diff --git a/os_faults/tests/unit/cmd/__init__.py b/os_faults/tests/unit/cmd/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/os_faults/tests/unit/cmd/test_cmd.py b/os_faults/tests/unit/cmd/test_cmd.py
new file mode 100644
index 0000000..7c9a1bc
--- /dev/null
+++ b/os_faults/tests/unit/cmd/test_cmd.py
@@ -0,0 +1,55 @@
+# 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 mock
+
+from os_faults.cmd import cmd
+from os_faults.tests.unit import test
+
+
+class CmdTestCase(test.TestCase):
+
+    def test_main_no_args(self):
+        self.assertRaises(SystemExit, cmd.main)
+
+    @mock.patch('os_faults.human_api')
+    @mock.patch('os_faults.connect')
+    def test_main_verify(self, mock_connect, mock_human_api):
+        with mock.patch('sys.argv', ['', '-c', 'my_file', '-v']):
+            cmd.main()
+
+            mock_connect.assert_called_once_with(config_filename='my_file')
+            mock_connect.return_value.verify.assert_called_once_with()
+            mock_human_api.assert_not_called()
+
+    @mock.patch('os_faults.human_api')
+    @mock.patch('os_faults.connect')
+    def test_main_command(self, mock_connect, mock_human_api):
+        with mock.patch('sys.argv', ['', '-c', 'my_file', 'my_command']):
+            cmd.main()
+
+            mock_connect.assert_called_once_with(config_filename='my_file')
+            mock_connect.return_value.verify.assert_not_called()
+            mock_human_api.assert_called_once_with(
+                mock_connect.return_value, 'my_command')
+
+    @mock.patch('os_faults.human_api')
+    @mock.patch('os_faults.connect')
+    def test_main_verify_and_command(self, mock_connect, mock_human_api):
+        with mock.patch('sys.argv', ['', '-c', 'my_file', '-v', 'my_command']):
+            cmd.main()
+
+            mock_connect.assert_called_once_with(config_filename='my_file')
+            mock_connect.return_value.verify.assert_called_once_with()
+            mock_human_api.assert_called_once_with(
+                mock_connect.return_value, 'my_command')