Microservice wars: JUnit episode V — TestContainers strikes back

In this talk, we'll explore how infrastructure of back-end integration testing evolves when we switch from monolith to microservices. We'll pay special attention to problems that only appear in testing of microservice applications.

We'll see how JUnit5 can help us make our tests more concise.

We'll test working with databases and message brokers using Docker and test-containers library. If you think that testing asynchronous communication (for example, with RabbitMQ) is hard, then come and see for yourself that it really isn't.

We'll also discuss pitfalls of integration testing in Spring Framework and how to avoid them.

Transcript

1. JUnit – Episode 5
   TestContainers strikes back
   

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2. Коровин Анатолий
   antkorwin
   antkorwin
   antkorwin.com
   t.me/test_tools
   

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3. View Slide

4. Monolith
   PostgreSQL
   External
   Camunda BPM
   https://t.me/test_tools
   

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5. План
   .
   - что мы хотим тестировать
   - как тестировали монолит
   - тесты в микросервисах
   - проблемы сопровождения
   - как использовать docker
   - что может пойти не так
   
   

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6. План
   .
   - что мы хотим тестировать
   - как тестировали монолит
   - тесты в микросервисах
   - проблемы сопровождения
   - как использовать docker
   - что может пойти не так
   

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7. Юнит-тесты Компонент-тесты Микросервис-тесты E2E-тесты
   @DataJpaTest
   @WebMvcTest
   @SpringBootTest
   // что мы хотим тестировать
   Интеграционные-тесты
   

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8. Не видно взгляду,
   что ты тестировать
   именно хочешь
   

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9. хранимые процедуры
   нативные запросы
   расширения postgres
   // что мы хотим тестировать
   валидация дата-сетов
   асинхронные события
   конвертацию данных
   

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10. План
    .
    - что мы хотим тестировать
    - как тестировали монолит
    - тесты в микросервисах
    - проблемы сопровождения
    - как использовать docker
    - что может пойти не так
    

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11. Monolith
    PostgreSQL
    External
    Camunda
    BPM
    // как мы тестировали монолит
    

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12. External
    Camunda
    BPM
    Monolith
    PostgreSQL
    // тестируем работу с БД
    

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13. Task
    C
    UUID id;
    String name;
    int estimate;
    // тестируем работу с БД
    

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14. Task
    C
    UUID id;
    String name;
    int estimate;
    TaskRepository
    I
    @Query(“select..”)
    ListfindAll(..)
    // тестируем работу с БД
    

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15. Task
    C
    UUID id;
    String name;
    int estimate;
    TaskRepository
    I
    @Query(“select..”)
    ListfindAll(..)
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    // тестируем работу с БД
    

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16. BasePostgresTest
    A
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    C
    EpicRepositoryTest
    C
    void createEpic(){
    ..!
    }
    // выносим конфигурацию в базовый класс
    C
    MilestoneRepositoryTest
    C
    void getMilestone(){
    ..!
    }
    

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17. BasePostgresTest
    A
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    C
    EpicRepositoryTest
    C
    void createEpic(){
    ..!
    }
    C
    MilestoneRepositoryTest
    C
    void getMilestone(){
    ..!
    }
    ?
    // а на какой базе тестируем?
    

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18. BasePostgresTest
    A
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    C
    EpicRepositoryTest
    C
    void createEpic(){
    ..!
    }
    C
    MilestoneRepositoryTest
    C
    void getMilestone(){
    ..!
    }
    H2
    // а на какой базе тестируем?
    

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19. // тестировать работу с базой на H2
    

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20. PostgreSQL
    BasePostgresTest
    A
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    AnyRepositoryTest
    C
    void testAny(){
    ..!
    }
    AnyRepositoryTest
    C
    void testAny(){
    ..!
    }
    TaskServiceTest
    C
    void testGetTask(){
    ..!
    }
    

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21. PostgreSQL
    BasePostgresTest
    A
    TaskRepositoryTest
    C
    void testFindAll(){
    ..!
    }
    AnyRepositoryTest
    C
    void testAny(){
    ..!
    }
    AnyRepositoryTest
    C
    void testAny(){
    ..!
    }
    TaskServiceTest
    C
    void testGetTask(){
    ..!
    }
    // заглянем
    // внутрь
    // тестов
    

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22. public class TaskServiceTest extends BasePostgresTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    

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23. public class TaskServiceTest extends BasePostgresTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    

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24. public class TaskServiceTest extends BasePostgresTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    

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25. public class TaskServiceTest extends BasePostgresTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    

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26. public class TaskServiceTest extends BasePostgresTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    // а что внутри BasePostgresTest?
    

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27. @RunWith(SpringRunner.class)
    @DataJpaTest
    public abstract class BasePostgresTest {
    @Rule
    public DBUnitRule dbUnitRule =
    DBUnitRule.instance(() -> {
    ...
    });
    @Rule
    public PostgreSQLContainer postgres =
    new PostgreSQLContainer();
    }
    

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28. @RunWith(SpringRunner.class)
    @DataJpaTest
    public abstract class BasePostgresTest {
    @Rule
    public DBUnitRule dbUnitRule =
    DBUnitRule.instance(() -> {
    ...
    });
    @Rule
    public PostgreSQLContainer postgres =
    new PostgreSQLContainer();
    }
    

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29. @RunWith(SpringRunner.class)
    @DataJpaTest
    public abstract class BasePostgresTest {
    @Rule
    public DBUnitRule dbUnitRule =
    DBUnitRule.instance(() -> {
    ...
    });
    @Rule
    public PostgreSQLContainer postgres =
    new PostgreSQLContainer();
    }
    

