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Android Testing

new-silvermoon/android-testing

Comprehensive testing strategy involving Unit, Integration, Hilt, and Screenshot tests.

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on the repository, not the skill itself

Install

one command, takes just this skill from the repository 
npx skills add https://github.com/new-silvermoon/awesome-android-agent-skills --skill android-testing

The instruction itself

8 sections, as written by the author

Android Testing Strategies

This skill provides expert guidance on testing modern Android applications, inspired by "Now in Android". It covers Unit Tests, Hilt Integration Tests, and Screenshot Testing.

Testing Pyramid

  • Unit Tests: Fast, isolate logic (ViewModels, Repositories).
  • Integration Tests: Test interactions (Room DAOs, Retrofit vs MockWebServer).
  • UI/Screenshot Tests: Verify UI correctness (Compose).

Dependencies (libs.versions.toml)

Ensure you have the right testing dependencies.

[libraries]
junit4 = { module = "junit:junit", version = "4.13.2" }
kotlinx-coroutines-test = { group = "org.jetbrains.kotlinx", name = "kotlinx-coroutines-test", version.ref = "kotlinxCoroutines" }
androidx-test-ext-junit = { group = "androidx.test.ext", name = "junit", version = "1.1.5" }
espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version = "3.5.1" }
compose-ui-test = { group = "androidx.compose.ui", name = "ui-test-junit4" }
hilt-android-testing = { group = "com.google.dagger", name = "hilt-android-testing", version.ref = "hilt" }
roborazzi = { group = "io.github.takahirom.roborazzi", name = "roborazzi", version.ref = "roborazzi" }

Screenshot Testing with Roborazzi

Screenshot tests ensure your UI doesn't regress visually. NiA uses Roborazzi because it runs on the JVM (fast) without needing an emulator.

Setup

  • Add the plugin to libs.versions.toml:
    [plugins]
    roborazzi = { id = "io.github.takahirom.roborazzi", version.ref = "roborazzi" }
  • Apply it in your module's build.gradle.kts:
    plugins {
        alias(libs.plugins.roborazzi)
    }

Writing a Screenshot Test

@RunWith(AndroidJUnit4::class)
@GraphicsMode(GraphicsMode.Mode.NATIVE)
@Config(sdk = [33], qualifiers = RobolectricDeviceQualifiers.Pixel5)
class MyScreenScreenshotTest {

    @get:Rule
    val composeTestRule = createAndroidComposeRule<ComponentActivity>()

    @Test
    fun captureMyScreen() {
        composeTestRule.setContent {
            MyTheme {
                MyScreen()
            }
        }

        composeTestRule.onRoot()
            .captureRoboImage()
    }
}

Hilt Testing

Use HiltAndroidRule to inject dependencies in tests.

@HiltAndroidTest
class MyDaoTest {

    @get:Rule
    var hiltRule = HiltAndroidRule(this)

    @Inject
    lateinit var database: MyDatabase
    private lateinit var dao: MyDao

    @Before
    fun init() {
        hiltRule.inject()
        dao = database.myDao()
    }
    
    // ... tests
}

Running Tests

  • Unit: ./gradlew test
  • Screenshots: ./gradlew recordRoborazziDebug (to record) / ./gradlew verifyRoborazziDebug (to verify)

Repackaged in 1 other repositories

same content, different owner
livekit/client-sdk-android open on GitHub →

How to use it

Copy the folder

Take new-silvermoon/android-testing from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.