matplotlib
diff --git a/‎lib/mpl_toolkits/tests/baseline_images/test_axes_grid1/twin_axes_empty_and_removed.png
-3.37 KB b/‎lib/mpl_toolkits/tests/baseline_images/test_axes_grid1/twin_axes_empty_and_removed.png
-3.37 KB
diff --git a/‎lib/mpl_toolkits/tests/test_axes_grid1.py
Lines changed: 24 additions & 7 deletions b/‎lib/mpl_toolkits/tests/test_axes_grid1.py
Lines changed: 24 additions & 7 deletions
@@ -3,6 +3,7 @@
 
 from matplotlib.externals import six
 
+import matplotlib
 import matplotlib.pyplot as plt
 from matplotlib.testing.decorators import image_comparison
 from mpl_toolkits.axes_grid1 import make_axes_locatable, host_subplot
@@ -55,13 +56,29 @@ def test_divider_append_axes():
 @image_comparison(baseline_images=['twin_axes_empty_and_removed'],
     extensions=["png"])
 def test_twin_axes_empty_and_removed():
-    a = [ "twinx", "twiny", "twin" ]
-    b = [ None, "remove" ]
-    for i, (twin, op) in enumerate(product(a, b), 1):
-        h = host_subplot(len(a), len(b), i)
-        t = getattr(h, twin)()
-        getattr(t, op)() if op else None
-        h.text(0.5, 0.5, twin + (" & {0}".format(op) if op else ""),
+    # Purely cosmetic font changes (avoid overlap)
+    matplotlib.rcParams.update({"font.size": 8})
+    matplotlib.rcParams.update({"xtick.labelsize": 8})
+    matplotlib.rcParams.update({"ytick.labelsize": 8})
+    generators = [ "twinx", "twiny", "twin" ]
+    modifiers = [ "", "host invisible", "twin removed", "twin invisible",
+        "twin removed\nhost invisible" ]
+    # Unmodified host subplot at the beginning for reference
+    h = host_subplot(len(modifiers)+1, len(generators), 2)
+    h.text(0.5, 0.5, "host_subplot", horizontalalignment="center",
+        verticalalignment="center")
+    # Host subplots with various modifications (twin*, visibility) applied
+    for i, (mod, gen) in enumerate(product(modifiers, generators),
+        len(generators)+1):
+        h = host_subplot(len(modifiers)+1, len(generators), i)
+        t = getattr(h, gen)()
+        if "twin invisible" in mod:
+            t.axis[:].set_visible(False)
+        if "twin removed" in mod:
+            t.remove()
+        if "host invisible" in mod:
+            h.axis[:].set_visible(False)
+        h.text(0.5, 0.5, gen + ("\n" + mod if mod else ""),
             horizontalalignment="center", verticalalignment="center")
     plt.subplots_adjust(wspace=0.5, hspace=1)