test_settings.py

import os
import platform

if platform.system() in ["Darwin"]:
    from multiprocessing import set_start_method
    # required since Python-3.8. See #319
    set_start_method("fork")

BASE_DIR = os.path.dirname(os.path.abspath(__file__))

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
    },
}

# Default values: True
# POST_OFFICE_CACHE = True
# POST_OFFICE_TEMPLATE_CACHE = True


CACHES = {
    'default': {
        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
        'TIMEOUT': 36000,
        'KEY_PREFIX': 'post-office',
    },
    'post_office': {
        'BACKEND': 'django.core.cache.backends.locmem.LocMemCache',
        'TIMEOUT': 36000,
        'KEY_PREFIX': 'post-office',
    }
}

POST_OFFICE = {
    'BACKENDS': {
        'default': 'django.core.mail.backends.dummy.EmailBackend',
        'locmem': 'django.core.mail.backends.locmem.EmailBackend',
        'error': 'post_office.tests.test_backends.ErrorRaisingBackend',
        'smtp': 'django.core.mail.backends.smtp.EmailBackend',
        'connection_tester': 'post_office.tests.test_mail.ConnectionTestingBackend',
    },
    'CELERY_ENABLED': False,
    'MAX_RETRIES': 2,
    'MESSAGE_ID_ENABLED': True,
    'MESSAGE_ID_FQDN': 'example.com',
}


INSTALLED_APPS = (
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.messages',
    'django.contrib.sessions',
    'post_office',
)

SECRET_KEY = 'a'

ROOT_URLCONF = 'post_office.test_urls'

DEFAULT_FROM_EMAIL = 'webmaster@example.com'

MIDDLEWARE = [
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
]

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.contrib.auth.context_processors.auth',
                'django.template.context_processors.debug',
                'django.template.context_processors.i18n',
                'django.template.context_processors.media',
                'django.template.context_processors.request',
                'django.template.context_processors.static',
                'django.template.context_processors.tz',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    }, {
        'BACKEND': 'post_office.template.backends.post_office.PostOfficeTemplates',
        'APP_DIRS': True,
        'DIRS': [os.path.join(BASE_DIR, 'tests/templates')],
        'OPTIONS': {
            'context_processors': [
                'django.contrib.auth.context_processors.auth',
                'django.template.context_processors.debug',
                'django.template.context_processors.i18n',
                'django.template.context_processors.media',
                'django.template.context_processors.static',
                'django.template.context_processors.tz',
                'django.template.context_processors.request',
            ]
        }
    }
]

STATICFILES_DIRS = [os.path.join(BASE_DIR, 'tests/static')]

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'