Add basic unit tests for Ubuntu specific platform

Author: PrzemekWirkus

test/os_linux_ubuntu.py

@@ -0,0 +1,37 @@
+#!/usr/bin/env python
+"""
+mbed SDK
+Copyright (c) 2011-2015 ARM Limited
+
+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 unittest
+from mbed_lstools.lstools_ubuntu import MbedLsToolsUbuntu
+
+class UbuntuPortTestCase(unittest.TestCase):
+    """ Basic test cases checking trivial asserts
+    """
+
+    def setUp(self):
+        self.linux_ubuntu = MbedLsToolsUbuntu()
+
+    def tearDown(self):
+        pass
+
+    def test_os_support(self):
+        self.assertIn("Ubuntu", self.linux_ubuntu.os_supported)
+
+
+if __name__ == '__main__':
+    unittest.main()