شروع با تست اندروید: ساخت برنامه های قابل اعتماد با اطمینان

@Composable
fun Login(onSuccess: (email: Email) -> Unit, viewModel: LoginViewModel = hiltViewModel()) {

  LaunchedEffect(key1 = viewModel.loginState, block = {
    if (viewModel.loginState == LoginState.LoginSuccess) onSuccess(viewModel.email)
  })

  Column {
    Text(text = stringResource(id = R.string.login))

    EmailInput(modifier = Modifier
      .semantics { testTagsAsResourceId = true;testTag = "emailInput" }
      .testTag("emailInput")
      .fillMaxWidth(),
      value = viewModel.email.value ?: "",
      isEnabled = viewModel.loginState !== LoginState.InProgress,
      onValueChange = viewModel::updateEmail)

    PasswordInput(modifier = Modifier
      .semantics { testTagsAsResourceId = true;testTag = "passwordInput" }
      .fillMaxWidth(),
      value = viewModel.password.value ?: "",
      isEnabled = viewModel.loginState !== LoginState.InProgress,
      onValueChange = viewModel::updatePassword)

    if (viewModel.loginState === LoginState.LoginPending){
        PrimaryButton(modifier = Modifier
            .semantics { testTagsAsResourceId = true;testTag = "loginButton" }
            .fillMaxWidth(),
            text = stringResource(id = R.string.login),
            enabled = viewModel.isLoginButtonEnabled,
            onClick = viewModel::login)
    }

    if (viewModel.loginState === LoginState.InProgress){
        CircularProgressIndicator(
            modifier = Modifier
                .semantics { testTagsAsResourceId = true;testTag = "progressLoader" }
                .align(Alignment.CenterHorizontally)
        )
    }
  }
}

@RunWith(RobolectricTestRunner::class)
class LoginKtTest {

  @get:Rule
  val composeRule = createComposeRule()

  @get:Rule
  var mainCoroutineRule = MainCoroutineRule()

  @Test
  fun shouldEnableButtonOnlyWhenInputsAreValid() {
    with(composeRule) {
      val loginUseCase = mockk()
      val loginViewModel = LoginViewModel(loginUseCase)
      setContent { Login(onSuccess = {}, viewModel = loginViewModel) }
      onNodeWithTag("loginButton").assertIsNotEnabled()

      onNodeWithTag("emailInput").performTextInput("abcd")
      onNodeWithTag("loginButton").assertIsNotEnabled()

      onNodeWithTag("emailInput").performTextInput("abcd@gmail.com")
      onNodeWithTag("loginButton").assertIsNotEnabled()

      onNodeWithTag("passwordInput").performTextInput("12")
      onNodeWithTag("loginButton").assertIsNotEnabled()

      onNodeWithTag("passwordInput").performTextInput("12345")
      onNodeWithTag("loginButton").assertIsEnabled()
    }
  }
}

// Allows us to create and configure mock objects, stub methods, verify method invocations, and more
androidTestImplementation("io.mockk:mockk-agent:1.13.5")
androidTestImplementation("io.mockk:mockk-android:1.13.5")
androidTestImplementation("org.mockito.kotlin:mockito-kotlin:5.4.0")

// Assertion library
androidTestImplementation("com.google.truth:truth:1.1.4")

// Needed for createComposeRule , createAndroidComposeRule and other rules used to perform UI test
testImplementation("androidx.compose.ui:ui-test-junit4:$compose_version") // used with robolectric to run ui test on jvm
androidTestImplementation("androidx.compose.ui:ui-test-junit4:$compose_version") // used with AndroidTestRunner to run ui test on virtual/physical device.

// Needed for createComposeRule(), but not for createAndroidComposeRule():
debugImplementation("androidx.compose.ui:ui-test-manifest:$compose_version")

// Dependency injection for For instrumented tests on JVM
testImplementation("com.google.dagger:hilt-android-testing:2.49")
kaptTest("com.google.dagger:hilt-compiler:2.49")

// Needed to run android UI test on JVM instead of on an emulator or device
testImplementation("org.robolectric:robolectric:4.10.3)

// Helper for other arch dependencies, including JUnit test rules that can be used with LiveData, coroutines etc
testImplementation("androidx.arch.core:core-testing:2.2.0")

testOptions {
        unitTests {
            // Enables unit tests to use Android resources, assets, and manifests.
            isIncludeAndroidResources = true
            // Whether unmocked methods from android.jar should throw exceptions or return default values (i.e. zero or null).
            isReturnDefaultValues = true
        }
}

./gradlew testDebugUnitTest