Remove asserting about current backend at the end of mpl_test_settings.

anntzer · anntzer · commit 9b1972dbb25b · 2018-09-06T21:07:42.000+02:00
The assertion was added while debugging the backend-switching PRs, but
it is not necessary anymore and breaks the mplcairo test suite (which
imports the mpl_test_settings fixture from matplotlib, but doesn't set
the backend to agg (it doesn't use matplotlib's pytest_configure).

RC per breakage to mplcairo test suite.
diff --git a/lib/matplotlib/testing/conftest.py b/lib/matplotlib/testing/conftest.py
@@ -53,8 +53,6 @@ def mpl_test_settings(request):
             if backend is not None:
                 plt.switch_backend(prev_backend)
 
-    assert matplotlib.get_backend() == 'agg'
-
 
 @pytest.fixture
 def mpl_image_comparison_parameters(request, extension):
