Add lines+markers legend test

Author: robertoffmoura

plotly/matplotlylib/tests/test_renderer.py

@@ -22,6 +22,22 @@ def test_native_legend_enabled_when_matplotlib_legend_present():
     assert plotly_fig.data[1].name == "Line 2"
 
 
+def test_lines_markers_legend_plot():
+    x = [0, 1]
+    y = [0, 1]
+    label = "label"
+    plt.figure()
+    plt.plot(x, y, "o-", label=label)
+    plt.legend()
+
+    plotly_fig = tls.mpl_to_plotly(plt.gcf())
+
+    assert plotly_fig.data[0].mode == "lines+markers"
+    assert plotly_fig.data[0].x == tuple(x)
+    assert plotly_fig.data[0].y == tuple(y)
+    assert plotly_fig.data[0].name == "label"
+
+
 def test_no_fake_legend_shapes_with_native_legend():
     """Test that fake legend shapes are not created when using native legend."""
     fig, ax = plt.subplots()