matplotlib · jklymak · Dec 20, 2017
diff --git a/lib/matplotlib/tests/test_legend.py b/lib/matplotlib/tests/test_legend.py
@@ -16,6 +16,7 @@
 import matplotlib.transforms as mtransforms
 import matplotlib.collections as mcollections
 from matplotlib.legend_handler import HandlerTuple
+import matplotlib.legend as mlegend
 import inspect
 
 
@@ -423,6 +424,22 @@ def test_nanscatter():
     ax.grid(True)
 
 
+def test_legend_repeatcheckok():
+    fig, ax = plt.subplots()
+    ax.scatter(0.0, 1.0, color='k', marker='o', label='test')
+    ax.scatter(0.5, 0.0, color='r', marker='v', label='test')
+    hl = ax.legend()
+    hand, lab = mlegend._get_legend_handles_labels([ax])
+    assert len(lab) == 2
+    fig, ax = plt.subplots()
+    ax.scatter(0.0, 1.0, color='k', marker='o', label='test')
+    ax.scatter(0.5, 0.0, color='k', marker='v', label='test')
+    hl = ax.legend()
+    hand, lab = mlegend._get_legend_handles_labels([ax])
+    assert len(lab) == 1
+
+
+
 @image_comparison(baseline_images=['not_covering_scatter'], extensions=['png'])
 def test_not_covering_scatter():
     colors = ['b', 'g', 'r']