强制 Spring Boot 覆盖默认配置

Question

我正在尝试实现使用 Testcontainers 作为项目上 IT 测试的替代方案，目前该项目使用 H2 作为测试数据源，问题是无论我尝试什么，我都会无法覆盖这些配置以便使用数据库容器创建自定义数据源，到目前为止我已经尝试过：

1. 直接在 application-testcontainers.yml 文件上设置数据源属性 + @ActiveProfiles("testcontainers") 注释。

    spring:
          datasource:
            url: jdbc:postgresql://localhost:5432/testcontainers
            username: user
            password: 123456

        
        @RunWith(MockitoJUnitRunner.class)
        @ActiveProfiles("testcontainers")
        public final class MyTestClass {
    
        }

3. 创建扩展类以设置数据源属性（覆盖 beforeAll 方法）：

    public class TestcontainersExtension implements BeforeAllCallback, AfterAllCallback {
                        private PostgreSQLContainer<?> container;
                    
                        @Override
                        public void beforeAll(ExtensionContext context) throws Exception {
                            container = new PostgreSQLContainer<>("postgres:9.4")
                                    .withDatabaseName("testcontainers")
                                    .withUsername("user")
                                    .withPassword("123456")
                                    .withExposedPorts(5432);
                    
                            container.start();
                    
                            System.setProperty("spring.datasource.url", container.getJdbcUrl());
                            System.setProperty("spring.datasource.username", container.getUsername());
                            System.setProperty("spring.datasource.password", container.getPassword());
                        }
                    
                        @Override
                        public void afterAll(ExtensionContext context) throws Exception {
                    
                        }
                    }
                
                    @RunWith(MockitoJUnitRunner.class)
                    @ExtendWith(TestcontainersExtension.class)
                    public final class MyTestClass {
                    
                    }

4. 使用 @DynamicPropertySource 方法动态设置配置属性

     @RunWith(MockitoJUnitRunner.class)
        MyTestClass {
    
            @Container
            static PostgreSQLContainer<?> container = 
                    new PostgreSQLContainer<>("postgres:9.4")
                    .withDatabaseName("testcontainers")
                    .withUsername("user")
                    .withPassword("123456")
                    .withExposedPorts(5432);
    
            @DynamicPropertySource
            static void setTestProperties(DynamicPropertyRegistry registry) {
                registry.add("spring.datasource.url", () -> container.getJdbcUrl());
        
                registry.add("spring.datasource.username", () -> container.getUsername());
                registry.add("spring.datasource.password", () -> container.getPassword());
            }
        } 

5. @ContextConfiguration< /strong> + 一个初始值设定项类，还尝试动态设置属性

    @RunWith(MockitoJUnitRunner.class)
    @ContextConfiguration(initializers = {MyTestClass.Initializer.class})
    public final class MyTestClass {
        @Container
        static PostgreSQLContainer<?> container = 
                new PostgreSQLContainer<>("postgres:9.4")
                .withDatabaseName("testcontainers")
                .withUsername("user")
                .withPassword("123456")
                .withExposedPorts(5432);
    
        static class Initializer implements ApplicationContextInitializer<ConfigurableApplicationContext> {
    
            @Override
            public void initialize(ConfigurableApplicationContext applicationContext) {
                TestPropertyValues.of(
                        "spring.datasource.url=" + container.getJdbcUrl(),
                        "spring.datasource.username=" + container.getUsername(),
                        "spring.datasource.password=" + container.getPassword()
                ).applyTo(applicationContext.getEnvironment());
            }
        }
    
    }

以上内容都不适合我，我将不胜感激任何提示或替代方案。