feat: add interfaces of OAuth handler methods for authorization (#18889)

api/tests/unit_tests/utils/http_parser/test_oauth_convert_request_to_raw_data.py

@@ -0,0 +1,20 @@
+from werkzeug import Request
+from werkzeug.datastructures import Headers
+from werkzeug.test import EnvironBuilder
+
+from core.plugin.impl.oauth import OAuthHandler
+
+
+def test_oauth_convert_request_to_raw_data():
+    oauth_handler = OAuthHandler()
+    builder = EnvironBuilder(
+        method="GET",
+        path="/test",
+        headers=Headers({"Content-Type": "application/json"}),
+    )
+    request = Request(builder.get_environ())
+    raw_request_bytes = oauth_handler._convert_request_to_raw_data(request)
+
+    assert b"GET /test HTTP/1.1" in raw_request_bytes
+    assert b"Content-Type: application/json" in raw_request_bytes
+    assert b"\r\n\r\n" in raw_request_bytes