Increase tolerance on multi-font tests

QuLogic · QuLogic · commit 295c0a677d76 · 2022-08-18T03:35:28.000-04:00
Apparently Ubuntu 20.04 (our CI system) has Zen Hei 0.9.45, while Fedora
has 0.9.46. These versions have slight differences in the glyphs. This
tolerance should still be small enough to catch completely missing
glyphs though.
diff --git a/lib/matplotlib/tests/test_backend_pdf.py b/lib/matplotlib/tests/test_backend_pdf.py
@@ -387,7 +387,7 @@ def test_glyphs_subset():
     assert subfont.get_num_glyphs() == nosubfont.get_num_glyphs()
 
 
-@image_comparison(["multi_font_type3.pdf"])
+@image_comparison(["multi_font_type3.pdf"], tol=4.6)
 def test_multi_font_type3():
     fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
     if Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
@@ -400,7 +400,7 @@ def test_multi_font_type3():
     fig.text(0.15, 0.475, "There are 几个汉字 in between!")
 
 
-@image_comparison(["multi_font_type42.pdf"])
+@image_comparison(["multi_font_type42.pdf"], tol=2.2)
 def test_multi_font_type42():
     fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
     if Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
diff --git a/lib/matplotlib/tests/test_backend_ps.py b/lib/matplotlib/tests/test_backend_ps.py
@@ -274,7 +274,7 @@ def test_no_duplicate_definition():
     assert max(Counter(wds).values()) == 1
 
 
-@image_comparison(["multi_font_type3.eps"])
+@image_comparison(["multi_font_type3.eps"], tol=0.51)
 def test_multi_font_type3():
     fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
     if Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
@@ -287,7 +287,7 @@ def test_multi_font_type3():
     fig.text(0.15, 0.475, "There are 几个汉字 in between!")
 
 
-@image_comparison(["multi_font_type42.eps"])
+@image_comparison(["multi_font_type42.eps"], tol=1.6)
 def test_multi_font_type42():
     fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
     if Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
diff --git a/lib/matplotlib/tests/test_backend_svg.py b/lib/matplotlib/tests/test_backend_svg.py
@@ -470,7 +470,7 @@ def test_svg_metadata():
     assert values == metadata['Keywords']
 
 
-@image_comparison(["multi_font_aspath.svg"])
+@image_comparison(["multi_font_aspath.svg"], tol=1.8)
 def test_multi_font_type3():
     fp = fm.FontProperties(family=["WenQuanYi Zen Hei"])
     if Path(fm.findfont(fp)).name != "wqy-zenhei.ttc":
