diff --git a/stestr/tests/test_results.py b/stestr/tests/test_results.py
new file mode 100644
index 00000000..c905ffb7
--- /dev/null
+++ b/stestr/tests/test_results.py
@@ -0,0 +1,76 @@
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+
+import datetime
+from datetime import datetime as dt
+import sys
+
+from stestr import results
+from stestr.tests import base
+
+
+class TestSummarizingResult(base.TestCase):
+    def setUp(self):
+        super(TestSummarizingResult, self).setUp()
+        self.sr = results.SummarizingResult()
+        self.sr.startTestRun()
+
+    def test_status(self):
+        # just call status with no arguments
+        self.sr.status()
+        self.assertEqual(None, self.sr._last_time)
+        # set status
+        ts = dt.now()
+        self.sr.status(timestamp=ts)
+        self.assertEqual(ts, self.sr._last_time)
+        # update status by past time
+        ts = ts - datetime.timedelta(seconds=3600)
+        self.sr.status(timestamp=ts)
+        self.assertEqual(ts, self.sr._first_time)
+        # update status
+        ts = dt.now()
+        self.sr.status(timestamp=ts)
+        self.assertEqual(ts, self.sr._last_time)
+
+    def test_get_num_failures_zero(self):
+        self.assertEqual(0, self.sr.get_num_failures())
+
+    def test_get_num_failures_three(self):
+        self.sr.failures = [1, 2]
+        self.sr.errors = [3]
+        self.assertEqual(3, self.sr.get_num_failures())
+
+    def test_get_time_taken_none(self):
+        self.assertEqual(None, self.sr.get_time_taken())
+
+    def test_get_time_taken_three(self):
+        now = dt.now()
+        self.sr._first_time = now
+        self.sr._last_time = now + datetime.timedelta(seconds=3)
+        self.assertEqual(3, self.sr.get_time_taken())
+
+
+class TestCatFiles(base.TestCase):
+    def setUp(self):
+        super(TestCatFiles, self).setUp()
+        self.cat_files = results.CatFiles(sys.stdout)
+
+    def test_status_file_name_none(self):
+        self.cat_files.status(file_name=None)
+        self.assertEqual(None, self.cat_files.last_file)
+
+    def test_status_file_name_foo(self):
+        self.cat_files.status(file_name='foo', file_bytes=b'abc')
+        self.assertEqual('foo', self.cat_files.last_file)
+        # Try again with the same file name
+        self.cat_files.status(file_name='foo', file_bytes=b'abc')
+        self.assertEqual('foo', self.cat_files.last_file)