SpringBoot @Nested classes with nested @DynamicPropertySource get called in order, but don't get applied

It seems that @Nested and @DynamicPropertySource do not play together when both outer and inner classes have a source defined. Neither @DirtiesContext nor inheriting / overwritting seems to do the trick, (overwritting expects a full setup, while inheriting has the methods called in proper order but they don't seem to get applied).

I've added a manual test to the existing test class that should fail as I'd expect "1" to be the host but it is not.

SpringJUnitConfig
class DynamicPropertySourceNestedTests {

    private static final String TEST_CONTAINER_IP = "DynamicPropertySourceNestedTests.test.container.ip";

    private static final String TEST_CONTAINER_PORT = "DynamicPropertySourceNestedTests.test.container.port";

    static DemoContainer container = new DemoContainer();

    @DynamicPropertySource
    static void containerProperties(DynamicPropertyRegistry registry) {
        registry.add(TEST_CONTAINER_IP, container::getIpAddress);
        registry.add(TEST_CONTAINER_PORT, container::getPort);
    }

    private static void assertServiceHasInjectedValues(Service service) {
        assertThat(service.getIp()).isEqualTo("127.0.0.1");
        assertThat(service.getPort()).isEqualTo(4242);
    }

    @Test
    @DisplayName("@Service has values injected from @DynamicPropertySource")
    void serviceHasInjectedValues(@Autowired Service service) {
        assertServiceHasInjectedValues(service);
    }

    @Nested
    class Testing {
        @DynamicPropertySource
        static void containerProperties(DynamicPropertyRegistry registry) {
            registry.add(TEST_CONTAINER_IP, () -> "1"); // even though it is called after outer dynamic properties it does not get applied
            registry.add(TEST_CONTAINER_PORT, container::getPort);
        }

        @Test
        void serviceHasInjectedValues(@Autowired Service service) {
            assertServiceHasInjectedValues(service);
        }
    }

    @Configuration
    @Import(Service.class)
    static class Config {
    }

    static class Service {

        private final String ip;

        private final int port;


        Service(@Value("${" + TEST_CONTAINER_IP + ":10.0.0.1}") String ip, @Value("${" + TEST_CONTAINER_PORT + ":-999}") int port) {
            this.ip = ip;
            this.port = port;
        }

        String getIp() {
            return this.ip;
        }

        int getPort() {
            return this.port;
        }
    }

    static class DemoContainer {

        String getIpAddress() {
            return "127.0.0.1";
        }

        int getPort() {
            return 4242;
        }
    }
}

Comment From: quaff

It's belong to spring-framework not spring-boot, I've created https://github.com/spring-projects/spring-framework/pull/31083 to fix it.

Comment From: bclozel

Superseded by https://github.com/spring-projects/spring-framework/pull/31083