Add image comparison test.

stefmolin · stefmolin · commit 5ffb34e1e88c · 2022-09-10T15:15:56.000-04:00
diff --git a/lib/matplotlib/tests/baseline_images/test_axes/test_centered_bar_label_nonlinear.svg b/lib/matplotlib/tests/baseline_images/test_axes/test_centered_bar_label_nonlinear.svg
@@ -0,0 +1,166 @@
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+    <dc:date>2022-09-10T15:01:10.033044</dc:date>
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diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
@@ -7749,6 +7749,16 @@ def test_bar_label_location_center():
     assert labels[1].get_va() == 'center'
 
 
+@image_comparison(['test_centered_bar_label_nonlinear.svg'])
+def test_centered_bar_label_nonlinear():
+    _, ax = plt.subplots()
+    bar_container = ax.barh(['c', 'b', 'a'], [1_000, 5_000, 7_000])
+    ax.set_xscale('log')
+    ax.set_xlim(1, None)
+    ax.bar_label(bar_container, label_type='center')
+    ax.set_axis_off()
+
+
 def test_bar_label_location_errorbars():
     ax = plt.gca()
     xs, heights = [1, 2], [3, -4]
