Constant Test case has been added.

tests/constanttest.py

@@ -0,0 +1,15 @@
+import unittest
+import pisi.constants
+import pisi.context as ctx
+
+class ConstantTestCase(unittest.TestCase):
+
+    def testConstants(self):
+        constants = ctx.const
+        constDict = {"actions": "actions.py", "setup":"setup","metadata":"metadata.xml"}
+
+        for i in constDict.keys():
+            if hasattr(constants,i):
+                value = getattr(constants,i)
+                self.assertEqual(value, constDict[i])
+