Add test capturing failure. Ref #486.

1 files changed, 10 insertions, 0 deletions

diff --git a/setuptools/tests/test_unicode_utils.py b/setuptools/tests/test_unicode_utils.py
new file mode 100644
index 00000000..a24a9bd5
--- /dev/null
+++ b/setuptools/tests/test_unicode_utils.py
@@ -0,0 +1,10 @@
+from setuptools import unicode_utils
+
+
+def test_filesys_decode_fs_encoding_is_None(monkeypatch):
+    """
+    Test filesys_decode does not raise TypeError when
+    getfilesystemencoding returns None.
+    """
+    monkeypatch.setattr('sys.getfilesystemencoding', lambda: None)
+    unicode_utils.filesys_decode(b'test')