diff --git a/backend/condition/tests/parsing/test_parsing_factory.py b/backend/condition/tests/parsing/test_parsing_factory.py
index dc2949f0..4e373a12 100644
--- a/backend/condition/tests/parsing/test_parsing_factory.py
+++ b/backend/condition/tests/parsing/test_parsing_factory.py
@@ -1,3 +1,5 @@
+import pytest
+
 from backend.condition.parsing.factory import select_parser
 
 def test_selects_lbwf_parser():
@@ -9,4 +11,12 @@ def test_selects_lbwf_parser():
     actual_class_name = select_parser(file_path_str).__class__.__name__
 
     # assert
-    assert expected_class_name == actual_class_name
\ No newline at end of file
+    assert expected_class_name == actual_class_name
+
+def test_unknown_filepath_raises_value_error():
+    # arrange
+    file_path_str = "unkown/Example Asset Data.xlsx"
+
+    # act + assert
+    with pytest.raises(ValueError):
+        select_parser(file_path_str)
\ No newline at end of file