KMMのテストのtips / KMM testing tips

https://teamlab.connpass.com/event/218850/

Transcript

1. ©2021 Wantedly, Inc.
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   2021/07/29
   

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2. ©2021 Wantedly, Inc.
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3. ©2021 Wantedly, Inc.
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4. ©2021 Wantedly, Inc.
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5. ©2021 Wantedly, Inc.
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   https://speakerdeck.com/malvinstn/automated-testing-in-a-kmm-project?slide=6
   

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6. ©2021 Wantedly, Inc.
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7. ©2021 Wantedly, Inc.
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8. ©2021 Wantedly, Inc.
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   // 🙅
   @Rule @JvmField val rule = SomeTestRule()
   // 🙅
   @MockK lateinit var mock: SomeInterface
   @Test fun test() {
   // 🙅
   every { mock.doSomething() } just Runs
   doTest()
   // 🙅
   verify { mock.doSomething() }
   }
   

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9. ©2021 Wantedly, Inc.
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10. ©2021 Wantedly, Inc.
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11. ©2021 Wantedly, Inc.
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    w ΫϦΞ͢ΔίʔυΛຖճॻ͘ͷ͸ਏ͍ʜ
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    class MyTest1 {
    lateinit var db: VisitAppDb
    @BeforeTest fun setup() {
    db = VisitAppDb(testSqlDriver())
    }
    @AfterTest fun tearDown() {
    db.clean()
    }
    }
    class MyTest2 {
    lateinit var db: VisitAppDb
    @BeforeTest fun setup() {
    db = VisitAppDb(testSqlDriver())
    }
    @AfterTest fun tearDown() {
    db.clean()
    }
    }
    class MyTest3 {
    lateinit var db: VisitAppDb
    @BeforeTest fun setup() {
    db = VisitAppDb(testSqlDriver())
    }
    @AfterTest fun tearDown() {
    db.clean()
    }
    }
    class MyTest4… {
    lateinit var db: Visi
    @BeforeTest fun setup
    db = VisitAppDb(t
    }
    @AfterTest fun tearDo
    db.clean()
    }
    }
    

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12. ©2021 Wantedly, Inc.
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    interface TestRule {
    fun onBeforeTest() = Unit
    fun onAfterTest() = Unit
    }
    class TestRules(vararg testRules: TestRule) : List by testRules.toList()
    interface HasTestRules {
    val testRules: TestRules
    @BeforeTest
    fun setupTestRules() {
    testRules.forEach { it.onBeforeTest() }
    }
    @AfterTest
    fun tearDownTestRules() {
    testRules.forEach { it.onAfterTest() }
    }
    }
    

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13. ©2021 Wantedly, Inc.
    5FTU3VMF࣮૷
    interface TestRule {
    fun onBeforeTest() = Unit
    fun onAfterTest() = Unit
    }
    class TestRules(vararg testRules: TestRule) : List by testRules.toList()
    interface HasTestRules {
    val testRules: TestRules
    @BeforeTest
    fun setupTestRules() {
    testRules.forEach { it.onBeforeTest() }
    }
    @AfterTest
    fun tearDownTestRules() {
    testRules.forEach { it.onAfterTest() }
    }
    }
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14. ©2021 Wantedly, Inc.
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    interface TestRule {
    fun onBeforeTest() = Unit
    fun onAfterTest() = Unit
    }
    class TestRules(vararg testRules: TestRule) : List by testRules.toList()
    interface HasTestRules {
    val testRules: TestRules
    @BeforeTest
    fun setupTestRules() {
    testRules.forEach { it.onBeforeTest() }
    }
    @AfterTest
    fun tearDownTestRules() {
    testRules.forEach { it.onAfterTest() }
    }
    }
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15. ©2021 Wantedly, Inc.
    5FTU3VMF࣮૷
    class DbTestRule : TestRule {
    private lateinit var sqlDriver: SqlDriver
    lateinit var db: VisitAppDb
    private set
    override fun onBeforeTest() {
    sqlDriver = testSqlDriver()
    db = VisitAppDb(driver = sqlDriver)
    }
    override fun onAfterTest() {
    sqlDriver.close()
    }
    }
    class MyTest : HasTestRules {
    val dbTestRule = DbTestRule()
    override val testRules = TestRules(dbTestRule)
    @Test
    fun test() {
    dbTestRule.db.userQueries.insertOrReplace(User())
    val all = dbTestRule.db.userQueries.selectAll().executeAsList()
    assertEquals(1, all.size)
    }
    }
    

