diff --git a/backend/pashub_fetcher/tests/test_pashub_client.py b/backend/pashub_fetcher/tests/test_pashub_client.py
index 9b99cf5c..036e50bc 100644
--- a/backend/pashub_fetcher/tests/test_pashub_client.py
+++ b/backend/pashub_fetcher/tests/test_pashub_client.py
@@ -68,6 +68,30 @@ def test_get_core_file_type_returns_medium_term_improvement_plan_via_substring()
     assert result == CoreFiles.MEDIUM_TERM_IMPROVEMENT_PLAN
 
 
+def test_get_core_file_type_returns_photopack_via_prefix() -> None:
+    # Arrange
+    client = make_client()
+    file = make_file(file_name="Photopack_123456_V1.pdf")
+
+    # Act
+    result = client._get_core_file_type(file)
+
+    # Assert
+    assert result == CoreFiles.PHOTOPACK
+
+
+def test_get_core_file_type_returns_none_for_unknown_file() -> None:
+    # Arrange
+    client = make_client()
+    file = make_file(file_name="unknown_document_123.pdf")
+
+    # Act
+    result = client._get_core_file_type(file)
+
+    # Assert
+    assert result is None
+
+
 def test_get_core_file_type_evidence_category_match_is_case_insensitive() -> None:
     # Arrange
     client = make_client()