templating.py 文件源码

def test_custom_template_loader(self):
        class MyFlask(flask.Flask):
            def create_global_jinja_loader(self):
                from jinja2 import DictLoader
                return DictLoader({'index.html': 'Hello Custom World!'})
        app = MyFlask(__name__)
        @app.route('/')
        def index():
            return flask.render_template('index.html')
        c = app.test_client()
        rv = c.get('/')
        self.assert_equal(rv.data, b'Hello Custom World!')