p>But I still get "John" for both <code>getValue()</code> calls.</p> <p><strong>Q:</strong> Is it possible to reuse the <code>IColumn</code> interface and tell Hippo Mocks to return different values with each <code>getValue()</code> call like I need, or am I stuck creating a separate <code>IColumn</code> mock for each parameter? Note: My actual implementation will have more than two parameters, so reusing the <code>IColumn</code> mock reduces a lot of setup for each unit test.</p>
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    1. USBret Kuhns
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