Quality Control & Assurance Flashcards

Which tool integrated with Spring Boot Actuator provides health checks that can be used for quality assurance in production?

Answer: Spring Actuator HealthIndicator

Spring Boot Actuator's HealthIndicator interface allows components to report their health status via the /actuator/health endpoint.

What is the role of Testcontainers when used with Spring Boot tests?

Answer: Starts real Docker containers (e.g., databases) during integration tests

Testcontainers starts and manages real Docker containers for services like PostgreSQL or Redis during integration test execution.

In Spring, which annotation marks a method to run before each test method in a JUnit 5 test class?

Answer: @BeforeEach

JUnit 5 uses @BeforeEach (not JUnit 4's @Before) to annotate setup methods that run before each individual test.

Which Spring framework feature allows you to verify that a method was called on a @MockBean a specific number of times?

Answer: Verify API from Mockito via Mockito.verify()

Mockito.verify() combined with times() allows assertions on how many times a method was called on a mock or spy bean.

What does the @Transactional annotation do when applied to a Spring test method?

Answer: Rolls back the transaction after each test by default

When @Transactional is applied to a Spring test, the transaction is rolled back after each test method by default, keeping the database clean.

Which Spring Boot Actuator metric can help QA teams detect slow database queries in production?

Answer: spring.datasource.hikari.pending-threads

The HikariCP metric for pending threads indicates connection pool exhaustion, which can signal slow queries blocking other requests.

What is the purpose of the @ParameterizedTest annotation in JUnit 5 when writing Spring tests?

Answer: Runs the same test method multiple times with different input values

@ParameterizedTest enables running the same test with multiple data sets, improving coverage without duplicating test methods.