test_autopatching.py 文件源码

def test_autopatching_twice_middleware(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[0], 'ddtrace.contrib.django.TraceMiddleware')
        ok_('ddtrace.contrib.django.TraceMiddleware' not in settings.MIDDLEWARE_CLASSES)
        eq_(settings.MIDDLEWARE[-1], 'ddtrace.contrib.django.TraceExceptionMiddleware')
        ok_('ddtrace.contrib.django.TraceExceptionMiddleware' not in settings.MIDDLEWARE_CLASSES)

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

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