config.py 文件源码

def test_config_from_envvar(self):
        env = os.environ
        try:
            os.environ = {}
            app = flask.Flask(__name__)
            try:
                app.config.from_envvar('FOO_SETTINGS')
            except RuntimeError as e:
                self.assert_true("'FOO_SETTINGS' is not set" in str(e))
            else:
                self.assert_true(0, 'expected exception')
            self.assert_false(app.config.from_envvar('FOO_SETTINGS', silent=True))

            os.environ = {'FOO_SETTINGS': __file__.rsplit('.', 1)[0] + '.py'}
            self.assert_true(app.config.from_envvar('FOO_SETTINGS'))
            self.common_object_test(app)
        finally:
            os.environ = env