class_docstr: Test Query params commands APIs.
docstr: Test valid st.set_query_params sends protobuf message.
docstr_tok: ["Test","valid","st.set_query_params","sends","protobuf","message","."]
code: def test_set_query_params_sends_protobuf_message(self):
      """Test valid st.set_query_params sends protobuf message."""
      st.experimental_set_query_params(x="a")
      message = self.get_message_from_queue(0)
      self.assertEqual(message.page_info_changed.query_string, "x=a")
  
file_path: streamlit/lib/tests/streamlit/commands/experimental_query_params_test.py
imports: import streamlit
  from streamlit.errors import StreamlitAPIException
  from tests.delta_generator_test_case import DeltaGeneratorTestCase
label_desc: Use image node_id 1 for calling the QueryParamsAPITest obj's underlying member method code with example usage: obj.test_set_query_params_sends_protobuf_message() without return types