diff --git a/python_apps/media-monitor2/tests/test_metadata_def.py b/python_apps/media-monitor2/tests/test_metadata_def.py
new file mode 100644
index 000000000..e666ef68a
--- /dev/null
+++ b/python_apps/media-monitor2/tests/test_metadata_def.py
@@ -0,0 +1,44 @@
+# -*- coding: utf-8 -*-
+import unittest
+
+import media.metadata.process as md
+
+class TestMetadataDef(unittest.TestCase):
+    def test_simple(self):
+
+        with md.metadata('MDATA_TESTING') as t:
+            t.optional(True)
+            t.depends('ONE','TWO')
+            t.default('unknown')
+            t.translate(lambda kw: kw['ONE'] + kw['TWO'])
+
+        h = { 'ONE' : "testing", 'TWO' : "123" }
+        result = md.global_reader.read('test_path',h)
+        self.assertTrue( 'MDATA_TESTING' in result )
+        self.assertEqual( result['MDATA_TESTING'], 'testing123' )
+        h1 = { 'ONE' : 'big testing', 'two' : 'nothing' }
+        result1 = md.global_reader.read('bs path', h1)
+        self.assertEqual( result1['MDATA_TESTING'], 'unknown' )
+
+    def test_topo(self):
+        with md.metadata('MDATA_TESTING') as t:
+            t.depends('shen','sheni')
+            t.default('megitzda')
+            t.translate(lambda kw: kw['shen'] + kw['sheni'])
+
+        with md.metadata('shen') as t:
+            t.default('vaxo')
+
+        with md.metadata('sheni') as t:
+            t.default('gio')
+
+        with md.metadata('vaxo') as t:
+            t.depends('shevetsi')
+
+        v = md.global_reader.read('bs mang', {})
+        self.assertEqual(v['MDATA_TESTING'], 'vaxogio')
+        self.assertTrue( 'vaxo' not in v )
+
+        md.global_reader.clear()
+
+if __name__ == '__main__': unittest.main()