test_autopatching.py 文件源码

def test_autopatching_twice_middleware_classes(self):
        ok_(django._datadog_patch)
        # Call django.setup() twice and ensure we don't add a duplicate tracer
        django.setup()

        found_app = settings.INSTALLED_APPS.count('ddtrace.contrib.django')
        eq_(found_app, 1)

        eq_(settings.MIDDLEWARE_CLASSES[0], 'ddtrace.contrib.django.TraceMiddleware')
        eq_(settings.MIDDLEWARE_CLASSES[-1], 'ddtrace.contrib.django.TraceExceptionMiddleware')

        found_mw = settings.MIDDLEWARE_CLASSES.count('ddtrace.contrib.django.TraceMiddleware')
        eq_(found_mw, 1)
        found_mw = settings.MIDDLEWARE_CLASSES.count('ddtrace.contrib.django.TraceExceptionMiddleware')
        eq_(found_mw, 1)