[gsoc-admin] tests: Add config_test

[Lasse Schuirmann <lschuirma src gnome org>]

commit 7198a02ad3bbf716738a456f224ccca497281073
Author: Lasse Schuirmann <lasse schuirmann gmail com>
Date:   Wed Aug 12 19:01:05 2015 +0200

    tests: Add config_test

 tests/config_test.py |   11 +++++++++++
 1 files changed, 11 insertions(+), 0 deletions(-)
---
diff --git a/tests/config_test.py b/tests/config_test.py
new file mode 100644
index 0000000..72c227a
--- /dev/null
+++ b/tests/config_test.py
@@ -0,0 +1,11 @@
+import datetime
+import unittest
+from maillib.config import apply_substitutions
+
+
+class ModuleTest(unittest.TestCase):
+    def test_apply_substitutions(self):
+        now = datetime.datetime.now()
+        self.assertEqual(apply_substitutions("some/{year}"),
+                         "some/"+str(now.year))
+        self.assertEqual(apply_substitutions("some/year"), "some/year")