Merge pull request #14158 from anntzer/test_lazy_imports

QuLogic · web-flow · commit 959e9f3a903a · 2019-05-08T23:57:46.000-04:00
Fix test_lazy_imports in presence of $MPLBACKEND or matplotlibrc.
diff --git a/lib/matplotlib/tests/test_basic.py b/lib/matplotlib/tests/test_basic.py
@@ -1,4 +1,5 @@
 import builtins
+import os
 import subprocess
 import sys
 import textwrap
@@ -50,8 +51,6 @@ def test_lazy_imports():
     assert 'urllib.request' not in sys.modules
     """)
 
-    subprocess.check_call([
-        sys.executable,
-        '-c',
-        source
-    ])
+    subprocess.check_call(
+        [sys.executable, '-c', source],
+        env={**os.environ, "MPLBACKEND": "", "MATPLOTLIBRC": os.devnull})
