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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"

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<title>matplotlib.testing — Matplotlib 3.1.0 documentation</title>

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<h1>Source code for matplotlib.testing</h1><div class="highlight"><pre>

<span class="sd">Helper functions for testing.</span>

<span class="kn">import</span> <span class="nn">locale</span>

<span class="kn">import</span> <span class="nn">logging</span>

<span class="kn">import</span> <span class="nn">warnings</span>

<span class="kn">import</span> <span class="nn">matplotlib</span> <span class="k">as</span> <span class="nn">mpl</span>

<span class="kn">from</span> <span class="nn">matplotlib</span> <span class="k">import</span> <span class="n">cbook</span>

<span class="n">_log</span> <span class="o">=</span> <span class="n">logging</span><span class="o">.</span><span class="n">getLogger</span><span class="p">(</span><span class="vm">__name__</span><span class="p">)</span>

<div class="viewcode-block" id="is_called_from_pytest"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.is_called_from_pytest">[docs]</a><span class="k">def</span> <span class="nf">is_called_from_pytest</span><span class="p">():</span>

<span class="sd">"""Whether we are in a pytest run."""</span>

<span class="k">return</span> <span class="nb">getattr</span><span class="p">(</span><span class="n">mpl</span><span class="p">,</span> <span class="s1">'_called_from_pytest'</span><span class="p">,</span> <span class="kc">False</span><span class="p">)</span></div>

<div class="viewcode-block" id="set_font_settings_for_testing"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.set_font_settings_for_testing">[docs]</a><span class="k">def</span> <span class="nf">set_font_settings_for_testing</span><span class="p">():</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">rcParams</span><span class="p">[</span><span class="s1">'font.family'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'DejaVu Sans'</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">rcParams</span><span class="p">[</span><span class="s1">'text.hinting'</span><span class="p">]</span> <span class="o">=</span> <span class="kc">False</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">rcParams</span><span class="p">[</span><span class="s1">'text.hinting_factor'</span><span class="p">]</span> <span class="o">=</span> <span class="mi">8</span></div>

<div class="viewcode-block" id="set_reproducibility_for_testing"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.set_reproducibility_for_testing">[docs]</a><span class="k">def</span> <span class="nf">set_reproducibility_for_testing</span><span class="p">():</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">rcParams</span><span class="p">[</span><span class="s1">'svg.hashsalt'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'matplotlib'</span></div>

<div class="viewcode-block" id="setup"><a class="viewcode-back" href="../../api/testing_api.html#matplotlib.testing.setup">[docs]</a><span class="k">def</span> <span class="nf">setup</span><span class="p">():</span>

<span class="c1"># The baseline images are created in this locale, so we should use</span>

<span class="c1"># it during all of the tests.</span>

<span class="n">locale</span><span class="o">.</span><span class="n">setlocale</span><span class="p">(</span><span class="n">locale</span><span class="o">.</span><span class="n">LC_ALL</span><span class="p">,</span> <span class="s1">'en_US.UTF-8'</span><span class="p">)</span>

<span class="k">except</span> <span class="n">locale</span><span class="o">.</span><span class="n">Error</span><span class="p">:</span>

<span class="k">except</span> <span class="n">locale</span><span class="o">.</span><span class="n">Error</span><span class="p">:</span>

<span class="n">_log</span><span class="o">.</span><span class="n">warning</span><span class="p">(</span>

<span class="s2">"Could not set locale to English/United States. "</span>

<span class="s2">"Some date-related tests may fail."</span><span class="p">)</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">use</span><span class="p">(</span><span class="s1">'Agg'</span><span class="p">,</span> <span class="n">force</span><span class="o">=</span><span class="kc">True</span><span class="p">,</span> <span class="n">warn</span><span class="o">=</span><span class="kc">False</span><span class="p">)</span> <span class="c1"># use Agg backend for these tests</span>

<span class="k">with</span> <span class="n">cbook</span><span class="o">.</span><span class="n">_suppress_matplotlib_deprecation_warning</span><span class="p">():</span>

<span class="n">mpl</span><span class="o">.</span><span class="n">rcdefaults</span><span class="p">()</span> <span class="c1"># Start with all defaults</span>

<span class="c1"># These settings *must* be hardcoded for running the comparison tests and</span>

<span class="c1"># are not necessarily the default values as specified in rcsetup.py.</span>

<span class="n">set_font_settings_for_testing</span><span class="p">()</span>

<span class="n">set_reproducibility_for_testing</span><span class="p">()</span></div>

</pre></div>

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