Added utils test

tests/test_utilities.py

@@ -0,0 +1,21 @@
+import unittest
+from slpkg.utilities import Utilities
+from slpkg.configs import Configs
+
+
+class TestUtilities(unittest.TestCase):
+
+    def setUp(self):
+        self.utils = Utilities()
+        self.build_path = Configs.build_path
+
+    def test_build_tag(self):
+        self.assertEqual(['2'], self.utils.build_tag(self.build_path,
+                                                     'fish'))
+
+    def test_ins_installed(self):
+        self.assertEqual(True, self.utils.is_installed('fish-3.4.0'))
+
+
+if __name__ == '__main__':
+    unittest.main()