diff --git a/protcur/test/test_data_files.py b/protcur/test/test_data_files.py
new file mode 100644
index 0000000..94d354b
--- /dev/null
+++ b/protcur/test/test_data_files.py
@@ -0,0 +1,11 @@
+import unittest
+
+
+class TestDataFiles(unittest.TestCase):
+    def test_exists_units(self):
+        from protcur.config import __units_folder__ as units_folder
+        assert units_folder.exists(), units_folder
+
+    def test_exists_test_params(self):
+        from protcur.config import __units_test_params__ as test_params
+        assert test_params.exists(), test_params