Android Testing

Discover testing for Android Development

Transcript

1. Android Testing
2. About me • Nguyen Truong Giang • Senior Android Engineer / Android Leader @ tiki.vn • Skype: gianguitpp • Email: giangnguyen.tale@gmail.com • https://github.com/talenguyen
3. Content • Why test? • Types of tests • When to use? • Practice
4. Why test?
5. • Automation of manual work • Write testable code make a highly modular code
6. Types of tests
7. Test Pyramid https://martinfowler.com/bliki/TestPyramid.html
8. JVM
9. JVM Device
10. JVM Device JVM Unit Test
 (Fastest - Pure Logic)
11. JVM Device Instrumentation Unit Test
 (Logic with Context) JVM Unit Test
 (Fastest - Pure Logic) /test /androidTest
12. JVM Device Instrumentation Unit Test
 (Logic with Context) Instrumentation UI Test JVM Unit Test
 (Fastest - Pure Logic) Non-UI UI /test /androidTest
13. Unit test • Verify simple logic • Functions, methods or entire class • Independent
14. class ValidatorKtTest { @Test fun emailAddress() { assertThat(isEmailAddress("foo@tiki.vn")).isTrue() } @Test fun notEmailAddress() { assertThat(isEmailAddress("foo@tiki")).isFalse() } }
15. Integration test • Verify how units interact with each other • Has dependencies • Mock & verify
16. @Test fun `login success then save token to LocalStorage`() { // Setup val mockedApiServices = mock<ApiServices>() val mockedLocalStorage = mock<LocalStorage>() val tested = UserRepository(InstantAppExecutors(), mockedApiServices, mockedLocalStorage) // given val token = "token" `when`(mockedApiServices.login(anyString(), anyString())) .thenReturn(just(ApiResponse.create(Response.success(token)))) // when tested.login("foo@tiki.vn", "bar") .observeForever(mock()) // then verify(mockedLocalStorage).setAccessToken(token) }
17. UI (end to end) test • Verify whole system work • User interacts with UI components
18. @Test fun invalidEmail() { // Input invalid email onView(withId(R.id.etUsername)) .perform(replaceText("giang"), closeSoftKeyboard()) // Verify invalid email message is shown onView(withId(R.id.tilUsername)) .check(matches(hasError(R.string.email_is_invalid))) // Verify submit button is disable onView(withId(R.id.btSubmit)) .check(matches(Matchers.not(isEnabled()))) }
19. When to use?
20. • Unit test for simple logic • Integration test to verify business logic • UI test for the rest
21. Practice
22. • https://github.com/tikivn/AndroidTesting • Unit test: Validator • Integration test: UseRepository • get “access-token” from LocalStorage • login success then save “access-token” to LocalStorage
23. • UI test: LoginFragment • test invalid email • test valid email • test login error
24. Thank you
25. We’re hiring • Send CV to giangnguyen.tale@gmail.com or careers@tiki.vn • https://tuyendung.tiki.vn
26. References • https://developer.android.com/training/testing/ • https://www.linkedin.com/learning/effective-android- testing-for-mobile-developers • https://martinfowler.com/articles/practical-test- pyramid.html • https://academy.realm.io/posts/kau-jake-wharton-testing- robots/