Pastable version of Knowing mocha

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            <pre class="sunburst"><span style="color:#E28964;">def</span> <span style="color:#89BDFF;">test_should_create_image_if_necessary_before_trying_to_give_it_data</span>
  file <span style="color:#E28964;">=</span> <span style="color:#89BDFF;">mock</span>()
  file.<span style="color:#89BDFF;">expects</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>content_type</span>).<span style="color:#89BDFF;">returns</span>(<span style="color:#65B042;"><span style="color:#65B042;">'</span>jpg<span style="color:#65B042;">'</span></span>)
  file.<span style="color:#89BDFF;">expects</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>size</span>).<span style="color:#89BDFF;">returns</span>(<span style="color:#3387CC;">10</span>)
  file.<span style="color:#89BDFF;">expects</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>original_filename</span>).<span style="color:#89BDFF;">returns</span>(<span style="color:#65B042;"><span style="color:#65B042;">'</span>something.jpg<span style="color:#65B042;">'</span></span>)
  file.<span style="color:#89BDFF;">expects</span>(<span style="color:#3387CC;"><span style="color:#3387CC;">:</span>path</span>).<span style="color:#89BDFF;">returns</span>(<span style="color:#65B042;"><span style="color:#65B042;">'</span>/root?<span style="color:#65B042;">'</span></span>)
  
  assert_nothing_raised <span style="color:#E28964;">do</span>
    <span style="color:#3E87E3;"><span style="color:#3E87E3;">@</span>p</span>.<span style="color:#89BDFF;">uploaded_data</span> <span style="color:#E28964;">=</span> file
  <span style="color:#E28964;">end</span>
<span style="color:#E28964;">end</span>
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