def METHOD_NAME(self, configuration_helpers_mock):
    """Test the get mfe config with a query param from site configuration.
    Expected result:
    - The get_value method of the configuration_helpers in the views is called twice, once with the
    parameters ("MFE_CONFIG", settings.MFE_CONFIG)
    and once with the parameters ("MFE_CONFIG_OVERRIDES", settings.MFE_CONFIG_OVERRIDES).
    - The json of the response is the merge of both mocked configurations.
    """
    configuration_helpers_mock.get_value.side_effect = [
        {"EXAMPLE_VAR": "value", "OTHER": "other"},
        {"mymfe": {"EXAMPLE_VAR": "mymfe_value"}},
    ]
    response = self.client.get(f"{self.mfe_config_api_url}?mfe=mymfe")
    self.assertEqual(response.status_code, status.HTTP_200_OK)
    calls = [call("MFE_CONFIG", settings.MFE_CONFIG),
             call("MFE_CONFIG_OVERRIDES", settings.MFE_CONFIG_OVERRIDES)]
    configuration_helpers_mock.get_value.assert_has_calls(calls)
    self.assertEqual(response.json(), {"EXAMPLE_VAR": "mymfe_value", "OTHER": "other"})