def test_handle_cors_preflight_request_headers(self):
    self.check_cors([('origin', 'http://example.com'),
                     ('Access-control-request-method', 'GET'),
                     ('Access-Control-Request-Headers', 'Date,Expires')], True,
                    'http://example.com', 'Date,Expires')
Test a CORS preflight request.
dataset/ETHPy150Open GoogleCloudPlatform/python-compat-runtime/appengine-compat/exported_appengine_sdk/google/appengine/tools/devappserver2/endpoints/endpoints_server_test.py/DevAppserverEndpointsServerTest.test_handle_cors_preflight_request_headers