First UI Automator example test

androidTest/java/com/owncloud/android/uiautomator/LaunchAppTest.java

@@ -0,0 +1,98 @@
+/**
+ *   ownCloud Android client application
+ *
+ *   Copyright (C) 2015 ownCloud Inc.
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License version 2,
+ *   as published by the Free Software Foundation.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package com.owncloud.android.uiautomator;
+
+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 android.support.test.InstrumentationRegistry;
+import android.support.test.filters.SdkSuppress;
+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 static org.hamcrest.CoreMatchers.notNullValue;
+import static org.junit.Assert.assertThat;
+
+/**
+ * UI Automator test to launch the owncloud app through the system
+ */
+@RunWith(AndroidJUnit4.class)
+@SdkSuppress(minSdkVersion = 18)
+public class LaunchAppTest {
+
+    private static final String OWNCLOUD_APP_PACKAGE = "com.owncloud.android";
+
+    private static final int LAUNCH_TIMEOUT = 5000;
+
+    private UiDevice mDevice;
+
+    @Before
+    public void startMainActivityFromHomeScreen() {
+        // Initialize UiDevice instance
+        mDevice = UiDevice.getInstance(InstrumentationRegistry.getInstrumentation());
+
+        // Perform a short press on the HOME button
+        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 app
+        Context context = InstrumentationRegistry.getContext();
+        final Intent intent = context.getPackageManager()
+                .getLaunchIntentForPackage(OWNCLOUD_APP_PACKAGE);
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
+        context.startActivity(intent);
+
+        // Wait for the app to appear
+        mDevice.wait(Until.hasObject(By.pkg(OWNCLOUD_APP_PACKAGE).depth(0)), LAUNCH_TIMEOUT);
+    }
+
+    @Test
+    public void checkPreconditions() {
+        assertThat(mDevice, notNullValue());
+    }
+
+    /**
+     * 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 = InstrumentationRegistry.getContext().getPackageManager();
+        ResolveInfo resolveInfo = pm.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY);
+        return resolveInfo.activityInfo.packageName;
+    }
+}