Add error handling for locale

Author: devRD

lib/matplotlib/tests/test_ticker.py

@@ -1449,20 +1449,21 @@ def test_latex(self, is_latex, usetex, expected):
             assert fmt.format_pct(50, 100) == expected
 
 
-@pytest.mark.xfail(locale != "fy_DE.UTF-8",
-                   reason="Locale 'fy_DE.UTF-8' is not supported")
+@pytest.mark.xfail
 def test_locale_comma():
     currentLocale = locale.getlocale()
-    locale.setlocale(locale.LC_ALL, 'fy_DE.UTF-8')
-    ticks = mticker.ScalarFormatter(useMathText=True, useLocale=True)
-    fmt = '$\\mathdefault{%1.1f}$'
-    x = ticks._format_maybe_minus_and_locale(fmt, 0.5)
-    assert x == '$\\mathdefault{0{,}5}$'
-    # Do not change , in the format string
-    fmt = ',$\\mathdefault{,%1.1f},$'
-    x = ticks._format_maybe_minus_and_locale(fmt, 0.5)
-    assert x == ',$\\mathdefault{,0{,}5},$'
-    locale.setlocale(locale.LC_ALL, currentLocale)
+    try:
+        locale.setlocale(locale.LC_ALL, 'fy_DE.UTF-8')
+        ticks = mticker.ScalarFormatter(useMathText=True, useLocale=True)
+        fmt = '$\\mathdefault{%1.1f}$'
+        x = ticks._format_maybe_minus_and_locale(fmt, 0.5)
+        assert x == '$\\mathdefault{0{,}5}$'
+        # Do not change , in the format string
+        fmt = ',$\\mathdefault{,%1.1f},$'
+        x = ticks._format_maybe_minus_and_locale(fmt, 0.5)
+        assert x == ',$\\mathdefault{,0{,}5},$'
+    finally:
+        locale.setlocale(locale.LC_ALL, currentLocale)
 
 
 def test_majformatter_type():