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diff --git a/src/third_party/wiredtiger/test/3rdparty/testscenarios-0.4/lib/testscenarios/testcase.py b/src/third_party/wiredtiger/test/3rdparty/testscenarios-0.4/lib/testscenarios/testcase.py
new file mode 100644
index 00000000000..2ab50c78848
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+++ b/src/third_party/wiredtiger/test/3rdparty/testscenarios-0.4/lib/testscenarios/testcase.py
@@ -0,0 +1,70 @@
+#  testscenarios: extensions to python unittest to allow declarative
+#  dependency injection ('scenarios') by tests.
+#
+# Copyright (c) 2009, Robert Collins <robertc@robertcollins.net>
+# 
+# Licensed under either the Apache License, Version 2.0 or the BSD 3-clause
+# license at the users choice. A copy of both licenses are available in the
+# project source as Apache-2.0 and BSD. You may not use this file except in
+# compliance with one of these two licences.
+# 
+# Unless required by applicable law or agreed to in writing, software
+# distributed under these licenses is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
+# license you chose for the specific language governing permissions and
+# limitations under that license.
+
+__all__ = [
+    'TestWithScenarios',
+    'WithScenarios',
+    ]
+
+import unittest
+
+from testtools.testcase import clone_test_with_new_id
+
+from testscenarios.scenarios import generate_scenarios
+
+_doc = """
+    When a test object which inherits from WithScenarios is run, and there is a
+    non-empty scenarios attribute on the object, the test is multiplied by the
+    run method into one test per scenario. For this to work reliably the
+    WithScenarios.run method must not be overriden in a subclass (or overridden
+    compatibly with WithScenarios).
+    """
+
+class WithScenarios(object):
+    __doc__ = """A mixin for TestCase with support for declarative scenarios.
+    """ + _doc
+
+    def _get_scenarios(self):
+        return getattr(self, 'scenarios', None)
+
+    def countTestCases(self):
+        scenarios = self._get_scenarios()
+        if not scenarios:
+            return 1
+        else:
+            return len(scenarios)
+
+    def debug(self):
+        scenarios = self._get_scenarios()
+        if scenarios:
+            for test in generate_scenarios(self):
+                test.debug()
+        else:
+            return super(WithScenarios, self).debug()
+
+    def run(self, result=None):
+        scenarios = self._get_scenarios()
+        if scenarios:
+            for test in generate_scenarios(self):
+                test.run(result)
+            return
+        else:
+            return super(WithScenarios, self).run(result)
+
+
+class TestWithScenarios(WithScenarios, unittest.TestCase):
+    __doc__ = """Unittest TestCase with support for declarative scenarios.
+    """ + _doc