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30. External
    Camunda
    BPM
    Monolith
    PostgreSQL
    BasePostgresTest
    A
    // тестируем работу с БД
    

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31. Monolith
    PostgreSQL
    External
    Camunda
    BPM
    BasePostgresTest
    A
    // тестирование монолита
    

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32. PostgreSQL
    Camunda
    BPM
    BasePostgresTest
    A
    External
    Monolith
    // тестируем отправку сообщений
    

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33. BaseRabbitMqTest
    A
    SendFirstEventTest
    C
    void testSend(){
    ..!
    }
    EventListenerTest
    C
    void testReceive(){
    ..!
    }
    

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34. PostgreSQL
    Camunda
    BPM
    BasePostgresTest
    A
    External
    Monolith
    BaseRabbitMqTest
    A
    // тестируем отправку сообщений
    

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35. Monolith
    PostgreSQL
    External
    Camunda
    BPM
    // тестирование монолита
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    

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36. Monolith
    PostgreSQL
    External
    Camunda
    BPM
    // тестирование
    // монолита
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseElasticTest
    A
    BaseBpmnTest
    A
    BaseMongoTest
    A
    

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37. План
    .
    - что мы хотим тестировать
    - как тестировали монолит
    - тесты в микросервисах
    - проблемы сопровождения
    - как использовать docker
    - что может пойти не так
    

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38. // распиливаем
    // монолит
    

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39. Document
    Service
    Complaint
    Service
    Search
    Service
    PostgreSQL
    MongoDB Elastic
    Search
    HR
    Service
    PostgreSQL
    REST
    REST
    Auth
    Service
    PostgreSQL
    // распиливаем
    // монолит
    

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40. Document
    Service
    Complaint
    Service
    Search
    Service
    PostgreSQL
    MongoDB Elastic
    Search
    REST
    REST
    Auth
    Service
    PostgreSQL
    HR
    Service
    PostgreSQL
    BasePostgresTest
    A
    BaseMvcTest
    A
    // тестируем
    

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41. Complaint
    Service
    Search
    Service
    PostgreSQL
    Elastic
    Search
    HR
    Service
    PostgreSQL
    REST
    REST
    Auth
    Service
    PostgreSQL
    BaseMongoTest
    A
    BaseMvcTest
    A
    Document
    Service
    MongoDB
    // тестируем
    

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42. Document
    Service
    Search
    Service
    PostgreSQL
    MongoDB Elastic
    Search
    HR
    Service
    PostgreSQL
    REST
    REST
    Auth
    Service
    BasePostgresTest
    A
    BaseMvcTest
    A
    Complaint
    Service
    PostgreSQL
    BaseRabbitMqTest
    A
    // тестируем
    

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43. Document
    Service
    Complaint
    Service
    PostgreSQL
    MongoDB
    HR
    Service
    PostgreSQL
    REST
    REST
    Auth
    Service
    PostgreSQL
    BaseElasticTest
    A
    BaseMvcTest
    A
    BaseRabbitMqTest
    A
    Search
    Service
    Elastic
    Search
    // тестируем
    

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44. План
    .
    - что мы хотим тестировать
    - как тестировали монолит
    - тесты в микросервисах
    - проблемы сопровождения
    - как использовать docker
    - что может пойти не так
    

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45. BasePostgresTest
    A
    BaseMvcTest
    A
    Auth
    Service
    BaseMongoTest
    A
    BaseMvcTest
    A
    Document
    Service
    Complaint
    Service
    BaseRabbitMqTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A
    Search
    Service
    BaseElasticTest
    A
    BaseMvcTest
    A
    BaseRabbitMqTest
    A
    

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46. BasePostgresTest
    A
    BaseMvcTest
    A
    Auth
    Service
    BaseMongoTest
    A
    Document
    Service
    Complaint
    Service
    BaseRabbitMqTest
    A
    BasePostgresTest
    A
    Search
    Service
    BaseElasticTest
    A
    BaseRabbitMqTest
    A
    BaseMvcTest
    A
    BaseMvcTest
    A BaseMvcTest
    A
    

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47. BasePostgresTest
    A
    BaseMvcTest
    A
    Auth
    Service
    BaseMongoTest
    A
    Document
    Service
    Complaint
    Service
    BaseRabbitMqTest
    A
    Search
    Service
    BaseElasticTest
    A
    BaseRabbitMqTest
    A
    BaseMvcTest
    A
    BaseMvcTest
    A BaseMvcTest
    A
    BasePostgresTest
    A
    

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48. BasePostgresTest
    A
    BaseMvcTest
    A
    Auth
    Service
    BaseMongoTest
    A
    Document
    Service
    Complaint
    Service
    BaseRabbitMqTest
    A
    Search
    Service
    BaseElasticTest
    A
    BaseMvcTest
    A
    BaseMvcTest
    A BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    

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49. Document
    Service
    Complaint
    Service
    Search
    Service
    HR
    Service
    Template
    Service
    Message
    Service
    Timer
    Service
    // сервисов
    // становится
    // больше
    

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50. Document
    Service
    Complaint
    Service
    Search
    Service
    HR
    Service
    Template
    Service
    Message
    Service
    Timer
    Service
    // сервисов
    // становится
    // больше
    Auth
    Service
    Notify
    Service
    Delivery
    Service
    Point
    Service
    Delivery Favorite
    Comments
    Service
    Poll
    Service
    Wiki
    Service
    Subscribe
    Service
    Report
    Service
    

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51. Auth
    Service
    Document
    Service
    Complaint
    Service
    Search
    Service
    HR
    Service
    Template
    Service
    Message
    Service
    Notify
    Service
    Report
    Service
    Delivery
    Service
    Point
    Service
    BPMN
    Service
    Chat
    Service
    Calendar
    Service
    Timer
    Service
    Link
    Service
    Folder
    Service
    Delivery
    Gate
    Service
    Content
    Service
    Favorite
    Static
    Service
    Group
    Service
    Map
    Service
    Comments
    Service
    Poll
    Service
    Wiki
    Service
    Sign
    Subscribe
    Service
    CaseFile
    Service
    Config
    Service
    // сервисов
    // становится
    // больше
    

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52. // Продолжать копировать базовые классы?
    

