Android Test Automation: Unit Test vs Integration Test Seçimi

1class UserValidator {
2fun isValidUsername(username: String): Boolean {
3return username.length >= 3 && username.contains(Regex("^[a-zA-Z0-9]+$"))
4}
5}
6
7// Unit Test
8class UserValidatorTest {
9private lateinit var validator: UserValidator
10
11@Before
12fun setUp() {
13validator = UserValidator()
14}
15
16@Test
17fun testValidUsername() {
18val result = validator.isValidUsername("john123")
19assertTrue(result)
20}
21
22@Test
23fun testInvalidUsername_TooShort() {
24val result = validator.isValidUsername("ab")
25assertFalse(result)
26}
27
28@Test
29fun testInvalidUsername_WithSpecialChar() {
30val result = validator.isValidUsername("john@123")
31assertFalse(result)
32}
33}

1@RunWith(AndroidJUnit4::class)
2class UserRepositoryIntegrationTest {
3@get:Rule
4val instantTaskExecutorRule = InstantTaskExecutorRule()
5
6private lateinit var database: UserDatabase
7private lateinit var repository: UserRepository
8
9@Before
10fun setUp() {
11val context = InstrumentationRegistry.getInstrumentation().targetContext
12database = Room.inMemoryDatabaseBuilder(
13context,
14UserDatabase::class.java
15).build()
16repository = UserRepository(database.userDao())
17}
18
19@Test
20fun testSaveAndRetrieveUser() {
21val user = User(id = 1, name = "john123")
22repository.saveUser(user)
23
24val retrievedUser = repository.getUser(1)
25assertEquals("john123", retrievedUser.name)
26}
27
28@After
29fun tearDown() {
30database.close()
31}
32}