代码结构

exceptionhandler/
    manage.py
    apis/                               -- add dispatch here
        sample_apis.py
    applications/                       -- add user case here, it will handle multi aggregate root cooperation
        sample_user_case.py    
    domains/
        rootcases/                      -- aggregate
            sample.py                   -- aggregate root
            algorithm.py                -- entity
            sample_domain_service.py    -- domain service
    infrastructures/                    -- infrastructure
        samples/
            edoc.py                     -- add upload/download specific implimentation
            sample_modules.py           -- add db CRUD specific implimentation
    exceptionhandler/                   -- main root
        __init__.py
        settings.py
        urls.py
        asgi.py
        wsgi.py

测试策略

• 使用独立的测试setting文件

# 初始化数据库
python3 manage.py migrate --settings=exceptionhandler.test_settings
# 跑测试
python3 manage.py test --settings=exceptionhandler.test_settings

• 使用sqlite替代掉原有数据库

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join(BASE_DIR, 'db-test.sqlite3'),
    }
}

    def setUp(self) -> None:
        SampleData.objects.create(id_name="id", mark_result=False).save()

    def tearDown(self) -> None:
        SampleData.objects.all().delete()

• 使用mock替换掉数据

    @patch('domain.rootcause.algorithm.analysis')
    def test_mock_analysis(self, mock_analysis):
        mock_analysis.return_value = True
        request = HttpRequest()
        request._body = '{"id": "id2"}'
        value = create_sample(request)
        self.assertEqual(value.getvalue(), b'{"id": "id2", "mark_result": false}')

• 使用stub server

    def setUp(self) -> None:
        self.server = StubServer(8000)
        self.server.run()

    def tearDown(self) -> None:
        self.server.stop()

    @patch('domain.rootcause.algorithm.analysis')
    def test_mock_analysis(self, mock_analysis):
        self.server.expect(method="GET", url="/").and_return(content="id2")
       ...