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53. Auth
    Service
    Document
    Service
    Complaint
    Service
    Search
    Service
    // как можно решить эту проблему?
    BasePostgresTest
    A
    BaseMvcTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A BaseRabbitMqTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A BaseElasticTest
    A
    BaseMvcTest
    A
    BaseRabbitMqTest
    A
    

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54. abstract-tests.jar
    // вынесем в отдельную зависимость
    Auth
    Service
    Document
    Service
    Complaint
    Service
    Search
    Service
    BaseMongoTest
    A
    BaseElasticTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseActiveMqTest
    A
    

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55. abstract-tests.jar
    // всегда ли нужны все конфигурации
    Document
    Service
    BaseMongoTest
    A
    BaseElasticTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseActiveMqTest
    A
    

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56. spring-boot-starter-activemq
    spring-boot-starter-data-jpa
    spring-boot-starter-web
    spring-boot-starter-data-mongodb org.postgresql
    org.testcontainers
    BaseMongoTest
    A
    BaseElasticTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseActiveMqTest
    A
    // много лишних зависимостей
    Document
    Service
    abstract-tests.jar
    

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57. spring-boot-starter-data-jpa
    spring-boot-starter-web
    org.postgresql
    org.testcontainers org.testcontainers
    spring-boot-starter-
    data-mongodb
    pg-tests.jar
    mvc-tests.jar
    mongo-tests.jar
    BasePostgresTest
    A BaseMvcTest
    A
    Data
    Service
    Web
    Service
    Document
    Service
    BaseMongoTest
    A
    // разделим по логике
    

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58. mvc-test.jar postgres-test.jar
    // А что, если нужно и то и другое?
    BaseMvcTest
    A BasePostgresTest
    A
    TaskControllerTest
    C
    void create() {..}
    void get() {..}
    void delete() {..}
    

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59. Еще один
    абстрактный класс
    // как бы мы сделали это в монолите
    PostgreSQL
    MVC
    Context
    Сonfig
    BasePostgresMvcTest
    A
    TaskControllerTest
    C
    void create() {..}
    void get() {..}
    void delete() {..}
    

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60. // и так придется делать для каждой комбинации
    BaseMvcTest
    A
    BasePostgresTest
    A
    

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61. // и так придется делать для каждой комбинации
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseElasticTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    

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62. // и так придется делать для каждой комбинации
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseElasticTest
    A
    BaseMongoTest
    A
    BaseElasticTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A BaseRabbitMqTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    BaseElasticTest
    A
    BaseRabbitMqTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    BaseElasticTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    

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63. // и так придется делать для каждой комбинации
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseElasticTest
    A
    BaseMongoTest
    A
    BaseElasticTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A BaseRabbitMqTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    BaseElasticTest
    A
    BaseRabbitMqTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    BaseElasticTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    BaseRabbitMqTest
    A
    BaseElasticTest
    A
    BaseElasticTest
    A
    BasePostgresTest
    A
    BaseMvcTest
    A
    BasePostgresTest
    A
    BaseRabbitMqTest
    A
    BaseMongoTest
    A
    BaseMongoTest
    A
    BaseMvcTest
    A
    

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64. Не – не – не,
    моя умея только копироватя,
    Сопровождать
    моя не училса
    

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65. Еще один
    абстрактный класс
    // как бы мы сделали это в монолите
    PostgreSQL
    MVC
    Context
    Сonfig
    BasePostgresMvcTest
    A
    TaskControllerTest
    C
    void create() {..}
    void get() {..}
    void delete() {..}
    

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66. mvc-test.jar postgres-test.jar
    // А что в микросервисах?
    BasePostgresMvcTest
    A
    TaskControllerTest
    C
    void create() {..}
    void get() {..}
    void delete() {..}
    PostgreSQL
    MVC
    Context
    Сonfig
    

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67. mvc-test.jar postgres-test.jar
    // А что в микросервисах?
    BasePostgresMvcTest
    A
    TaskControllerTest
    C
    void create() {..}
    void get() {..}
    void delete() {..}
    PostgreSQL
    MVC
    Context
    Сonfig
    WARNING! DO NOT INHERIT TESTS!
    

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68. public class TaskServiceTest extends BasePostgresMvcTest {
    @Test
    @DataSet(value = "datasets/task.json”)
    public void getTask() {
    Task task = taskService.get(TASK_ID);
    assertThat(task).isNotNull();
    }
    }
    

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69. @EnableMvcTest
    @EnablePostgresTest
    public class TaskServiceTest {
    @Test
    public void getTask() {
    ...
    }
    }
    // заменим наследование мета-аннотациями
    

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70. @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    @RunWith(SpringRunner.class)
    @AutoConfigureMockMvc
    public @interface EnableMvcTests {
    }
    // что внутри @EnableMvcTests?
    

