loulanyue Spring Boot Verification Loop
Run before PRs, after major changes, and pre-deploy.
When to Activate
- Before opening a pull request for a Spring Boot service
- After major refactoring or dependency upgrades
- Pre-deployment verification for staging or production
- Running full build → lint → test → security scan pipeline
- Validating test coverage meets thresholds
Phase 1: Build
mvn -T 4 clean verify -DskipTests
# or
./gradlew clean assemble -x test
If build fails, stop and fix.
Phase 2: Static Analysis
Maven (common plugins):
mvn -T 4 spotbugs:check pmd:check checkstyle:check
Gradle (if configured):
./gradlew checkstyleMain pmdMain spotbugsMain
Phase 3: Tests + Coverage
mvn -T 4 test
mvn jacoco:report # verify 80%+ coverage
# or
./gradlew test jacocoTestReport
Report:
- Total tests, passed/failed
- Coverage % (lines/branches)
Unit Tests
Test service logic in isolation with mocked dependencies:
@ExtendWith(MockitoExtension.class)
class UserServiceTest {
@Mock private UserRepository userRepository;
@InjectMocks private UserService userService;
@Test
void createUser_validInput_returnsUser() {
var dto = new CreateUserDto("Alice", "alice@example.com");
var expected = new User(1L, "Alice", "alice@example.com");
when(userRepository.save(any(User.class))).thenReturn(expected);
var result = userService.create(dto);
assertThat(result.name()).isEqualTo("Alice");
verify(userRepository).save(any(User.class));
}
@Test
void createUser_duplicateEmail_throwsException() {
var dto = new CreateUserDto("Alice", "existing@example.com");
when(userRepository.existsByEmail(dto.email())).thenReturn(true);
assertThatThrownBy(() -> userService.create(dto))
.isInstanceOf(DuplicateEmailException.class);
}
}
Integration Tests with Testcontainers
Test against a real database instead of H2:
@SpringBootTest
@Testcontainers
class UserRepositoryIntegrationTest {
@Container
static PostgreSQLContainer<?> postgres = new PostgreSQLContainer<>("postgres:16-alpine")
.withDatabaseName("testdb");
@DynamicPropertySource
static void configureProperties(DynamicPropertyRegistry registry) {
registry.add("spring.datasource.url", postgres::getJdbcUrl);
registry.add("spring.datasource.username", postgres::getUsername);
registry.add("spring.datasource.password", postgres::getPassword);
}
@Autowired private UserRepository userRepository;
@Test
void findByEmail_existingUser_returnsUser() {
userRepository.save(new User("Alice", "alice@example.com"));
var found = userRepository.findByEmail("alice@example.com");
assertThat(found).isPresent();
assertThat(found.get().getName()).isEqualTo("Alice");
}
}
API Tests with MockMvc
Test controller layer with full Spring context:
@WebMvcTest(UserController.class)
class UserControllerTest {
@Autowired private MockMvc mockMvc;
@MockBean private UserService userService;
@Test
void createUser_validInput_returns201() throws Exception {
var user = new UserDto(1L, "Alice", "alice@example.com");
when(userService.create(any())).thenReturn(user);
mockMvc.perform(post("/api/users")
.contentType(MediaType.APPLICATION_JSON)
.content("""
{"name": "Alice", "email": "alice@example.com"}
"""))
.andExpect(status().isCreated())
.andExpect(jsonPath("$.name").value("Alice"));
}
@Test
void createUser_invalidEmail_returns400() throws Exception {
mockMvc.perform(post("/api/users")
.contentType(MediaType.APPLICATION_JSON)
.content("""
{"name": "Alice", "email": "not-an-email"}
"""))
.andExpect(status().isBadRequest());
}
}
Phase 4: Security Scan
# Dependency CVEs
mvn org.owasp:dependency-check-maven:check
# or
./gradlew dependencyCheckAnalyze
# Secrets in source
grep -rn "password\s*=\s*\"" src/ --include="*.java" --include="*.yml" --include="*.properties"
grep -rn "sk-\|api_key\|secret" src/ --include="*.java" --include="*.yml"
# Secrets (git history)
git secrets --scan # if configured
Common Security Findings
# Check for System.out.println (use logger instead)
grep -rn "System\.out\.print" src/main/ --include="*.java"
# Check for raw exception messages in responses
grep -rn "e\.getMessage()" src/main/ --include="*.java"
# Check for wildcard CORS
grep -rn "allowedOrigins.*\*" src/main/ --include="*.java"
Phase 5: Lint/Format (optional gate)
mvn spotless:apply # if using Spotless plugin
./gradlew spotlessApply
Phase 6: Diff Review
git diff --stat
git diff
Checklist:
- No debugging logs left (
System.out,log.debugwithout guards) - Meaningful errors and HTTP statuses
- Transactions and validation present where needed
- Config changes documented
Output Template
VERIFICATION REPORT
===================
Build: [PASS/FAIL]
Static: [PASS/FAIL] (spotbugs/pmd/checkstyle)
Tests: [PASS/FAIL] (X/Y passed, Z% coverage)
Security: [PASS/FAIL] (CVE findings: N)
Diff: [X files changed]
Overall: [READY / NOT READY]
Issues to Fix:
1. ...
2. ...
Continuous Mode
- Re-run phases on significant changes or every 30–60 minutes in long sessions
- Keep a short loop:
mvn -T 4 test+ spotbugs for quick feedback
Remember: Fast feedback beats late surprises. Keep the gate strict—treat warnings as defects in production systems.