TST: test categorical

jklymak · jklymak · commit cd42a3f944ac · 2020-08-13T09:45:42.000-07:00
diff --git a/lib/matplotlib/tests/test_category.py b/lib/matplotlib/tests/test_category.py
@@ -297,5 +297,8 @@ def test_overriding_units_in_plot(fig_test, fig_ref):
         assert y_units is ax.yaxis.units
 
 
-def test_category_hist():
-    
+def test_hist():
+    fig, ax = plt.subplots()
+    n, bins, patches = ax.hist(['a', 'b', 'a', 'c', 'ff'])
+    assert n.shape == (10,)
+    np.testing.assert_allclose(n, [2., 0., 0., 1., 0., 0., 1., 0., 0., 1.])
