adding states/apt unit test case

tests/unit/states/apt_test.py

@@ -0,0 +1,52 @@
+# -*- coding: utf-8 -*-
+'''
+    :codeauthor: :email:`Jayesh Kariya <jayeshk@saltstack.com>`
+'''
+# Import Python libs
+from __future__ import absolute_import
+
+# Import Salt Testing Libs
+from salttesting import skipIf, TestCase
+from salttesting.mock import (
+    NO_MOCK,
+    NO_MOCK_REASON,
+    MagicMock,
+    patch)
+
+from salttesting.helpers import ensure_in_syspath
+
+ensure_in_syspath('../../')
+
+# Import Salt Libs
+from salt.states import apt
+
+apt.__opts__ = {}
+apt.__salt__ = {}
+
+
+@skipIf(NO_MOCK, NO_MOCK_REASON)
+class AptTestCase(TestCase):
+    '''
+    Test cases for salt.states.apt
+    '''
+    # 'held' function tests: 1
+
+    def test_held(self):
+        '''
+        Test to set package in 'hold' state, meaning it will not be upgraded.
+        '''
+        name = 'tmux'
+
+        ret = {'name': name,
+               'result': False,
+               'changes': {},
+               'comment': 'Package {0} does not have a state'.format(name)}
+
+        mock = MagicMock(return_value=False)
+        with patch.dict(apt.__salt__, {'pkg.get_selections': mock}):
+            self.assertDictEqual(apt.held(name), ret)
+
+
+if __name__ == '__main__':
+    from integration import run_tests
+    run_tests(AptTestCase, needs_daemon=False)