get_content_type

tests/sources/xml/test_marc.py

@@ -961,6 +961,18 @@ def test_get_call_numbers_transforms_correctly_if_fields_missing():
     assert Marc.get_call_numbers(source_record) is None
 
 
+def test_get_content_type_success():
+    source_record = create_marc_source_record_stub()
+    assert Marc.get_content_type(source_record) == ["Language material"]
+
+
+def test_get_content_type_transforms_correctly_if_code_blank():
+    source_record = create_marc_source_record_stub(
+        leader_field_insert="<leader>03282n m  2200721Ki 4500</leader>"
+    )
+    assert Marc.get_content_type(source_record) is None
+
+
 def test_marc_record_missing_leader_skips_record(caplog):
     marc_xml_records = Marc.parse_source_file(
         "tests/fixtures/marc/marc_record_missing_leader.xml"

transmogrifier/sources/xml/marc.py

@@ -51,13 +51,7 @@ def get_optional_fields(self, source_record: Tag) -> dict | None:
         # citation not used in MARC
 
         # content_type
-        if content_type := Marc.json_crosswalk_code_to_name(
-            self._get_leader_field(source_record)[6:7],
-            self.marc_content_type_crosswalk,
-            source_record_id,
-            "Leader/06",
-        ):
-            fields["content_type"] = [content_type]
+        fields["content_type"] = self.get_content_type(source_record)
 
         # contents
         for datafield in source_record.find_all("datafield", tag="505"):
@@ -827,6 +821,17 @@ def get_call_numbers(cls, source_record: Tag) -> list[str] | None:
                 )
         return call_numbers or None
 
+    @classmethod
+    def get_content_type(cls, source_record: Tag) -> list[str] | None:
+        if content_type := cls.json_crosswalk_code_to_name(
+            cls._get_leader_field(source_record)[6:7],
+            cls.marc_content_type_crosswalk,
+            cls.get_source_record_id(source_record),
+            "Leader/06",
+        ):
+            return [content_type]
+        return None
+
     @staticmethod
     def get_main_titles(xml: Tag) -> list[str]:
         """