Add app unit tests to app internal integration test

CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright 2018 Google LLC
+	# Copyright 2018 Google LLC
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.

app/integration_test/src/integration_test.cc

@@ -37,11 +37,14 @@
 
 namespace firebase_testapp_automated {
 
+using app_framework::ProcessEvents;
 using firebase_test_framework::FirebaseTest;
 
 class FirebaseAppTest : public FirebaseTest {
  public:
   FirebaseAppTest();
+  static void SetUpTestSuite();
+  static void TearDownTestSuite();
 };
 
 FirebaseAppTest::FirebaseAppTest() {
@@ -56,6 +59,20 @@ FirebaseAppTest::FirebaseAppTest() {
 #define APP_CREATE_PARAMS
 #endif  // defined(__ANDROID__)
 
+void FirebaseAppTest::SetUpTestSuite() {
+  // Nothing to do here.
+}
+
+void FirebaseAppTest::TearDownTestSuite() {
+  // The App integration test is too fast for FTL, so pause a few seconds
+  // here.
+  ProcessEvents(1000);
+  ProcessEvents(1000);
+  ProcessEvents(1000);
+  ProcessEvents(1000);
+  ProcessEvents(1000);
+}
+
 TEST_F(FirebaseAppTest, TestDefaultAppWithDefaultOptions) {
   firebase::App* default_app;
   default_app = firebase::App::Create(APP_CREATE_PARAMS);

app/integration_test_internal/AndroidManifest.xml

@@ -0,0 +1,43 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* Copyright 2020 Google LLC
+**
+** 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.
+*/
+-->
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="com.google.android.analytics.testapp"
+          android:versionCode="1"
+          android:versionName="1.0">
+  <uses-permission android:name="android.permission.INTERNET" />
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+  <uses-permission android:name="android.permission.WAKE_LOCK" />
+  <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="28" />
+  <application android:label="@string/app_name">
+    <activity android:name="android.app.NativeActivity"
+              android:screenOrientation="portrait"
+              android:configChanges="orientation|screenSize">
+      <meta-data android:name="android.app.lib_name"
+                 android:value="android_integration_test_main" />
+      <intent-filter>
+        <action android:name="android.intent.action.MAIN" />
+        <category android:name="android.intent.category.LAUNCHER" />
+      </intent-filter>
+      <intent-filter>
+       <action android:name="com.google.intent.action.TEST_LOOP"/>
+         <category android:name="android.intent.category.DEFAULT"/>
+         <data android:mimeType="application/javascript"/>
+      </intent-filter>
+    </activity>
+  </application>
+</manifest>