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16. ©2021 Wantedly, Inc.
    5FTU3VMF࣮૷
    class DbTestRule : TestRule {
    private lateinit var sqlDriver: SqlDriver
    lateinit var db: VisitAppDb
    private set
    override fun onBeforeTest() {
    sqlDriver = testSqlDriver()
    db = VisitAppDb(driver = sqlDriver)
    }
    override fun onAfterTest() {
    sqlDriver.close()
    }
    }
    class MyTest : HasTestRules {
    val dbTestRule = DbTestRule()
    override val testRules = TestRules(dbTestRule)
    @Test
    fun test() {
    dbTestRule.db.userQueries.insertOrReplace(User())
    val all = dbTestRule.db.userQueries.selectAll().executeAsList()
    assertEquals(1, all.size)
    }
    }
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17. ©2021 Wantedly, Inc.
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    class DbTestRule : TestRule {
    private lateinit var sqlDriver: SqlDriver
    lateinit var db: VisitAppDb
    private set
    override fun onBeforeTest() {
    sqlDriver = testSqlDriver()
    db = VisitAppDb(driver = sqlDriver)
    }
    override fun onAfterTest() {
    sqlDriver.close()
    }
    }
    class MyTest : HasTestRules {
    val dbTestRule = DbTestRule()
    override val testRules = TestRules(dbTestRule)
    @Test
    fun test() {
    dbTestRule.db.userQueries.insertOrReplace(User())
    val all = dbTestRule.db.userQueries.selectAll().executeAsList()
    assertEquals(1, all.size)
    }
    }
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18. ©2021 Wantedly, Inc.
    5FTU3VMF࣮૷
    class DbTestRule : TestRule {
    private lateinit var sqlDriver: SqlDriver
    lateinit var db: VisitAppDb
    private set
    override fun onBeforeTest() {
    sqlDriver = testSqlDriver()
    db = VisitAppDb(driver = sqlDriver)
    }
    override fun onAfterTest() {
    sqlDriver.close()
    }
    }
    class MyTest : HasTestRules {
    val dbTestRule = DbTestRule()
    override val testRules = TestRules(dbTestRule)
    @Test
    fun test() {
    dbTestRule.db.userQueries.insertOrReplace(User())
    val all = dbTestRule.db.userQueries.selectAll().executeAsList()
    assertEquals(1, all.size)
    }
    }
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19. ©2021 Wantedly, Inc.
    5FTU3VMF࣮૷
    class DbTestRule : TestRule {
    private lateinit var sqlDriver: SqlDriver
    lateinit var db: VisitAppDb
    private set
    override fun onBeforeTest() {
    sqlDriver = testSqlDriver()
    db = VisitAppDb(driver = sqlDriver)
    }
    override fun onAfterTest() {
    sqlDriver.close()
    }
    }
    class MyTest : HasTestRules {
    val dbTestRule = DbTestRule()
    override val testRules = TestRules(dbTestRule)
    @Test
    fun test() {
    dbTestRule.db.userQueries.insertOrReplace(User(userId = 1, name = "Foo"))
    val all = dbTestRule.db.userQueries.selectAll().executeAsList()
    assertEquals(1, all.size)
    }
    }
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20. ©2021 Wantedly, Inc.
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21. ©2021 Wantedly, Inc.
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22. ©2021 Wantedly, Inc.
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23. ©2021 Wantedly, Inc.
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    class ApiClient {
    fun createUser(): User {
    // ࣮ࡍ͸௨৴͢Δ
    return User(…)
    }
    }
    class UserRepository {
    fun create(): User {
    return ApiClient().createUser()
    }
    }
    

