TST: test that setting alpha keeps rest of color ok

jklymak · jklymak · commit af43dae448d5 · 2018-07-18T21:31:01.000-07:00
diff --git a/lib/matplotlib/tests/test_legend.py b/lib/matplotlib/tests/test_legend.py
@@ -543,3 +543,12 @@ def test_draggable():
     with pytest.warns(MatplotlibDeprecationWarning):
         legend.draggable()
     assert not legend.get_draggable()
+
+
+def test_alpha_handles():
+    x, n, hh = plt.hist([1, 2, 3], alpha=0.25, label='data', color='red')
+    legend = plt.legend()
+    for lh in legend.legendHandles:
+        lh.set_alpha(1.0)
+    assert lh.get_facecolor()[:-1] == hh[1].get_facecolor()[:-1]
+    assert lh.get_edgecolor()[:-1] == hh[1].get_edgecolor()[:-1]
