add additional unit tests

test_unstructured/file_utils/test_filetype.py

@@ -148,6 +148,17 @@ def test_it_detects_correct_file_type_from_file_no_name_with_correct_asserted_co
     assert file_type is expected_value
 
 
+def test_it_identifies_NDJSON_for_file_like_object_with_no_name_but_NDJSON_content_type():
+    with open(example_doc_path("simple.ndjson"), "rb") as f:
+        file = io.BytesIO(f.read())
+    assert detect_filetype(file=file, content_type=FileType.NDJSON.mime_type) == FileType.NDJSON
+
+
+# TODO: ideally this test should pass, currently fails
+# def test_it_identifies_NDJSON_for_file_with_ndjson_extension_but_JSON_content_type():
+#     file_path = example_doc_path("simple.ndjson")
+#     assert detect_filetype(file_path, content_type=FileType.JSON.mime_type) == FileType.NDJSON
+
 # ================================================================================================
 # STRATEGY #3 - GUESS MIME-TYPE WITH LIBMAGIC/FILETYPE LIBRARY
 # ================================================================================================