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authorNed Batchelder <ned@nedbatchelder.com>2015-10-06 07:14:18 -0400
committerNed Batchelder <ned@nedbatchelder.com>2015-10-06 07:14:18 -0400
commit56e61431209ac76911f25eee3374c9a0b7d7b8ed (patch)
tree5d1b41892bd26b552dead0878b96f0cdec75d68b /coverage/files.py
parentfb6c870536dbfe556429ac6af34e72459b6c8f32 (diff)
downloadpython-coveragepy-56e61431209ac76911f25eee3374c9a0b7d7b8ed.tar.gz
Protect ourselves from mock'ed os. #416
Diffstat (limited to 'coverage/files.py')
-rw-r--r--coverage/files.py4
1 files changed, 3 insertions, 1 deletions
diff --git a/coverage/files.py b/coverage/files.py
index 2b8727d..0b5651c 100644
--- a/coverage/files.py
+++ b/coverage/files.py
@@ -13,12 +13,14 @@ import sys
from coverage import env
from coverage.backward import unicode_class
-from coverage.misc import CoverageException, join_regex
+from coverage.misc import CoverageException, join_regex, isolate_module
RELATIVE_DIR = None
CANONICAL_FILENAME_CACHE = {}
+os = isolate_module(os)
+
def set_relative_directory():
"""Set the directory that `relative_filename` will be relative to."""