Test fixtures and lifecycle in Kotlin - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a test fixture in Kotlin testing?

A test fixture is the fixed state of a set of objects used as a baseline for running tests. It includes setup data and environment needed before tests run.

beginner

Which Kotlin testing annotation is used to run code before each test method?

The @BeforeEach annotation runs the setup code before each test method to prepare the test environment.

beginner

What is the purpose of the @AfterEach annotation in Kotlin tests?

It runs cleanup code after each test method to reset or release resources used during the test.

intermediate

How does @BeforeAll differ from @BeforeEach in Kotlin testing?

@BeforeAll runs once before all tests in a class, while @BeforeEach runs before each individual test method.

intermediate

Why is it important to use test fixtures and lifecycle methods in automated tests?

They ensure tests run in a consistent environment, avoid side effects between tests, and help isolate failures for easier debugging.

Which annotation in Kotlin runs code before each test method?

A @AfterAll

B @AfterEach

C @BeforeAll

D @BeforeEach

@BeforeEach runs setup code before every test method to prepare the environment.

What does a test fixture typically include?

A Only test method names

B Test data and environment setup

C Test results

D Compiler settings

Test fixtures include the data and environment setup needed before running tests.

Which annotation is used to clean up after each test method?

A @AfterEach

B @BeforeEach

C @BeforeAll

D @AfterAll

@AfterEach runs cleanup code after each test method.

When is @BeforeAll executed in Kotlin tests?

A Once before all tests in a class

B After each test method

C Before each test method

D Once after all tests in a class

@BeforeAll runs once before all tests in the test class.

Why should tests use lifecycle methods like @BeforeEach and @AfterEach?

A To make tests run slower

B To generate test reports

C To ensure consistent test environment and avoid side effects

D To skip tests

Lifecycle methods help keep tests isolated and consistent by setting up and cleaning the environment.

Explain what a test fixture is and why it is important in Kotlin testing.

Think about what you need before running a test to make it reliable.

Describe the difference between @BeforeEach and @BeforeAll annotations in Kotlin testing lifecycle.

Consider how often the setup code runs in each case.