在Testcontainers中使用自定义DB docker-image

Question

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

<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>

public class TestMySQL extends MySQLContainer {

    public TestMySQL() {
        super();
    }

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

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

因为使用com.mysql.jdbc.driver的MySQLContainer不推荐使用。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"));
    }
}

而我却撞到了墙上。如果我使用mvn测试，我看到（通过docker ps）容器启动了。它开始了两三次（映射在随机端口上，如328xx)，但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testcontainer需要的端口（6161）？如何使用application.properties中的参数？我找不到使用自定义图像与数据库和数据的代码示例。事先谢谢你

[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。我从这里用MySqlContainer尝试了测试（用我的TestMySql）。当我使用干净的MySQL:5.5映像时-一切正常。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，因为已经分配了端口。如果我从脚本中添加数据-它是“Could not create container”。如果我尝试给它我的映像(h2testbase)，同样是“Could not create container”。

Answer 1

看来你这里有两个问题。

>

Docker在一个随机端口上公开mysql server，但您需要一个固定端口。要修复此问题，可以使用GenericContainer的AddFixedExposedPort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";
    }
}

您可能没有数据库test、用户test（密码test作为MySQLContainer中的默认凭据），这会导致您得到的ContainerLaunchException。使用withdatabasename、withusername和withpassword正确配置数据库和用户。

@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"));
    }
}

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

<?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