diff --git a/litellm/tests/test_file_types.py b/litellm/tests/test_file_types.py
new file mode 100644
index 0000000000..db83ba0e74
--- /dev/null
+++ b/litellm/tests/test_file_types.py
@@ -0,0 +1,54 @@
+from litellm.types.files import (
+    FILE_EXTENSIONS,
+    FILE_MIME_TYPES,
+    FileType,
+    get_file_extension_from_mime_type,
+    get_file_type_from_extension,
+    get_file_extension_for_file_type,
+    get_file_mime_type_for_file_type,
+    get_file_mime_type_from_extension,
+)
+import pytest
+
+
+class TestFileConsts:
+    def test_all_file_types_have_extensions(self):
+        for file_type in FileType:
+            assert file_type in FILE_EXTENSIONS.keys()
+
+    def test_all_file_types_have_mime_types(self):
+        for file_type in FileType:
+            assert file_type in FILE_MIME_TYPES.keys()
+
+    def test_get_file_extension_from_mime_type(self):
+        assert get_file_extension_from_mime_type("audio/aac") == "aac"
+        assert get_file_extension_from_mime_type("application/pdf") == "pdf"
+        with pytest.raises(ValueError):
+            get_file_extension_from_mime_type("application/unknown")
+
+    def test_get_file_type_from_extension(self):
+        assert get_file_type_from_extension("aac") == FileType.AAC
+        assert get_file_type_from_extension("pdf") == FileType.PDF
+        with pytest.raises(ValueError):
+            get_file_type_from_extension("unknown")
+
+    def test_get_file_extension_for_file_type(self):
+        assert get_file_extension_for_file_type(FileType.AAC) == "aac"
+        assert get_file_extension_for_file_type(FileType.PDF) == "pdf"
+
+    def test_get_file_mime_type_for_file_type(self):
+        assert get_file_mime_type_for_file_type(FileType.AAC) == "audio/aac"
+        assert get_file_mime_type_for_file_type(FileType.PDF) == "application/pdf"
+
+    def test_get_file_mime_type_from_extension(self):
+        assert get_file_mime_type_from_extension("aac") == "audio/aac"
+        assert get_file_mime_type_from_extension("pdf") == "application/pdf"
+
+    def test_uppercase_extensions(self):
+        # Test that uppercase extensions return the correct file type
+        assert get_file_type_from_extension("AAC") == FileType.AAC
+        assert get_file_type_from_extension("PDF") == FileType.PDF
+
+        # Test that uppercase extensions return the correct MIME type
+        assert get_file_mime_type_from_extension("AAC") == "audio/aac"
+        assert get_file_mime_type_from_extension("PDF") == "application/pdf"