将自定义 DB docker-image 与 Testcontainers 一起使用

Question

我是 Testcontainers 的新手，所以我有一个问题。 我在 Spring/Hibernate 上有应用程序。我有 docker-image (h2testbase) 和 mysql-base (myTestDb) 和数据。我使用 -p 6161:3306 在 docker 中运行该图像。在 test/resources 目录中，我有文件 application.properties。它包含下一个

jdbc.driverClassName=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:6161/myTestDb?allowPublicKeyRetrieval=true&useUnicode=true&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=Europe/Moscow&&useSSL=false
jdbc.username=root
jdbc.cred=admin
hibernate.dialect=org.hibernate.dialect.MySQLDialect
hibernate.show_sql=true
hibernate.format_sql=true

我使用 mvn test - 它正在工作。现在我想用 Testcontainers 运行这些测试。我在 pom.xml 中添加了依赖

<dependency>
    <groupId>org.testcontainers</groupId>
    <artifactId>testcontainers</artifactId>
    <version>1.9.1</version>
</dependency>
    
<dependency>
    <groupId>org.testcontainers</groupId>
    <artifactId>mysql</artifactId>
    <version>1.9.1</version>
    <scope>test</scope>
</dependency>

我扩展了 MySQLContainer 类

public class TestMySQL extends MySQLContainer {

    public TestMySQL() {
        super();
    }

    public TestMySQL(String dockerImageName) {
        super(dockerImageName);
    }

    @Override
    public String getDriverClassName() {
        return "com.mysql.cj.jdbc.Driver";
    }
}

因为 MySQLContainer 使用 com.mysql.jdbc.Driver 并且它已被弃用。 我的测试（例如）

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = {
        HibernateConfiguration.class,
        SecurityConfiguration.class,
        SecurityInitializer.class,
        ViewConfiguration.class,
        ViewInitializer.class})
@WebAppConfiguration
public class ControllerServiceJTest {

    @ClassRule
    public static TestMySQL  container
            = new TestMySQL("h2testbase");

    @Autowired
    ControllerService controllerService;

    @Test
    public void stationPagination() {
        Map<String, Object> pag = controllerService.stationPagination(4);
        Assert.assertTrue(((List<Station>)pag.get("stations")).size() == 8);
    }

    @Test
    public void trainPagination() {
        Map<String, Object> pag = controllerService.trainPagination(1);
        Assert.assertTrue(((List<Train>)pag.get("trains")).size() == 20);
    }

    @Test
    public void switchHelper() {
        Assert.assertTrue(controllerService.stationSwitchHelper("BLUE").equals(URLs.REDIRECT_DASHSTATION + "/2"));
    }
}

我正在撞墙。如果我使用 mvn test，我会（通过 docker ps）看到容器已启动。它启动了两三次（并且映射在随机端口上进行，例如 328xx），但随后 maven 告诉

org.testcontainers.containers.ContainerLaunchException: Container startup failed
Caused by: org.rnorth.ducttape.RetryCountExceededException: Retry limit hit with exception
Caused by: org.testcontainers.containers.ContainerLaunchException: Could not create/start container
Caused by: org.rnorth.ducttape.TimeoutException: org.rnorth.ducttape.TimeoutException: java.util.concurrent.TimeoutException
Caused by: org.rnorth.ducttape.TimeoutException: java.util.concurrent.TimeoutException
Caused by: java.util.concurrent.TimeoutException

我现在该怎么办？如何告诉我的测试容器需要端口（6161）？如何使用 application.properties 中的参数？我找不到将自定义图像与数据库一起使用的代码示例。 提前谢谢你

