diff --git a/backend/open_webui/test/apps/webui/storage/test_provider.py b/backend/open_webui/test/apps/webui/storage/test_provider.py
index 8df07a9fb..8d1090541 100644
--- a/backend/open_webui/test/apps/webui/storage/test_provider.py
+++ b/backend/open_webui/test/apps/webui/storage/test_provider.py
@@ -1,7 +1,17 @@
+import io
+
 import pytest
 from open_webui.storage import provider
 
 
+def mock_upload_dir(monkeypatch, tmp_path):
+    """Fixture to monkey-patch the UPLOAD_DIR and create a temporary directory."""
+    directory = tmp_path / "uploads"
+    directory.mkdir()
+    monkeypatch.setattr(provider, "UPLOAD_DIR", str(directory))
+    return directory
+
+
 def test_imports():
     provider.StorageProvider
     provider.LocalStorageProvider
@@ -17,36 +27,83 @@ def test_get_storage_provider():
     with pytest.raises(RuntimeError):
         provider.get_storage_provider("invalid")
 
+
 def test_class_instantiation():
     with pytest.raises(TypeError):
         provider.StorageProvider()
     with pytest.raises(TypeError):
+
         class Test(provider.StorageProvider):
             pass
+
         Test()
     provider.LocalStorageProvider()
     provider.S3StorageProvider()
 
 
 class TestLocalStorageProvider(provider.LocalStorageProvider):
-    def test_upload_file(self):
-        pass
+    file_content = b"test content"
+    file_bytesio = io.BytesIO(file_content)
+    filename = "test.txt"
+    filename_extra = "test_exyta.txt"
+    file_bytesio_empty = io.BytesIO()
+
+    def test_upload_file(self, monkeypatch, tmp_path):
+        upload_dir = mock_upload_dir(monkeypatch, tmp_path)
+        contents, file_path = self.upload_file(self.file_bytesio, self.filename)
+        assert (upload_dir / self.filename).exists()
+        assert (upload_dir / self.filename).read_bytes() == self.file_content
+        assert contents == self.file_content
+        assert file_path == str(upload_dir / self.filename)
+        with pytest.raises(ValueError):
+            self.upload_file(self.file_bytesio_empty, self.filename)
+
+    def test_get_file(self, monkeypatch, tmp_path):
+        upload_dir = mock_upload_dir(monkeypatch, tmp_path)
+        file_path = str(upload_dir / self.filename)
+        file_path_return = self.get_file(file_path)
+        assert file_path == file_path_return
+
+    def test_delete_file(self, monkeypatch, tmp_path):
+        upload_dir = mock_upload_dir(monkeypatch, tmp_path)
+        (upload_dir / self.filename).write_bytes(self.file_content)
+        assert (upload_dir / self.filename).exists()
+        file_path = str(upload_dir / self.filename)
+        self.delete_file(file_path)
+        assert not (upload_dir / self.filename).exists()
+
+    def test_delete_all_files(self, monkeypatch, tmp_path):
+        upload_dir = mock_upload_dir(monkeypatch, tmp_path)
+        (upload_dir / self.filename).write_bytes(self.file_content)
+        (upload_dir / self.filename_extra).write_bytes(self.file_content)
+        self.delete_all_files()
+        assert not (upload_dir / self.filename).exists()
+        assert not (upload_dir / self.filename_extra).exists()
+
+
+class TestS3StorageProvider(provider.S3StorageProvider):
+    file_content = b"test content"
+    file_bytesio = io.BytesIO(file_content)
+    filename = "test.txt"
+    filename_extra = "test_extra.txt"
+    file_bytesio_empty = io.BytesIO()
+    bucket_name = "my-bucket"
+
+    def test_upload_file(self, monkeypatch, tmp_path):
+        upload_dir = mock_upload_dir(monkeypatch, tmp_path)
+        contents, file_path = self.upload_file(self.file_bytesio, self.filename)
+        assert (upload_dir / self.filename).exists()
+        assert (upload_dir / self.filename).read_bytes() == self.file_content
+        assert contents == self.file_content
+        assert file_path == str(upload_dir / self.filename)
+        with pytest.raises(ValueError):
+            self.upload_file(self.file_bytesio_empty, self.filename)
+
     def test_get_file(self):
         pass
+
     def test_delete_file(self):
         pass
+
     def test_delete_all_files(self):
         pass
-
-
-class TestLocalStorageProvider(provider.S3StorageProvider):
-    def test_upload_file(self):
-        pass
-    def test_get_file(self):
-        pass
-    def test_delete_file(self):
-        pass
-    def test_delete_all_files(self):
-        pass
-
-)