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-rw-r--r--lib/subunit/python/subunit/tests/test_run.py4
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/subunit/python/subunit/tests/test_run.py b/lib/subunit/python/subunit/tests/test_run.py
index 5a96bcf30e..10519ed086 100644
--- a/lib/subunit/python/subunit/tests/test_run.py
+++ b/lib/subunit/python/subunit/tests/test_run.py
@@ -14,7 +14,7 @@
# limitations under that license.
#
-from cStringIO import StringIO
+from testtools.compat import BytesIO
import unittest
from testtools import PlaceHolder
@@ -42,7 +42,7 @@ class TimeCollectingTestResult(unittest.TestResult):
class TestSubunitTestRunner(unittest.TestCase):
def test_includes_timing_output(self):
- io = StringIO()
+ io = BytesIO()
runner = SubunitTestRunner(stream=io)
test = PlaceHolder('name')
runner.run(test)