Summer Test

Summer Test — Containers, WireMock & Blackbox

Gate: Verify summer-core loaded and io.f8a.summer:summer-platform in build.gradle.

Module: summer-test | Dependency: testImplementation 'io.f8a.summer:summer-test'

PostgresTestContainer

@Testcontainers
class UserServiceIntegrationTest {

    @Container
    static PostgresTestContainer postgres = PostgresTestContainer.create()
        .withDatabaseName("testdb")
        .withUsername("testuser")
        .withPassword("testpass");

    @DynamicPropertySource
    static void configureProperties(DynamicPropertyRegistry registry) {
        registry.add("spring.r2dbc.url", postgres::getR2dbcUrl);
        registry.add("spring.r2dbc.username", postgres::getUsername);
        registry.add("spring.r2dbc.password", postgres::getPassword);
        registry.add("spring.flyway.url", postgres::getJdbcUrl);
        registry.add("spring.flyway.user", postgres::getUsername);
        registry.add("spring.flyway.password", postgres::getPassword);
    }

    @BeforeAll
    static void setup() {
        postgres.runFlywayMigrations("classpath:db/migration");
    }
}

Methods: getJdbcUrl(), getR2dbcUrl(), getUsername(), getPassword(), runFlywayMigrations(path), executeSqlScript(path), createConnection(). DB assertion utils (tableExists, getTableRowCount, executeUpdate, queryForString) → references/blackbox-config.md DatabaseTestUtils.

WireMockServiceManager

WireMockServiceManager wm = new WireMockServiceManager();
wm.startService("payment-service", 8081, "src/test/resources/blackbox/stubs/payment-service");
// ... tests ...
wm.stopAllServices();

Blackbox Testing

Directory structure:

src/test/resources/blackbox/
├── blackbox_config.json      # Main config
├── stubs_config.json         # Stub-only config
├── stubs/                    # WireMock stubs per service
│   └── <service>/mappings/   # Request mappings
│   └── <service>/__files/    # Response templates
└── test-cases/               # Test case JSONs

Test Implementation

@SpringBootTest(webEnvironment = RANDOM_PORT)
@TestMethodOrder(OrderAnnotation.class)
public class UserServiceBlackboxTest {
    private static WireMockServiceManager serviceManager;

    @BeforeAll
    static void setUpAll() throws Exception {
        var config = BlackboxTestUtils.loadConfiguration("src/test/resources/blackbox/blackbox_config.json");
        serviceManager = new WireMockServiceManager();
        config.getStubs().getServices().stream()
            .filter(ServiceConfig::isEnabled)
            .forEach(s -> serviceManager.startService(s.getName(), s.getPort(), s.getStubsDataPath()));
    }

    @TestFactory
    Stream<DynamicTest> crudOperations() {
        return TestCaseUtils.loadTestCases("src/test/resources/blackbox/test-cases/user-service/crud-operations.json")
            .stream()
            .map(tc -> DynamicTest.dynamicTest(tc.getName(), () -> executeTestCase(tc)));
    }

    @AfterAll
    static void tearDown() { serviceManager.stopAllServices(); }
}

Standalone Stub Runner

WireMockServiceManager sm = new WireMockServiceManager();
var config = StubConfigurationUtils.loadStubsConfiguration("src/test/resources/blackbox/stubs_config.json");
StubConfigurationUtils.startAllStubServices(sm, config);

Gradle task: ./gradlew runStubs

Test Authentication (@AuthRoles-Protected Endpoints)

Construct a mock X-Userinfo header for blackbox tests against APISIX-secured endpoints:

String userInfo = Base64.getEncoder().encodeToString(
    """{"sub":"test-user","preferred_username":"test","realm_access":{"roles":["user"]}}""".getBytes()
);
webTestClient.get().uri("/api/resource")
    .header("X-Userinfo", userInfo)
    .exchange()
    .expectStatus().isOk();

RANDOM_PORT vs DEFINED_PORT

RANDOM_PORT binds to ephemeral port. base_url in blackbox_config.json only hardcodes 8080 when using DEFINED_PORT. With RANDOM_PORT, inject via @LocalServerPort and build URL dynamically.

Full config JSON format + test-case JSON schema → references/blackbox-config.md.

Rules

• PostgresTestContainer.create() for integration tests — never hardcode JDBC/R2DBC URLs
• @DynamicPropertySource to wire container URLs — never static config files for test DB
• RANDOM_PORT + @LocalServerPort — never hardcode port 8080 in test config
• Always call stopAllServices() in @AfterAll — port leaks break CI
• TestCaseUtils.loadTestCases() for blackbox tests — enables JSON-driven test data

Related Skills

• summer-core — Shared types (Member, ViewableException) used in test assertions
• summer-security — @AuthRoles testing with mock X-Userinfo header
• testing-workflow — General testing patterns, StepVerifier, WebTestClient
• database-patterns — R2DBC test patterns, Flyway migration testing