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24. ©2021 Wantedly, Inc.
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    class ApiClient {
    fun createUser(): User {
    // ࣮ࡍ͸௨৴͢Δ
    return User(…)
    }
    }
    class UserRepository {
    fun create(): User {
    return ApiClient().createUser()
    }
    }
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25. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val user = UserRepository().create()
    // ௨৴݁Ռ͕Θ͔Βͳ͍ͷͰςετͰ͖ͳ͍
    // ௨৴ࣦഊͨ͠ΒͲ͏ͳΔʁ
    }
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26. ©2021 Wantedly, Inc.
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    interface ApiClient {
    fun createUser(): User
    }
    class ApiClientImpl : ApiClient {
    override fun createUser(): User {
    // ࣮ࡍ͸௨৴͢Δ
    return User()
    }
    }
    class UserRepository(private val apiClient: ApiClient) {
    fun create(): User {
    return apiClient.createUser()
    }
    }
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27. ©2021 Wantedly, Inc.
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    interface ApiClient {
    fun createUser(): User
    }
    class ApiClientImpl : ApiClient {
    override fun createUser(): User {
    // ࣮ࡍ͸௨৴͢Δ
    return User()
    }
    }
    class UserRepository(private val apiClient: ApiClient) {
    fun create(): User {
    return apiClient.createUser()
    }
    }
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28. ©2021 Wantedly, Inc.
    ςελϒϧͳઃܭ
    interface ApiClient {
    fun createUser(): User
    }
    class ApiClientImpl : ApiClient {
    override fun createUser(): User {
    // ࣮ࡍ͸௨৴͢Δ
    return User()
    }
    }
    class UserRepository(private val apiClient: ApiClient) {
    fun create(): User {
    return apiClient.createUser()
    }
    }
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29. ©2021 Wantedly, Inc.
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    class ApiClientMock : ApiClient {
    lateinit var mock: () -> User
    override fun createUser() = mock()
    }
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30. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val apiClient = ApiClientMock()
    apiClient.mock = { User("test") }
    val user = UserRepository(apiClient).create()
    assertEquals("test", user.id)
    }
    @Test
    fun testFailed() {
    val apiClient = ApiClientMock()
    apiClient.mock = { throw ExpectedException() }
    try {
    UserRepository(apiClient).create()
    fail()
    } catch (e: ExpectedException) {
    // Expected
    }
    }
    ςελϒϧͳઃܭ
    

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31. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val apiClient = ApiClientMock()
    apiClient.mock = { User("test") }
    val user = UserRepository(apiClient).create()
    assertEquals("test", user.id)
    }
    @Test
    fun testFailed() {
    val apiClient = ApiClientMock()
    apiClient.mock = { throw ExpectedException() }
    try {
    UserRepository(apiClient).create()
    fail()
    } catch (e: ExpectedException) {
    // Expected
    }
    }
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32. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val apiClient = ApiClientMock()
    apiClient.mock = { User("test") }
    val user = UserRepository(apiClient).create()
    assertEquals("test", user.id)
    }
    @Test
    fun testFailed() {
    val apiClient = ApiClientMock()
    apiClient.mock = { throw ExpectedException() }
    try {
    UserRepository(apiClient).create()
    fail()
    } catch (e: ExpectedException) {
    // Expected
    }
    }
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33. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val apiClient = ApiClientMock()
    apiClient.mock = { User("test") }
    val user = UserRepository(apiClient).create()
    assertEquals("test", user.id)
    }
    @Test
    fun testFailed() {
    val apiClient = ApiClientMock()
    apiClient.mock = { throw ExpectedException() }
    try {
    UserRepository(apiClient).create()
    fail()
    } catch (e: ExpectedException) {
    // Expected
    }
    }
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34. ©2021 Wantedly, Inc.
    @Test
    fun test() {
    val apiClient = ApiClientMock()
    apiClient.mock = { User("test") }
    val user = UserRepository(apiClient).create()
    assertEquals("test", user.id)
    }
    @Test
    fun testFailed() {
    val apiClient = ApiClientMock()
    apiClient.mock = { throw ExpectedException() }
    try {
    UserRepository(apiClient).create()
    fail()
    } catch (e: ExpectedException) {
    // Expected
    }
    }
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35. ©2021 Wantedly, Inc.
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36. ©2021 Wantedly, Inc.
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