Method add_app_template_test

src/flask/sansio/blueprints.py:497–513

Register a template test, available in any template rendered by the application. Works like the :meth:`app_template_test` decorator. Equivalent to :meth:`.Flask.add_template_test`. .. versionadded:: 0.10 :param name: the optional name of the test, otherwise the

(
        self, f: ft.TemplateTestCallable, name: str | None = None
    )

    @setupmethod
    def add_app_template_test(
        self, f: ft.TemplateTestCallable, name: str | None = None
    ) -> None:
        """Register a template test, available in any template rendered by the
        application. Works like the :meth:`app_template_test` decorator. Equivalent to
        :meth:`.Flask.add_template_test`.

        .. versionadded:: 0.10

        :param name: the optional name of the test, otherwise the
                     function name will be used.
        """

        def register_template(state: BlueprintSetupState) -> None:
            state.app.jinja_env.tests[name or f.__name__] = f

        self.record_once(register_template)

    @setupmethod
    def app_template_global(