1 files changed, 46 insertions, 0 deletions
diff --git a/contrib/python/zope.interface/py3/zope/interface/common/tests/test_io.py b/contrib/python/zope.interface/py3/zope/interface/common/tests/test_io.py
new file mode 100644
index 0000000000..72684bff06
--- /dev/null
+++ b/contrib/python/zope.interface/py3/zope/interface/common/tests/test_io.py
@@ -0,0 +1,46 @@
+##############################################################################
+# Copyright (c) 2020 Zope Foundation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+##############################################################################
+
+
+import io as abc
+import unittest
+
+# Note that importing z.i.c.io does work on import.
+from zope.interface.common import io
+
+from . import VerifyClassMixin
+from . import VerifyObjectMixin
+from . import add_abc_interface_tests
+
+
+class TestVerifyClass(VerifyClassMixin,
+                      unittest.TestCase):
+    pass
+
+
+add_abc_interface_tests(TestVerifyClass, io.IIOBase.__module__)
+
+
+class TestVerifyObject(VerifyObjectMixin,
+                       TestVerifyClass):
+    CONSTRUCTORS = {
+        abc.BufferedWriter: lambda: abc.BufferedWriter(abc.StringIO()),
+        abc.BufferedReader: lambda: abc.BufferedReader(abc.StringIO()),
+        abc.TextIOWrapper: lambda: abc.TextIOWrapper(abc.BytesIO()),
+        abc.BufferedRandom: lambda: abc.BufferedRandom(abc.BytesIO()),
+        abc.BufferedRWPair: lambda: abc.BufferedRWPair(
+            abc.BytesIO(), abc.BytesIO()
+        ),
+        abc.FileIO: lambda: abc.FileIO(__file__),
+        '_WindowsConsoleIO': unittest.SkipTest,
+        'WinConsoleIO': unittest.SkipTest,  # breaks on PyPy-3.10
+    }