added UIAutomator2 rotation test

src/test/java/io/appium/java_client/android/UIAutomator2Test.java

@@ -0,0 +1,77 @@
+package io.appium.java_client.android;
+
+import io.appium.java_client.remote.AutomationName;
+import io.appium.java_client.remote.MobileCapabilityType;
+import io.appium.java_client.service.local.AppiumDriverLocalService;
+import io.appium.java_client.service.local.AppiumServerHasNotBeenStartedLocallyException;
+import org.junit.After;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+import org.openqa.selenium.DeviceRotation;
+import org.openqa.selenium.remote.DesiredCapabilities;
+
+import java.io.File;
+
+import static org.junit.Assert.assertEquals;
+
+public class UIAutomator2Test {
+    private static AppiumDriverLocalService service;
+    protected static AndroidDriver<AndroidElement> driver;
+
+    /**
+     * initialization.
+     */
+    @BeforeClass public static void beforeClass() throws Exception {
+        service = AppiumDriverLocalService.buildDefaultService();
+        service.start();
+
+        if (service == null || !service.isRunning()) {
+            throw new AppiumServerHasNotBeenStartedLocallyException
+                ("An appium server node is not started!");
+        }
+
+        File appDir = new File("src/test/java/io/appium/java_client");
+        File app = new File(appDir, "ApiDemos-debug.apk");
+        DesiredCapabilities capabilities = new DesiredCapabilities();
+        capabilities.setCapability(MobileCapabilityType.DEVICE_NAME, "Android Emulator");
+        capabilities.setCapability(MobileCapabilityType.APP, app.getAbsolutePath());
+        capabilities.setCapability(MobileCapabilityType.AUTOMATION_NAME, AutomationName.ANDROID_UIAUTOMATOR2);
+        driver = new AndroidDriver<>(service.getUrl(), capabilities);
+    }
+
+    /**
+     * finishing.
+     */
+    @AfterClass public static void afterClass() {
+        if (driver != null) {
+            driver.quit();
+        }
+        if (service != null) {
+            service.stop();
+        }
+    }
+
+
+    @After public void afterMethod() {
+        driver.rotate(new DeviceRotation(0, 0, 0));
+    }
+
+    @Test public void testLandscapeRightRotation() {
+        DeviceRotation landscapeRightRotation = new DeviceRotation(0, 0, 90);
+        driver.rotate(landscapeRightRotation);
+        assertEquals(driver.rotation(), landscapeRightRotation);
+    }
+
+    @Test public void testLandscapeLeftRotation() {
+        DeviceRotation landscapeLeftRotation = new DeviceRotation(0, 0, 270);
+        driver.rotate(landscapeLeftRotation);
+        assertEquals(driver.rotation(), landscapeLeftRotation);
+    }
+
+    @Test public void testPortraitUpsideDown() {
+        DeviceRotation landscapeRightRotation = new DeviceRotation(0, 0, 180);
+        driver.rotate(landscapeRightRotation);
+        assertEquals(driver.rotation(), landscapeRightRotation);
+    }
+}