UI Testing on Android

Transcript

1. UI Testing on Android
   Mustafa Berkay Mutlu
   August 2nd 2017
   

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2. Android Testing Support Library
   ● Espresso
   ○ Concise, beautiful, and reliable Android UI tests
   ● Android JUnit Runner
   ○ JUnit4 support
   ○ Activity and Application life-cycle monitoring
   ○ Intent Monitoring and Stubbing
   ● JUnit4 Rules
   ○ More flexibility and reduced boilerplate code required in tests
   ● UI Automator
   ○ Cross-app functional UI testing across system and installed apps
   

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3. Anatomy of a UI Test
   1. Find a view
   2. Perform an action
   3. Inspect the result
   

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5. Espresso Framework
   Concise, beautiful, and reliable Android UI tests.
   The core API is small, predictable, and easy to
   learn and yet remains open for customization.
   @Test
   public void greeterSaysHello() {
   onView(withId( R.id.name_field))
   .perform(typeText( "Steve"));
   onView(withId( R.id.greet_button))
   .perform(click());
   onView(withText( "Hello Steve!" ))
   .check(matches(isDisplayed()));
   }
   

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6. Anatomy of a UI Test
   1. Find a view
   2. Perform an action
   3. Inspect the result
   onView(Matcher )
   .perform(ViewAction)
   .check(ViewAssertion );
   

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7. View Matchers
   

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8. View Actions
   

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9. View Assertions
   

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10. Espresso Test Recorder
    Lets you create UI tests for your app
    without writing any test code.
    

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11. Demo
    Let’s try Espresso Test Recorder and write some tests.
    

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12. Idling Resources
    Espresso detects when the main thread is idle.
    But it doesn’t know anything about other threads.
    Use Idling Resources to inform Espresso of the app’s idle/busy state.
    You can implement the IdlingResource interface yourself or use an
    already-existing implementation, such as CountingIdlingResource.
    

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13. Idling Resources
    Dependency note from Android docs:
    dependencies {
    ….
    // The following Espresso dependency can be either "compile"
    // or "androidTestCompile", depending on your app's implementation
    androidTestCompile 'com.android.support.test.espresso:espresso-idling-resource:3.0.0'
    }
    

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14. Firebase Test Lab for Android
    Test your app on devices hosted in a
    Google data center.
    Test results (logs, videos, and
    screenshots) are made available in the
    Firebase console.
    Free for 10 virtual device and 5 physical
    device executions daily.
    

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15. Thank You
    

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