测试 Django 信号的正确方法

我正在尝试测试发送的信号，它正在提供_args。内部触发信号contact_question_create提交表单后立即查看。

我的测试用例是这样的：

    def test_form_should_post_proper_data_via_signal(self):
        form_data = {'name': 'Jan Nowak'}
        signals.question_posted.send(sender='test', form_data=form_data)
        @receiver(signals.question_posted, sender='test')
        def question_posted_listener(sender, form_data):
            self.name = form_data['name']
        eq_(self.name, 'Jan Nowak')

这是测试该信号的正确方法吗？还有更好的想法吗？

完成您在 2015 年提出的要求的最简单方法：

from unittest.mock import patch

@patch('full.path.to.signals.question_posted.send')
def test_question_posted_signal_triggered(self, mock):
    form = YourForm()
    form.cleaned_data = {'name': 'Jan Nowak'}
    form.save()

    # Check that your signal was called.
    self.assertTrue(mock.called)

    # Check that your signal was called only once.
    self.assertEqual(mock.call_count, 1)

    # Do whatever else, like actually checking if your signal logic did well.

这样，您刚刚测试了信号是否已正确触发。