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71. @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    @RunWith(SpringRunner.class)
    @DataJpaTest
    @AutoConfigureTestDatabase(replace = NONE)
    public @interface EnablePostgresTests {
    }
    // что внутри @EnablePostgresTests?
    

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72. 1: @Retention(RetentionPolicy.RUNTIME)
    2: @Target(ElementType.TYPE)
    3: @RunWith(SpringRunner.class)
    4: @DataJpaTest
    5: @AutoConfigureTestDatabase(replace = NONE)
    6: public @interface EnablePostgresTests {
    7:
    8: }
    // Не все так просто
    

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73. 1: @Retention(RetentionPolicy.RUNTIME)
    2: @Target(ElementType.TYPE)
    3: @RunWith(SpringRunner.class)
    4: @DataJpaTest
    5: @AutoConfigureTestDatabase(replace = NONE)
    6: public @interface EnablePostgresTests {
    7:
    8: }
    // Не все так просто
    

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74. JUnit4 @RunWith
    •  class level
    •  non repeatable
    

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75. // Решение
    

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76. @Retention(RetentionPolicy.RUNTIME)
    @Target(ElementType.TYPE)
    @ExtendWith(SpringExtension.class)
    @DataJpaTest
    @AutoConfigureTestDatabase(replace = NONE)
    public @interface EnableDataTests {
    }
    Repeatable & Inherited
    // Мета-аннотации и ExtendWith
    

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77. @EnablePostgresTest
    class TaskServiceTest {
    @Test
    void getTask() {
    ...
    }
    }
    // Компонуем, как хотим
    

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78. @EnableMvcTest
    @EnablePostgresTest
    class TaskServiceTest {
    @Test
    void getTask() {
    ...
    }
    }
    // Компонуем, как хотим
    

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79. @EnableMvcTest
    @EnablePostgresTest
    @EnableRabbitMqTest
    class TaskServiceTest {
    @Test
    void getTask() {
    ...
    }
    }
    // Компонуем, как хотим
    

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80. @EnableMongoDbTest
    class DocumentServiceTest {
    @Test
    void get() {
    ...
    }
    }
    // Компонуем, как хотим
    

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81. @EnableMvcTest
    @EnableMongoDbTest
    class DocumentServiceTest {
    @Test
    void get() {
    ...
    }
    }
    // Компонуем, как хотим
    

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82. @EnableMvcTest
    @EnableMongoDbTest
    @EnableActiveMqTest
    class DocumentServiceTest {
    @Test
    void get() {
    ...
    }
    }
    // Компонуем, как хотим
    

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83. хранимые процедуры
    нативные запросы
    расширения postgres
    // тестируем
    

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84. PostgresTestContainersExtension
    C
    EnablePostgresTestContainers
    @
    PostgreSQL
    

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85. PostgresTestContainersExtension
    C
    EnablePostgresTestContainers
    @
    PostgreSQL
    EnablePostgresIntegrationTest
    @ EnablePostgresDataTest
    @
    

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86. @EnablePostgresDataTest!
    class NativeFunctionTest {!
    !
    @PersistenceContext private EntityManager entityManager;!
    !
    @Test!
    @Sql("/stored_functions/magic_func.sql")!
    void testStoredFunc() {!
    StoredProcedureQuery query =
    entityManager.createStoredProcedureQuery(”magic");!
    !
    query.execute();
    List resultList = query.getResultList();
    !
    int result = (int) resultList.get(0);!
    Assertions.assertThat(result).isEqualTo(1234);!
    }!
    }
    

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87. @EnablePostgresDataTest!
    class NativeFunctionTest {!
    !
    @PersistenceContext private EntityManager entityManager;!
    !
    @Test!
    @Sql("/stored_functions/magic_func.sql")!
    void testStoredFunc() {!
    StoredProcedureQuery query =
    entityManager.createStoredProcedureQuery(”magic");!
    !
    query.execute();
    List resultList = query.getResultList();
    !
    int result = (int) resultList.get(0);!
    Assertions.assertThat(result).isEqualTo(1234);!
    }!
    }
    

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88. @EnablePostgresDataTest!
    class NativeFunctionTest {!
    !
    @PersistenceContext private EntityManager entityManager;!
    !
    @Test!
    @Sql("/stored_functions/magic_func.sql")!
    void testStoredFunc() {!
    StoredProcedureQuery query =
    entityManager.createStoredProcedureQuery(”magic");!
    !
    query.execute();
    List resultList = query.getResultList();
    !
    int result = (int) resultList.get(0);!
    Assertions.assertThat(result).isEqualTo(1234);!
    }!
    }
    

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89. View Slide

90. @EnablePostgresDataTest!
    class NativeFunctionTest {!
    !
    @PersistenceContext private EntityManager entityManager;!
    !
    @Test!
    @Sql("/stored_functions/magic_func.sql")!
    void testStoredFunc() {!
    StoredProcedureQuery query =
    entityManager.createStoredProcedureQuery(”magic");!
    !
    query.execute();
    List resultList = query.getResultList();
    !
    int result = (int) resultList.get(0);!
    Assertions.assertThat(result).isEqualTo(1234);!
    }!
    }
    

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91. @EnablePostgresDataTest!
    class NativeFunctionTest {!
    !
    @PersistenceContext private EntityManager entityManager;!
    !
    @Test!
    @Sql("/stored_functions/magic_func.sql")!
    void testStoredFunc() {!
    StoredProcedureQuery query =
    entityManager.createStoredProcedureQuery(”magic");!
    !
    query.execute();
    List resultList = query.getResultList();
    !
    int result = (int) resultList.get(0);!
    Assertions.assertThat(result).isEqualTo(1234);!
    }!
    }
    

