Add test_axl_filename

Author: gaffney2010

axelrod/tests/unit/test_load_data.py

@@ -0,0 +1,15 @@
+import os
+import unittest
+
+from axelrod.load_data_ import axl_filename
+
+
+class TestLoadData(unittest.TestCase):
+    def test_axl_filename(self):
+        actual_fn = axl_filename("axelrod/strategies/titfortat.py")
+
+        # First go from "unit" up to "tests", then up to "axelrod"
+        dirname = os.path.dirname(__file__)
+        expected_fn = os.path.join(dirname, "../../strategies/titfortat.py")
+
+        self.assertTrue(os.path.samefile(actual_fn, expected_fn))