[WIP] add simple server for callback testing

tests/server.py

@@ -0,0 +1,34 @@
+from http.server import HTTPServer, BaseHTTPRequestHandler
+
+
+__all__ = ["run"]
+
+
+class Handler(BaseHTTPRequestHandler):
+    def do_POST(self):
+        self.log_message("\"POST %s %s\"", self.path, self.protocol_version)
+
+        print(str(self.headers).strip())
+        content_length = int(self.headers.get("Content-Length", 0))
+        body = self.rfile.read(content_length).decode()
+
+        if body:
+            print(body)
+
+        self.send_response(204)
+        self.end_headers()
+
+class Server(HTTPServer):
+    def __init__(self, host: str = "", port: int = 8000):
+        super().__init__((host, port), Handler)
+
+
+if __name__ == "__main__":
+    with Server() as server:
+        host, port = server.server_address
+        print(f"Server listening on {host}:{port}")
+
+        try:
+            server.serve_forever()
+        except KeyboardInterrupt:
+            print("Server stopped")