name: kotlin-testing description: Kotlin testing - JUnit 5, MockK, Kotest, coroutine testing version: "1.0.0" sasmp_version: "1.3.0" bonded_agent: 06-kotlin-testing bond_type: PRIMARY_BOND

execution: timeout_ms: 30000 retry: max_attempts: 3 backoff: exponential initial_delay_ms: 1000

parameters: required: - name: framework type: string validation: "^(junit|mockk|kotest|coroutines|compose)$" optional: - name: style type: string default: "given_when_then"

logging: level: info events: [skill_invoked, framework_loaded, error_occurred]

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"))

        assertThat(result.id).isEqualTo(1)
        verify(exactly = 1) { repository.save(any()) }
    }
}

Coroutine Testing

@Test
fun `loadUser emits states`() = runTest {
    coEvery { repository.getUser(1) } returns Result.success(user)

    viewModel.state.test {
        viewModel.load(1)
        assertThat(awaitItem().isLoading).isTrue()
        advanceUntilIdle()
        assertThat(awaitItem().user).isEqualTo(user)
    }
}

Compose Testing

@Test
fun `button enabled when fields filled`() {
    composeTestRule.setContent { LoginScreen() }
    composeTestRule.onNodeWithTag("email").performTextInput("a@b.com")
    composeTestRule.onNodeWithTag("password").performTextInput("pass")
    composeTestRule.onNodeWithTag("login_button").assertIsEnabled()
}

Troubleshooting

Usage

Skill("kotlin-testing")