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92. // тестируем
    валидация дата-сетов
    агрегации в mongodb
    

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93. // Тоже самое для MongoDB
    MongoDbTestContainersExtension
    C
    EnableMongoDbTestContainers
    @
    

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94. // Тоже самое для MongoDB
    MongoDbTestContainersExtension
    C MongoDbExtension
    C
    ExpectedMongoDataSet
    @ ExpectedMongoDataSet
    @
    EnableMongoDbTestContainers
    @
    

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95. @MongoDbIntegrationTest
    class MongoTest {
    @Autowired
    private MongoTemplate mongoTemplate;
    @Test
    @MongoDataSet(value = "/dataset/bar_dataset.json")
    void testFindById() {
    Bar bar = mongoTemplate.findById("55ffed", Bar.class);
    Assertions.assertThat(bar)
    .isNotNull()
    .extracting(Bar::getData)
    .containsOnly(“A New Hope");
    }
    }
    

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96. @MongoDbIntegrationTest
    class MongoTest {
    @Autowired
    private MongoTemplate mongoTemplate;
    @Test
    @MongoDataSet(value = "/dataset/bar_dataset.json")
    void testFindById() {
    Bar bar = mongoTemplate.findById("55ffed", Bar.class);
    Assertions.assertThat(bar)
    .isNotNull()
    .extracting(Bar::getData)
    .containsOnly(“A New Hope");
    }
    }
    

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97. @MongoDbIntegrationTest
    class MongoTest {
    @Autowired
    private MongoTemplate mongoTemplate;
    @Test
    @MongoDataSet(value = "/dataset/bar_dataset.json")
    void testFindById() {
    Bar bar = mongoTemplate.findById("55ffed", Bar.class);
    Assertions.assertThat(bar)
    .isNotNull()
    .extracting(Bar::getData)
    .containsOnly(“A New Hope");
    }
    }
    

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98. {
    "com.antkorwin.springtestmongo.Bar": [
    {
    "id” : "18300a",
    "data” : "Wild Coyote"
    },
    {
    "id” : "55ffed",
    "data” : "A New Hope"
    }
    ]
    }
    

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99. @MongoDbIntegrationTest
    class MongoTest {
    @Autowired
    private MongoTemplate mongoTemplate;
    @Test
    @MongoDataSet(value = "/dataset/bar_dataset.json")
    void testFindById() {
    Bar bar = mongoTemplate.findById("55ffed", Bar.class);
    Assertions.assertThat(bar)
    .isNotNull()
    .extracting(Bar::getData)
    .containsOnly(“A New Hope");
    }
    }
    

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100. @MongoDbIntegrationTest
     class MongoTest {
     @Autowired
     private MongoTemplate mongoTemplate;
     @Test
     @MongoDataSet(value = "/dataset/bar_dataset.json")
     void testFindById() {
     Bar bar = mongoTemplate.findById("55ffed", Bar.class);
     Assertions.assertThat(bar)
     .isNotNull()
     .extracting(Bar::getData)
     .containsOnly(“A New Hope");
     }
     }
     

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101. @Test
     @ExpectedMongoDataSet("dataset/expected_tasks.json")
     void dateTimeNow() {
     Task firstTask = Task.builder()
     .title("Turn to the dark side of the Force")
     .dueDate(new Date())
     .build();
     Task secondTask = Task.builder()
     .title("Defeat the resistance forces")
     .dueDate(tomorrow())
     .build();
     mongoTemplate.save(firstTask);
     mongoTemplate.save(secondTask);
     }
     

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102. @Test
     @ExpectedMongoDataSet("dataset/expected_tasks.json")
     void dateTimeNow() {
     Task firstTask = Task.builder()
     .title("Turn to the dark side of the Force")
     .dueDate(new Date())
     .build();
     Task secondTask = Task.builder()
     .title("Defeat the resistance forces")
     .dueDate(tomorrow())
     .build();
     mongoTemplate.save(firstTask);
     mongoTemplate.save(secondTask);
     }
     

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103. @Test
     @ExpectedMongoDataSet("dataset/expected_tasks.json")
     void dateTimeNow() {
     Task firstTask = Task.builder()
     .title("Turn to the dark side of the Force")
     .dueDate(new Date())
     .build();
     Task secondTask = Task.builder()
     .title("Defeat the resistance forces")
     .dueDate(tomorrow())
     .build();
     mongoTemplate.save(firstTask);
     mongoTemplate.save(secondTask);
     }
     

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104. @Test
     @ExpectedMongoDataSet("dataset/expected_tasks.json")
     void dateTimeNow() {
     Task firstTask = Task.builder()
     .title("Turn to the dark side of the Force")
     .dueDate(new Date())
     .build();
     Task secondTask = Task.builder()
     .title("Defeat the resistance forces")
     .dueDate(tomorrow())
     .build();
     mongoTemplate.save(firstTask);
     mongoTemplate.save(secondTask);
     }
     

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105. @Test
     @ExpectedMongoDataSet("dataset/expected_tasks.json")
     void dateTimeNow() {
     Task firstTask = Task.builder()
     .title("Turn to the dark side of the Force")
     .dueDate(new Date())
     .build();
     Task secondTask = Task.builder()
     .title("Defeat the resistance forces")
     .dueDate(tomorrow())
     .build();
     mongoTemplate.save(firstTask);
     mongoTemplate.save(secondTask);
     }
     