更新 添加失败测试的完整结果。

[INFO] -------------------------------------------------------
[INFO]  T E S T S
[INFO] -------------------------------------------------------
[INFO] Running ru.javasch.metro.junit.ControllerServiceJTest
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
SLF4J: Failed to load class "org.slf4j.impl.StaticMDCBinder".
SLF4J: Defaulting to no-operation MDCAdapter implementation.
SLF4J: See http://www.slf4j.org/codes.html#no_static_mdc_binder for further details.
        ?? Checking the system...
        ? Docker version should be at least 1.6.0
        ? Docker environment should have more than 2GB free disk space
[ERROR] Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 97.189 s <<< FAILURE! - in ru.javasch.metro.junit.ControllerServiceJTest
[ERROR] ru.javasch.metro.junit.ControllerServiceJTest  Time elapsed: 97.187 s  <<< ERROR!
org.testcontainers.containers.ContainerLaunchException: Container startup failed
Caused by: org.rnorth.ducttape.RetryCountExceededException: Retry limit hit with exception
Caused by: org.testcontainers.containers.ContainerLaunchException: Could not create/start container
Caused by: org.rnorth.ducttape.TimeoutException: org.rnorth.ducttape.TimeoutException: java.util.concurrent.TimeoutException
Caused by: org.rnorth.ducttape.TimeoutException: java.util.concurrent.TimeoutException
Caused by: java.util.concurrent.TimeoutException

有一些信息。我尝试使用来自here 的 MySqlContainer 进行测试（使用我的 TestMySql）。当我使用干净的 mysql:5.5 图像时 - 一切都很好。但是当我尝试在容器中添加一些修改（例如 addFixedExposedPort）时，它没有启动，因为端口已经分配。如果我从脚本添加数据 - 它是“无法创建容器”。如果我尝试给它我的图像（h2testbase），再次“无法创建容器”。

Answer 1

看来你这里有两个问题。

1. Docker 将 mysql 服务器暴露在一个随机端口上，但您需要一个固定端口。要解决这个问题，您可以使用addFixedExposedPort 的GenericContainer 设置固定端口

   public class TestMySQL extends MySQLContainer {
   
       public TestMySQL(String dockerImageName) {
           super(dockerImageName);
           addFixedExposedPort(6161, MYSQL_PORT);
       }
   
       @Override
       public String getDriverClassName() {
           return "com.mysql.cj.jdbc.Driver";
       }
   }
   

2. 您可能没有数据库test、用户test 和密码test，因为它是MySQLContainer 中的默认凭据，这会导致您得到ContainerLaunchException。使用withDatabaseName、withUsername和withPassword正确配置DB和用户。

   @RunWith(SpringJUnit4ClassRunner.class)
   @ContextConfiguration(classes = {
       HibernateConfiguration.class,
       SecurityConfiguration.class,
       SecurityInitializer.class,
       ViewConfiguration.class,
       ViewInitializer.class})
   @WebAppConfiguration
   public class ControllerServiceJTest {
   
       @ClassRule
       public static TestMySQL  container
           = new TestMySQL("h2testbase")
             .withDatabaseName("myTestDb")
             .withUsername("root")
             .withPassword("admin");
   
       @Autowired
       ControllerService controllerService;
   
       @Test
       public void stationPagination() {
           Map<String, Object> pag = controllerService.stationPagination(4);
           Assert.assertTrue(((List<Station>)pag.get("stations")).size() == 8);
       }
   
       @Test
       public void trainPagination() {
           Map<String, Object> pag = controllerService.trainPagination(1);
           Assert.assertTrue(((List<Train>)pag.get("trains")).size() == 20);
       }
   
       @Test
       public void switchHelper() {
           Assert.assertTrue(controllerService.stationSwitchHelper("BLUE").equals(URLs.REDIRECT_DASHSTATION + "/2"));
       }
   }
   

更新：

要打开日志记录，请将以下依赖项添加到 pom.xml

    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
        <version>1.2.1</version>
    </dependency>

并使用以下内容创建src/test/resources/logback.xml

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger - %msg%n</pattern>
        </encoder>
    </appender>

    <root level="info">
        <appender-ref ref="STDOUT"/>
    </root>

    <logger name="org.testcontainers" level="DEBUG"/>
</configuration