Dropwizard 与 Testcontainers 的集成测试

Question

我正在尝试针对 dockered 数据库运行 dropwizard 的集成测试。

Dropwizard

Testcontainers

我试过的:

@ClassRule
public static final PostgreSQLContainer postgres = new PostgreSQLContainer();

@ClassRule
    public final DropwizardAppRule<Configuration> RULE = new DropwizardAppRule<>(
            Application.class,
            CONFIG_PATH,
            ConfigOverride.config("dataSourceFactory.url", postgres.getJdbcUrl()),
            ConfigOverride.config("dataSourceFactory.user", postgres.getUsername()),
            ConfigOverride.config("dataSourceFactory.password", postgres.getPassword())
    );

我收到 Caused by: java.lang.IllegalStateException: Mapped port can only be obtained after the container is started
将这些链接在一起也不起作用

@ClassRule
    public static TestRule chain = RuleChain.outerRule(postgres = new PostgreSQLContainer())
            .around(RULE = new DropwizardAppRule<>(
                    Application.class,
                    CONFIG_PATH,
                    ConfigOverride.config("dataSourceFactory.url", postgres.getJdbcUrl()),
                    ConfigOverride.config("dataSourceFactory.user", postgres.getUsername()),
                    ConfigOverride.config("dataSourceFactory.password", postgres.getPassword())
            ));

最终这有效，但据我所知，它为每个测试运行新的 DropwizardAppRule，这是 不好 ...

@ClassRule
public static final PostgreSQLContainer postgres = new PostgreSQLContainer();

@Rule
    public final DropwizardAppRule<Configuration> RULE = new DropwizardAppRule<>(
            Application.class,
            CONFIG_PATH,
            ConfigOverride.config("dataSourceFactory.url", postgres.getJdbcUrl()),
            ConfigOverride.config("dataSourceFactory.user", postgres.getUsername()),
            ConfigOverride.config("dataSourceFactory.password", postgres.getPassword())
    );

那么如何在创建 DropwizardAppRule 之前链接规则，以便首先启动 PostgreSQLContainer 并启动容器？

Answer 1

通过将 PostgreSQLContainer 作为单例启动来使其工作。

    public static final PostgreSQLContainer postgres = new PostgreSQLContainer();
    static {
        postgres.start();
    }

    @ClassRule
    public final DropwizardAppRule<Configuration> RULE = new DropwizardAppRule<>(
            Application.class,
            CONFIG_PATH,
            ConfigOverride.config("dataSourceFactory.url", postgres.getJdbcUrl()),
            ConfigOverride.config("dataSourceFactory.user", postgres.getUsername()),
            ConfigOverride.config("dataSourceFactory.password", postgres.getPassword())
    );