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106. {
     "com.antkorwin.starwars.mongotest.Task": [
     {
     "dueDate” : "date-match:[NOW]",
     "title" : "Turn to the dark side of the Force"
     },
     {
     ”dueDate” : "date-match:[NOW]+1(DAYS)",
     "title” : "Defeat the resistance forces"
     }
     ]
     }
     

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107. {
     "com.antkorwin.starwars.mongotest.Task": [
     {
     "dueDate” : "date-match:[NOW]",
     "title" : "Turn to the dark side of the Force"
     },
     {
     ”dueDate” : "date-match:[NOW]+1(DAYS)",
     "title” : "Defeat the resistance forces"
     }
     ]
     }
     

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108. // тестируем
     валидация дата-сетов
     конвертацию данных
     

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109. RabbitMqTestContainersExtension
     C
     EnableRabbitMqTestContainers
     @
     RabbitMqMessagesExtension
     C
     ExpectedMessages
     @
     

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110. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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111. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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112. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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113. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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114. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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115. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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116. {
     "com.antkorwin.starwars.rabbitmq.Dreadnought": [
     {
     "stormtroopers” : "20000"
     }
     ],
     "com.antkorwin.starwars.rabbitmq.XWing":[
     {
     "name” : "Alpha",
     "stormtroopers” : 3
     },
     {
     "name” : "Bravo",
     "stormtroopers” : 4
     }
     ]
     }
     

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117. @EnableRabbitMqTest
     class StarWarsAsyncTest{
     @Autowired
     private AmqpTemplate amqpTemplate;
     @Test
     @ExpectedMessages(queue = ”build-queue",
     messagesFile = “expected_messages.json")
     void testSendListOfMessages() {
     amqpTemplate.convertAndSend("build-queue",
     new Dreadnought(20000));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Alpha", 3));
     amqpTemplate.convertAndSend("build-queue",
     new XWing("Bravo", 4));
     }
     

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118. План
     .
     - что мы хотим тестировать
     - как тестировали монолит
     - тесты в микросервисах
     - проблемы сопровождения
     - как использовать docker
     - что может пойти не так
     

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119. TestContainers!
     

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120. @Retention(RetentionPolicy.RUNTIME)
     @Target(ElementType.TYPE)
     @ExtendWith(PostgresTcExtension.class)
     public @interface EnablePostgresTestContainers {
     }
     

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121. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     

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122. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     

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123. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     

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124. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     // что не так?
     

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125. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     // зачем так?
     

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126. public class PostgresTcExtension implements Extension {
     static {
     PostgreSQLContainer postgres = new PostgreSQLContainer();
     postgres.start();
     System.setProperty(”spring.datasource.driver-class-name”,
     postgres.getDriverClassName());
     System.setProperty(”spring.datasource.url”,
     postgres.getJdbcUrl());
     System.setProperty(”spring.datasource.username”,
     postgres.getUsername());
     System.setProperty(”spring.datasource.password”,
     postgres.getPassword());
     }
     }
     // зачем так?
     хотим один контейнер ,
     на прогон всех тестов,
     

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127. Поищем в
     JUnit5 ?
     Нужен
     BeforeSuite
     callback !
     

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128. invokeBeforeEachCallbacks(context);
     if (throwableCollector.isEmpty()) {
     invokeBeforeEachMethods(context);
     if (throwableCollector.isEmpty()) {
     invokeBeforeTestExecutionCallbacks(context);
     if (throwableCollector.isEmpty()) {
     invokeTestMethod(context,
     dynamicTestExecutor);
     }
     invokeAfterTestExecutionCallbacks(context);
     }
     invokeAfterEachMethods(context);
     }
     invokeAfterEachCallbacks(context);
     // нужен BeforeSuite callback
     

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129. Возможно, скоро будет…
     

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130. Сделай
     cвой Extension
     

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131. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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132. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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133. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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134. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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135. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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136. public class PostgresTestExtension
     implements BeforeAllCallback {
     @Override
     public void beforeAll(ExtensionContext context)
     throws Exception {
     if (containerAlreadyStarted(context)) return;
     if (!findTag(getTestDescriptor(context), TC_TAG)) return;
     startContainer();
     markAsStarted(context);
     }
     }
     

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137. private void markAsStarted(ExtensionContext context) {,
     ,
     context.getRoot(),
     .getStore(NAMESPACE),
     .put(TESTCONTAINERS_PG_TAG, true);,
     },
     Шарим данные между:
     -  тестовыми методами
     -  тестовыми классами
     // используем ExtensionContext
     

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138. А удалять
     контейнеры
     кто будет?
     

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139. // а как подключить Extension ко всем тестам?
     ATest
     BTest
     CTest
     BeforeSuite
     Extension
     

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140. /resources/META-INF/services/
     org.junit.jupiter.api.extension.Extension,,,
     com.....PostgresTestExtension ,
     ,
     ,
     /resources/,
     junit-platform.properties,
     ,
     junit.jupiter.extensions.autodetection.enabled = true
     ,
     // делаем глобальный Extension
     

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141. static init. block custom before suite
     

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142. static init. block custom before suite
     less clean code more clean code
     

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143. static init. block custom before suite
     junit4 и junit5
     less clean code more clean code
     только junit5
     

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144. static init. block custom before suite
     junit4 и junit5
     less clean code
     прост в написании
     more clean code
     только junit5
     сложная конструкция
     

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145. static init. block custom before suite
     junit4 и junit5
     less clean code
     прост в написании
     легко компоновать
     junit-platform.properties,
     more clean code
     только junit5
     сложная конструкция
     переопределение
     

