remove tests/__init__.py

setup.cfg

@@ -1,5 +1,2 @@
 [wheel]
 universal = 1
-
-[tool:pytest]
-DJANGO_SETTINGS_MODULE = tests.testproject.settings

tests/conftest.py

@@ -0,0 +1,7 @@
+from django.conf import settings
+
+from testproject import settings as testproject_settings
+
+
+def pytest_configure():
+    settings.configure(**vars(testproject_settings))

tests/test_command.py

@@ -4,7 +4,7 @@ import pkg_resources
 from django.core.management import call_command
 
 TEST_LOCALE_DIR = pkg_resources.resource_filename(
-    'tests.testproject', 'locale'
+    'testproject', 'locale'
 )
 
 

tests/testproject/settings.py

@@ -2,10 +2,10 @@ import pkg_resources
 
 SECRET_KEY = 'x'
 USE_I18N = True
-ROOT_URLCONF = 'tests.testproject.urls'
+ROOT_URLCONF = 'testproject.urls'
 INSTALLED_APPS = [
     'django_babel',
-    'tests.testproject',
+    'testproject',
 ]
 MIDDLEWARE_CLASSES = [
     'django.middleware.locale.LocaleMiddleware',