def test_extension_use_the_application_bound_to_the_current_context(app, mail):
mailer = Mailer()
mailer.init_app(app)
with app.test_request_context():
mailer.send(mail)
assert mailer.outbox == [mail,]
def test_extension_raises_error_if_no_application_bound_to_context(app, mail):
mailer = Mailer()
mailer.init_app(app)
with pytest.raises(RuntimeError) as exc:
mailer.send(mail)
assert 'no application bound to current context' in exc.exconly()
