Check if fallback font is available

aitikgupta · tacaswell · commit 8181be35f7e2 · 2022-02-18T17:18:01.000-05:00
diff --git a/lib/matplotlib/tests/test_agg.py b/lib/matplotlib/tests/test_agg.py
@@ -1,4 +1,5 @@
 import io
+import pathlib
 
 import numpy as np
 from numpy.testing import assert_array_almost_equal
@@ -7,11 +8,12 @@
 
 
 from matplotlib import (
-    collections, path, pyplot as plt, transforms as mtransforms, rcParams)
+    collections, path, pyplot as plt, transforms as mtransforms, rcParams,
+    font_manager as fm
+)
 from matplotlib.backends.backend_agg import RendererAgg
 from matplotlib.figure import Figure
 from matplotlib.image import imread
-from matplotlib.path import Path
 from matplotlib.testing.decorators import image_comparison
 from matplotlib.transforms import IdentityTransform
 
@@ -296,7 +298,7 @@ def chunk_limit_setup():
     gc.set_linewidth(1)
     gc.set_foreground('r')
     # make a Path
-    p = Path(np.vstack((x, y)).T)
+    p = path.Path(np.vstack((x, y)).T)
     # effectively disable path simplification (but leaving it "on")
     p.simplify_threshold = 0
 
@@ -353,6 +355,10 @@ def test_chunksize_toobig_chunks(chunk_limit_setup):
 
 @image_comparison(["font_fallback.png"])
 def test_font_fallback():
+    fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
+    if pathlib.Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
+        pytest.skip("Font may be missing")
+
     plt.rc('font', family=['DejaVu Sans', 'WenQuanYi Zen Hei'], size=15)
 
     fig, ax = plt.subplots()
