Kotlin Testing Skill

Comprehensive testing with JUnit 5, MockK, and coroutine testing.

Topics Covered

MockK

class UserServiceTest {
    private val repository: UserRepository = mockk()
    private val service = UserService(repository)

    @Test
    fun `createUser saves and returns`() {
        every { repository.save(any()) } returns User(1, "test@test.com")

        val result = service.create(CreateUserRequest("test@test.com"))