content: /*
   * Copyright 2015, The Android Open Source Project
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package com.example.android.testing.uiautomator.BasicSample;
  
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  
  import android.content.Context;
  import android.content.Intent;
  import android.content.pm.PackageManager;
  import android.content.pm.ResolveInfo;
  
  import static androidx.test.core.app.ApplicationProvider.getApplicationContext;
  import static androidx.test.platform.app.InstrumentationRegistry.getInstrumentation;
  import androidx.test.filters.SdkSuppress;
  import androidx.test.ext.junit.runners.AndroidJUnit4;
  import androidx.test.uiautomator.By;
  import androidx.test.uiautomator.UiDevice;
  import androidx.test.uiautomator.UiObject2;
  import androidx.test.uiautomator.Until;
  
  import static org.hamcrest.CoreMatchers.equalTo;
  import static org.hamcrest.CoreMatchers.is;
  import static org.hamcrest.CoreMatchers.notNullValue;
  import static org.junit.Assert.assertThat;
  
  /**
   * Basic sample for unbundled UiAutomator.
   */
  @RunWith(AndroidJUnit4.class)
  @SdkSuppress(minSdkVersion = 18)
  public class ChangeTextBehaviorTest {
  
      private static final String BASIC_SAMPLE_PACKAGE
              = "com.example.android.testing.uiautomator.BasicSample";
  
      private static final int LAUNCH_TIMEOUT = 5000;
  
      private static final String STRING_TO_BE_TYPED = "UiAutomator";
  
      private UiDevice mDevice;
  
      @Before
      public void startMainActivityFromHomeScreen() {
          // Initialize UiDevice instance
          mDevice = UiDevice.getInstance(getInstrumentation());
  
          // Start from the home screen
          mDevice.pressHome();
  
          // Wait for launcher
          final String launcherPackage = getLauncherPackageName();
          assertThat(launcherPackage, notNullValue());
          mDevice.wait(Until.hasObject(By.pkg(launcherPackage).depth(0)), LAUNCH_TIMEOUT);
  
          // Launch the blueprint app
          Context context = getApplicationContext();
          final Intent intent = context.getPackageManager()
                  .getLaunchIntentForPackage(BASIC_SAMPLE_PACKAGE);
          intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);    // Clear out any previous instances
          context.startActivity(intent);
  
          // Wait for the app to appear
          mDevice.wait(Until.hasObject(By.pkg(BASIC_SAMPLE_PACKAGE).depth(0)), LAUNCH_TIMEOUT);
      }
  
      @Test
      public void checkPreconditions() {
          assertThat(mDevice, notNullValue());
      }
  
      @Test
      public void testChangeText_sameActivity() {
          // Type text and then press the button.
          mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "editTextUserInput"))
                  .setText(STRING_TO_BE_TYPED);
          mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "changeTextBt"))
                  .click();
  
          // Verify the test is displayed in the Ui
          UiObject2 changedText = mDevice
                  .wait(Until.findObject(By.res(BASIC_SAMPLE_PACKAGE, "textToBeChanged")),
                          500 /* wait 500ms */);
          assertThat(changedText.getText(), is(equalTo(STRING_TO_BE_TYPED)));
      }
  
      @Test
      public void testChangeText_newActivity() {
          // Type text and then press the button.
          mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "editTextUserInput"))
                  .setText(STRING_TO_BE_TYPED);
          mDevice.findObject(By.res(BASIC_SAMPLE_PACKAGE, "activityChangeTextBtn"))
                  .click();
  
          // Verify the test is displayed in the Ui
          UiObject2 changedText = mDevice
                  .wait(Until.findObject(By.res(BASIC_SAMPLE_PACKAGE, "show_text_view")),
                          500 /* wait 500ms */);
          assertThat(changedText.getText(), is(equalTo(STRING_TO_BE_TYPED)));
      }
  
      /**
       * Uses package manager to find the package name of the device launcher. Usually this package
       * is "com.android.launcher" but can be different at times. This is a generic solution which
       * works on all platforms.`
       */
      private String getLauncherPackageName() {
          // Create launcher Intent
          final Intent intent = new Intent(Intent.ACTION_MAIN);
          intent.addCategory(Intent.CATEGORY_HOME);
  
          // Use PackageManager to get the launcher package name
          PackageManager pm = getApplicationContext().getPackageManager();
          ResolveInfo resolveInfo = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
          return resolveInfo.activityInfo.packageName;
      }
  }
  