Implemented unit test cases devmap module

tests/unit/modules/devmap_test.py

@@ -0,0 +1,58 @@
+# -*- coding: utf-8 -*-
+'''
+    :codeauthor: :email:`Rupesh Tare <rupesht@saltstack.com>`
+'''
+
+# Import Salt Testing Libs
+from salttesting import TestCase, skipIf
+from salttesting.mock import (
+    MagicMock,
+    patch,
+    NO_MOCK,
+    NO_MOCK_REASON
+)
+
+# Import Salt Libs
+from salt.modules import devmap
+import os.path
+
+
+# Globals
+devmap.__grains__ = {}
+devmap.__salt__ = {}
+devmap.__context__ = {}
+devmap.__opts__ = {}
+
+
+@skipIf(NO_MOCK, NO_MOCK_REASON)
+class DevMapTestCase(TestCase):
+    '''
+    Test cases for salt.modules.devmap
+    '''
+    def test_multipath_list(self):
+        '''
+        Test for Device-Mapper Multipath list
+        '''
+        mock = MagicMock(return_value='A')
+        with patch.dict(devmap.__salt__, {'cmd.run': mock}):
+            self.assertEqual(devmap.multipath_list(), ['A'])
+
+    def test_multipath_flush(self):
+        '''
+        Test for Device-Mapper Multipath flush
+        '''
+        mock = MagicMock(return_value=False)
+        with patch.object(os.path, 'exists', mock):
+            self.assertEqual(devmap.multipath_flush('device'),
+                             'device does not exist')
+
+        mock = MagicMock(return_value=True)
+        with patch.object(os.path, 'exists', mock):
+            mock = MagicMock(return_value='A')
+            with patch.dict(devmap.__salt__, {'cmd.run': mock}):
+                self.assertEqual(devmap.multipath_flush('device'), ['A'])
+
+
+if __name__ == '__main__':
+    from integration import run_tests
+    run_tests(DevMapTestCase, needs_daemon=False)