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146. DEMO
     

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147. // Выводы
     С JUnit5 можно уменьшить дублирование кода
     в микросервисных проектах
     Мета-аннотации помогают собрать нужную
     конфигурацию теста, как из конструктора
     Вместе с TestContainers можно использовать
     production-окружение в тестах
     

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148. // Выводы
     С JUnit5 можно уменьшить дублирование кода
     в микросервисных проектах
     Мета-аннотации помогают собрать нужную
     конфигурацию теста, как из конструктора
     Вместе с TestContainers можно использовать
     production-окружение в тестах
     

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149. // Выводы
     С JUnit5 можно уменьшить дублирование кода
     в микросервисных проектах
     Мета-аннотации помогают собрать нужную
     конфигурацию теста, как из конструктора
     Вместе с TestContainers можно использовать
     production-окружение в тестах
     

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150. План
     .
     - что мы хотим тестировать
     - как тестировали монолит
     - тесты в микросервисах
     - проблемы сопровождения
     - как использовать docker
     - что может пойти не так
     
     

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151. Работает:
     Не работает:
     CTest
     ATest
     BTest
     ATest
     BTest
     CTest
     

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152. Темная сторона
     Context Caching,
     

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153. KEY CONTEXT
     EMPTY_CACHE
     ATest
     BTest
     CTest
     

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154. KEY CONTEXT
     EMPTY_CACHE
     @SpringBootTest
     @ExtendWith(SpringExtension.class)
     class ATest {
     @Autowired
     private TemplateService templateService;
     @Test
     void build() {
     String result = templateService.build(“%d + %d = %d”,
     1, 2, 3);
     assertThat(result).isEqualTo(“1 + 2 = 3”);
     }
     ATest
     BTest
     CTest
     

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155. ATest
     BTest
     CTest
     @SpringBootTest
     @ExtendWith(SpringExtension.class)
     class ATest {
     @Autowired
     private TemplateService templateService;
     @Test
     void build() {
     String result = templateService.build(“%d + %d = %d”,
     1, 2, 3);
     assertThat(result).isEqualTo(“1 + 2 = 3”);
     }
     put(key, context)
     

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156. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     class ATest {
     @Autowired
     private TemplateService templateService;
     @Test
     void build() {
     String result = templateService.build(“%d + %d = %d”,
     1, 2, 3);
     assertThat(result).isEqualTo(“1 + 2 = 3”);
     }
     ATest
     BTest
     CTest
     

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157. @DataJpaTest
     @ExtendWith(SpringExtension.class)
     class BTest {
     @Test
     void createTest() {
     ...
     }
     }
     get(key)
     ATest
     BTest
     CTest
     

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158. put(key, context)
     @DataJpaTest
     @ExtendWith(SpringExtension.class)
     class BTest {
     @Test
     void createTest() {
     ...
     }
     }
     ATest
     BTest
     CTest
     

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159. @DataJpaTest
     @ExtendWith(SpringExtension.class)
     class BTest {
     @Test
     void createTest() {
     ...
     }
     }
     ATest
     BTest
     CTest
     

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160. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     @Autowired
     private DeliveryService deliveryService;
     @Test
     @ExpectedMessage(queue = ”test-queue", message = "secret text")
     void sendMessageTest() {
     deliveryService.sendMessage("secret text");
     }
     }
     ATest
     BTest
     CTest
     

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161. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     @Autowired
     private DeliveryService deliveryService;
     @Test
     @ExpectedMessage(queue = ”test-queue", message = "secret text”)
     void sendMessageTest() {
     deliveryService.sendMessage("secret text");
     }
     }
     get(key)
     ATest
     BTest
     CTest
     

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162. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     @Autowired
     private DeliveryService deliveryService;
     @Test
     @ExpectedMessage(queue = ”test-queue", message = "secret text”)
     void sendMessageTest() {
     deliveryService.sendMessage("secret text");
     }
     }
     ATest
     BTest
     CTest
     

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163. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     @Autowired
     private DeliveryService deliveryService;
     @Test
     @ExpectedMessage(queue = "test-queue", message = "secret text")
     void sendMessageTest() {
     deliveryService.sendMessage("secret text");
     }
     }
     ATest
     BTest
     CTest
     

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164. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     ...
     

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165. @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     ...
     

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166. @Retention(RetentionPolicy.RUNTIME)!
     @Target(ElementType.TYPE)!
     @ExtendWith(RabbitMqTcExtension.class)!
     public @interface EnableRabbitMqTestContainers {!
     }
     !
     

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167. @Retention(RetentionPolicy.RUNTIME)!
     @Target(ElementType.TYPE)!
     @ExtendWith(RabbitMqTcExtension.class)!
     public @interface EnableRabbitMqTestContainers {!
     }
     !
     

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168. View Slide

169. View Slide

170. View Slide

171. Как работает
     Spring и JUnit
     

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172. Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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173. RabbitMqExtension
     newInstance
     SpringExtension
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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174. RabbitMqExtension
     newInstance
     SpringExtension
     static {
     ...
     }
     
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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175. RabbitMqExtension
     newInstance
     SpringExtension
     static {
     ...
     }
     
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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176. SpringExtension
     BeforeAll
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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177. SpringExtension
     TestContextManager
     BeforeAll
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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178. SpringExtension
     TestContextManager
     TestExecutionListener
     BeforeAll
     foreach:
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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179. SpringExtension
     TestContextManager
     TestExecutionListener
     foreach:
     BeforeAll
     DirtiesContextBeforeModesTestExecutionListener
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     beforeTestClass:
     

