ClassTestAndroid.java

  public class TestAndroidCalculator {

	private static CalculatorScreen calculatorScreen;
	private static AppiumDriver<MobileElement> appiumDriver;

	@BeforeClass
	public static void setup() throws MalformedURLException {
	  DesiredCapabilities capabilities = new DesiredCapabilities();
	  capabilities.setCapability("app",new File("apps/app-android-calculator.apk"));
	  capabilities.setCapability("platformName","Android" );
	  capabilities.setCapability("deviceName","Android Emulator API 22");
	  capabilities.setCapability("unicodeKeyboard", true);
	  capabilities.setCapability("disableAndroidWatchers" , true);
	  appiumDriver = new AndroidDriver<MobileElement>(new URL("http://localhost:4723/wd/hub") , capabilities);
	  calculatorScreen = new CalculatorScreen(appiumDriver);
	}

	@Test
	public void shouldSum() {
	  calculatorScreen.fillFirstNumber("10").fillSecondNumber("10").buttonSum.click();
	  assertTrue(calculatorScreen.operationResult().equals("20"));
	}

	@AfterClass
	  public static void teardown() {
	  calculatorScreen.quitDriver();
	}
}