def setUp(self):
        self.app = flask.Flask(__name__)
        try:
            self.app.config.from_object(self.configStr)
        except Exception:
            self.fail("Cannot create app from {0}".format(self.configStr))
        if os.environ.get(self.configEnv) is not None:
            self.app.config.from_envvar(self.configEnv)
        if self.configFile is not None:
            self.assertTrue(os.path.exists(self.configFile),
                            "config file does not exist")
            self.app.config.from_pyfile(self.configFile)
Return True if the url will use HTTP proxy.
dataset/ETHPy150Open ga4gh/server/ga4gh/configtest.py/TestConfig.setUp--crossover with--dataset/ETHPy150Open openstack/swift-bench/swiftbench/utils.py/using_http_proxy