Yandex membuka Testsuite

• HTTP API.
• HTTP-, .
• , .
• , .

• meningkatkan dan mengisi basis data;
• mencegat dan memalsukan permintaan HTTP;
• menjalankan layanan pengujian di lingkungan ini.

Prinsip operasi

• bahwa setelah memulai layanan merespons melalui HTTP;
• bagaimana layanan berperilaku jika layanan eksternal sementara tidak tersedia.

• Mulai basis data (PostgreSQL, MongoDB ...).
• Sebelum setiap tes, ini mengisi database dengan data uji.
• Mulai layanan mikro yang diuji dalam proses terpisah.
• Meluncurkan server webnya sendiri (mockserver), yang meniru (mengering) lingkungan eksternal untuk layanan.
• Melakukan tes.

• Apakah layanan menangani permintaan HTTP dengan benar.
• Bagaimana layanan ini bekerja secara langsung dalam database.
• Ada / tidaknya / urutan panggilan ke layanan eksternal.
• Keadaan internal layanan menggunakan informasi yang diteruskan ke Testpoint.

mockserver

Basis data

Cara mulai menggunakan

obrolan backend

Layanan

@routes.post('/messages/retrieve')
async def handle_list(request):
async with aiohttp.ClientSession() as session:
    #     
    response = await session.post(
        storage_service_url + 'messages/retrieve',
            timeout=HTTP_TIMEOUT,
        )
        response.raise_for_status()
        response_body = await response.json()

        #    ,      
        messages = list(reversed(response_body['messages']))
        result = {'messages': messages}
        return web.json_response(result)

Tes

#      . 
#       ( scope='session'),   
@pytest.fixture(scope='session')
async def service_daemon(
        register_daemon_scope, service_spawner, mockserver_info,
):
    python_path = os.getenv('PYTHON3', 'python3')
    service_path = pathlib.Path(__file__).parent.parent
    async with register_daemon_scope(
            name='chat-backend',
            spawn=service_spawner(
                #   .    —  ,
                #    
                [
                    python_path,
                    str(service_path.joinpath('server.py')),
                    '--storage-service-url',
                    #       mockserver,
                    #         mockserver   /storage
                    mockserver_info.base_url + 'storage/',
                ],
                #  URL,      
                check_url=SERVICE_BASEURL + 'ping',
            ),
    ) as scope:
        yield scope

@pytest.fixture
async def server_client(
        service_daemon, # HTTP-  == 204
        service_client_options,
        ensure_daemon_started,
        #   mockserver ,      ,
        #    ,    
        mockserver,
):
    await ensure_daemon_started(service_daemon)
    yield service_client.Client(SERVICE_BASEURL, **service_client_options)

• permintaan diproses secara normal;
• saat memproses permintaan, chat-backendpanggil metode penyimpanan POST messages/send.

async def test_messages_send(server_client, mockserver):
    #    mockserver   POST messages/send
    @mockserver.handler('/storage/messages/send')    
    async def handle_send(request):
        # ,       ,
        #     chat-backend
        assert request.json == {
            'username': 'Bob',
            'text': 'Hello, my name is Bob!',
        }
        return mockserver.make_response(status=204)

    #    chat-backend
    response = await server_client.post(
        'messages/send',
        json={'username': 'Bob', 'text': 'Hello, my name is Bob!'},
    )
    
    # ,        HTTP-
    assert response.status == 204

    # ,  chat-backend       POST messages/send
    assert handle_send.times_called == 1

• permintaan diproses secara normal;
• saat memproses permintaan, chat-backendpanggil metode penyimpanan POST /messages/retrieve;
• chat-backend “Membalik” daftar pesan yang diterima dari repositori sehingga pesan-pesan terbaru ada di akhir daftar.

async def test_messages_retrieve(server_client, mockserver):
    messages = [
        {
            'username': 'Bob',
            'created': '2020-01-01T12:01:00.000',
            'text': 'Hi, my name is Bob!',
        },
        {
            'username': 'Alice',
            'created': {'$date': '2020-01-01T12:02:00.000'},
            'text': 'Hi Bob!',
        },
    ]

    #    mockserver   POST messages/retrieve
    @mockserver.json_handler('/storage/messages/retrieve')
    async def handle_retrieve(request):
        return {'messages': messages}

    #    chat-backend
    response = await server_client.post('messages/retrieve')

    # ,        HTTP-
    assert response.status == 200

    body = response.json()
    
    # ,    chat-backend    ,
    #   ,       
    assert body == {'messages': list(reversed(messages))}

    # ,  chat-backend       POST messages/retrieve
    assert handle_retrieve.times_called == 1

chat-storage-postgres

Layanan

@routes.post('/messages/retrieve')
    async def get(request):
        async with app['pool'].acquire() as connection:
            records = await connection.fetch(
                'SELECT created, username, "text" FROM messages '
                'ORDER BY created DESC LIMIT 20',
            )
        messages = [
            {
                'created': record[0].isoformat(),
                'username': record[1],
                'text': record[2],
            }
            for record in records
        ]
        return web.json_response({'messages': messages})

Tes

@pytest.fixture(scope='session')
def pgsql_local(pgsql_local_create):
    # ,     
    tests_dir = pathlib.Path(__file__).parent
    sqldata_path = tests_dir.joinpath('../schemas/postgresql')
    databases = discover.find_databases('chat_storage_postgres', sqldata_path)
    return pgsql_local_create(list(databases.values()))

async def test_messages_send(server_client, pgsql):
    #   POST /messages/send
    response = await server_client.post(
        '/messages/send', json={'username': 'foo', 'text': 'bar'},
    )

    # ,    
    assert response.status_code == 200

    # ,     JSON    
    data = response.json()
    assert 'id' in data

    #     PostgreSQL  
    cursor = pgsql['chat_messages'].cursor()
    cursor.execute(
        'SELECT username, text FROM messages WHERE id = %s', (data['id'],),
    )
    record = cursor.fetchone()

    # ,          , 
    #     HTTP-
    assert record == ('foo', 'bar')

--  chat-storage-postgres/tests/static/test_service/pg_chat_messages.sql
INSERT INTO messages(id, created, username, text) VALUES (DEFAULT, '2020-01-01 00:00:00.0+03', 'foo', 'hello, world!');
INSERT INTO messages(id, created, username, text) VALUES (DEFAULT, '2020-01-01 00:00:01.0+03', 'bar', 'happy ny');

#  chat-storage-postgres/tests/test_service.py
async def test_messages_retrieve(server_client, pgsql):
    #     testsuite     
    #  pg_chat_messages.sql
    response = await server_client.post('/messages/retrieve', json={})
    assert response.json() == {
        'messages': [
            {
                'created': '2019-12-31T21:00:01+00:00',
                'text': 'happy ny',
                'username': 'bar',
            },
            {
                'created': '2019-12-31T21:00:00+00:00',
                'text': 'hello, world!',
                'username': 'foo',
            },
        ],
    }

Meluncurkan

#   MongoDB
docs/examples$ make run-chat-mongo

#   PostgreSQL
docs/examples$ make run-chat-postgres

chat-postgres_1 | ======== Running on http://0.0.0.0:8081 ========
chat-postgres_1 | (Press CTRL+C to quit)

#    
docs/examples$ make docker-runtests

#    
docs/examples$ make docker-runtests-mockserver-example
docs/examples$ make docker-runtests-mongo-example
docs/examples$ make docker-runtests-postgres-example

Dokumentasi