TST: change from pytest xfail to pytest raises

kate-perkins · kate-perkins · commit d79202f4c4fe · 2020-07-14T20:46:35.000-04:00
Passing origin as a keyword argument should raise a type error, so test_specgram_origin_kwarg should raise an exception. Therefore, raises is a more precise check than xfail.
diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -4117,13 +4117,13 @@ def test_specgram_origin_rcparam(fig_test, fig_ref):
     fig_test.subplots().specgram(signal)
 
 
-@pytest.mark.xfail(strict=True)
 def test_specgram_origin_kwarg():
-    """Ensure passing origin as a kwarg raises an exception."""
+    """Ensure passing origin as a kwarg raises a TypeError."""
     t = np.arange(500)
     signal = np.sin(t)
 
-    plt.specgram(signal, origin='lower')
+    with pytest.raises(TypeError):
+        plt.specgram(signal, origin='lower')
 
 
 @image_comparison(