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180. SpringExtension
     postProcess
     TestInstance
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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181. SpringExtension
     postProcess
     TestInstance
     TestContextManager
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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182. SpringExtension
     TestExecutionListener
     postProcess
     TestInstance
     TestContextManager
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     foreach:
     

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183. Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     SpringExtension
     TestExecutionListener
     DependencyInjectionTestExecutionListener
     postProcess
     TestInstance
     TestContextManager
     prepareTestInstance:
     

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184. DependencyInjectionTestExecutionListener
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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185. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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186. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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187. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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188. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     FileProperties
     

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189. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     FileProperties
     SystemProperties
     

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190. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     FileProperties
     SystemProperties
     InlinedProperties
     

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191. SpringBootContextLoader
     DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     loadContext SystemProperties
     FileProperties
     InlinedProperties
     ActiveProfiles
     ConfigClasses
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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192. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     loadContext
     SpringBootContextLoader
     SpringApplication
     run
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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193. SpringApplication
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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194. SpringApplication
     prepareEnvironment
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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195. SpringApplication
     prepareEnvironment
     ConfigFileApplicationListener
     ApplicationEnvironmentPreparedEvent
     EPP 1 EPP 2 EPP 3
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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196. // The Force here:
     

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197. SpringApplication
     prepareEnvironment
     ConfigFileApplicationListener
     ApplicationEnvironmentPreparedEvent
     EPP 1 EPP 2 EPP 3
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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198. SpringApplication
     prepareEnvironment prepareContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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199. SpringApplication
     prepareEnvironment
     Magic!!!
     prepareContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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200. SpringApplication
     prepareEnvironment prepareContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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201. SpringApplication
     prepareEnvironment prepareContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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202. SpringApplication
     prepareEnvironment prepareContext
     ApplicationContextInitializer
     foreach:
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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203. SpringApplication
     prepareEnvironment prepareContext refreshContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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204. SpringApplication
     prepareEnvironment prepareContext refreshContext
     BeanFactories
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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205. SpringApplication
     prepareEnvironment prepareContext refreshContext
     BeanFactories
     BeanPostProcessors
     foreach:
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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206. SpringApplication
     prepareEnvironment prepareContext refreshContext
     BeanFactories
     BeanPostProcessors
     ConfigurationPropertiesBindingPostProcessor
     foreach:
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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207. Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     SpringApplication
     prepareEnvironment prepareContext refreshContext
     BeanFactories
     BeanPostProcessors
     ConfigurationPropertiesBindingPostProcessor
     foreach:
     

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208. SpringApplication
     prepareEnvironment prepareContext refreshContext
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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209. DependencyInjectionTestExecutionListener
     DefaultCacheAwareContextLoaderDelegate
     loadContext
     ContextCache
     get loadContext
     SpringBootContextLoader
     put
     Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     

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210. Create
     Extensions
     BeforeAll
     PostProcess
     TestInstance
     Load
     Context
     Invoke
     TestMethod
     @SpringBootTest
     @ExtendWith(SpringExtension.class)
     @EnableRabbitMqTestContainers
     class CTest {
     @Test
     void sendMessageTest() {
     ...
     }
     }
     

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211. container.start();
     !
     setProperty(”host”, …);!
     setProperty(”port”, …);
     

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212. Load
     Context
     EMPTY CACHE
     container.start();
     !
     setProperty(”host”, …);!
     setProperty(”port”, …);
     

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213. Load
     Context
     Prepare
     Environment
     EMPTY CACHE
     container.start();
     !
     setProperty(”host”, …);!
     setProperty(”port”, …);
     

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214. Load
     Context
     Prepare
     Environment
     Test
     Run
     EMPTY CACHE
     container.start();
     !
     setProperty(”host”, …);!
     setProperty(”port”, …);
     

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215. container.start();
     !
     setProperty(”host”, …);!
     setProperty(”port”, …);
     Load
     Context
     Prepare
     Environment
     Test
     Run
     LOAD FROM CACHE
     EMPTY CACHE
     

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216. View Slide

217. View Slide

218. View Slide

219. // Что делать?
     DarthVaderTest
     

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220. JediTest
     YodaTest
     AnakinSkywalkerTest
     JarJarBinksTest
     BobaFettTest
     ObiWanKenobiTest
     DartMaulTest
     LukeSkywalkerTest
     DarthVaderTest
     // Что делать?
     

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221. JediTest
     YodaTest
     AnakinSkywalkerTest
     JarJarBinksTest
     BobaFettTest
     ObiWanKenobiTest
     DartMaulTest
     LukeSkywalkerTest
     DarthVaderTest
     // Что делать?
     

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222. JediTest
     YodaTest
     AnakinSkywalkerTest
     JarJarBinksTest
     BobaFettTest
     ObiWanKenobiTest
     DartMaulTest
     LukeSkywalkerTest
     DarthVaderTest
     // Что делать?
     Turn to the dark side
     Context mutation
     

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223. 100
     10
     интеграционных тестов
     уникальных контекстов
     // Может без КЭША обойдемся?
     ~12 sec старт нового контекста
     2 min
     20 min
     с кэшем
     без кэша
     

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224. // Выводы
     С JUnit5 можно уменьшить дублирование кода
     в микросервисных проектах
     Мета-аннотации помогают собрать нужную
     конфигурацию теста, как из конструктора
     Вместе с TestContainers можно использовать
     production-окружение в тестах
     Spring Context Caching – сложный механизм,
     нужно понимать, как он работает
     

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225. github.com/jupiter-tools
     Pull requests &
     feature requests
     are welcome!
     antkorwin
     t.me/test_tools
     

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