no need for espresso, uiAutomator works fast enough

AndroidE2E/app/src/androidTest/java/com/reactnativenavigation/e2e/androide2e/ApplicationLifecycleTest.java

@@ -1,24 +1,28 @@
 package com.reactnativenavigation.e2e.androide2e;
 
-import android.content.Intent;
 import android.support.test.runner.AndroidJUnit4;
-import android.support.test.uiautomator.By;
 import android.support.test.uiautomator.UiDevice;
-import android.support.test.uiautomator.Until;
+import android.support.test.uiautomator.UiScrollable;
+import android.support.test.uiautomator.UiSelector;
 
 import org.junit.After;
 import org.junit.Before;
+import org.junit.FixMethodOrder;
 import org.junit.Test;
 import org.junit.runner.RunWith;
+import org.junit.runners.MethodSorters;
+
+import java.io.IOException;
 
 import static android.support.test.InstrumentationRegistry.getInstrumentation;
 import static org.assertj.core.api.Java6Assertions.assertThat;
 
 @RunWith(AndroidJUnit4.class)
+@FixMethodOrder(value = MethodSorters.NAME_ASCENDING)
 public class ApplicationLifecycleTest {
 
     private static final String PACKAGE_NAME = "com.reactnativenavigation.playground";
-    private static final int TIMEOUT = 10000;
+    private static final int TIMEOUT = 2000;
 
     @Before
     public void beforeEach() {
@@ -26,26 +30,48 @@ public class ApplicationLifecycleTest {
     }
 
     @After
-    public void afterEach() {
-        //
+    public void afterEach() throws IOException {
+        uiDevice().executeShellCommand("am force-stop " + PACKAGE_NAME);
     }
 
     @Test
-    public void showSplash_AcceptsOverlayPermissions_ShowsWelcomeScreen() throws Exception {
+    public void _1_showSplash_AcceptsOverlayPermissions_ShowsWelcomeScreen() throws Exception {
         launchTheApp();
 //        assertThat(uiDevice().wait(Until.hasObject(By.desc("NavigationSplashView")), TIMEOUT)).isTrue();
         acceptOverlayPermissionIfNeeded();
         assertMainShown();
     }
 
+    @Test
+    public void _2_relaunchFromBackground() throws Exception {
+        launchTheApp();
+        assertMainShown();
+
+        uiDevice().pressHome();
+        uiDevice().pressRecentApps();
+        uiDevice().findObject(new UiSelector().text("Playground")).click();
+        assertMainShown();
+    }
+
+    @Test
+    public void _3_relaunchAfterClose() throws Exception {
+        launchTheApp();
+        assertMainShown();
+
+        uiDevice().pressBack();
+
+        launchTheApp();
+        assertMainShown();
+    }
+
     private void assertMainShown() {
-        assertThat(uiDevice().findObject(By.text("React Native Navigation!"))).isNotNull();
+        assertThat(uiDevice().findObject(new UiSelector().text("React Native Navigation!")).exists()).isTrue();
     }
 
     private void acceptOverlayPermissionIfNeeded() throws Exception {
-        if (uiDevice().findObject(By.text("Draw over other apps")) != null) {
-            uiDevice().findObject(By.text("Playground")).click();
-            uiDevice().findObject(By.text("Permit drawing over other apps")).click();
+        if (uiDevice().findObject(new UiSelector().text("Draw over other apps")).exists()) {
+            uiDevice().findObject(new UiSelector().text("Playground")).click();
+            uiDevice().findObject(new UiSelector().text("Permit drawing over other apps")).click();
             uiDevice().pressBack();
             uiDevice().pressBack();
         }
@@ -54,11 +80,9 @@ public class ApplicationLifecycleTest {
     private void launchTheApp() throws Exception {
         uiDevice().wakeUp();
         uiDevice().pressHome();
-        uiDevice().waitForIdle();
-        Intent intent = getInstrumentation().getContext().getPackageManager().getLaunchIntentForPackage(PACKAGE_NAME);
-        assertThat(intent).isNotNull();
-        getInstrumentation().getContext().startActivity(intent);
-        uiDevice().wait(Until.hasObject(By.pkg(PACKAGE_NAME).depth(0)), TIMEOUT);
+        uiDevice().findObject(new UiSelector().description("Apps")).clickAndWaitForNewWindow();
+        new UiScrollable(new UiSelector().scrollable(true)).scrollTextIntoView("Playground");
+        uiDevice().findObject(new UiSelector().text("Playground")).clickAndWaitForNewWindow();
     }
 
     private UiDevice uiDevice() {