Add an initial version of App Check integration test

Android/firebase_dependencies.gradle

@@ -77,6 +77,9 @@ class Dependencies {
   def getAnalytics() {
     libSet.add('analytics')
   }
+  def getAppCheck() {
+    libSet.add('app_check')
+  }
   def getAuth() {
     libSet.add('auth')
   }

app/CMakeLists.txt

@@ -493,6 +493,13 @@ if (IOS)
     ${analytics_generated_headers_dir}/event_names.h
     ${analytics_generated_headers_dir}/parameter_names.h
     ${analytics_generated_headers_dir}/user_property_names.h)
+  set(app_check_HDRS
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check.h
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check/app_attest_provider.h
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check/debug_provider.h
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check/device_check_provider.h
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check/play_integrity_provider.h
+    ${FIREBASE_SOURCE_DIR}/app_check/src/include/firebase/app_check/safety_net_provider.h)
   set(auth_HDRS
     ${FIREBASE_SOURCE_DIR}/auth/src/include/firebase/auth.h
     ${FIREBASE_SOURCE_DIR}/auth/src/include/firebase/auth/credential.h
@@ -565,6 +572,7 @@ if (IOS)
     src/include/firebase/internal/platform.h
     ${admob_HDRS}
     ${analytics_HDRS}
+    ${app_check_HDRS}
     ${auth_HDRS}
     ${database_HDRS}
     ${dynamic_links_HDRS}

app_check/integration_test/AndroidManifest.xml

@@ -0,0 +1,44 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+/* Copyright 2022 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.firebase.cpp.appcheck.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>
+    <meta-data android:name="com.google.test.loops" android:value="1" />
+  </application>
+</manifest>

app_check/integration_test/CMakeLists.txt

@@ -0,0 +1,227 @@
+# Copyright 2022 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.
+
+# Cmake file for a single C++ integration test build.
+
+cmake_minimum_required(VERSION 2.8)
+
+set(FIREBASE_PYTHON_EXECUTABLE "python" CACHE FILEPATH
+  "The Python interpreter to use, such as one from a venv")
+
+# User settings for Firebase integration tests.
+# Path to Firebase SDK.
+# Try to read the path to the Firebase C++ SDK from an environment variable.
+if (NOT "$ENV{FIREBASE_CPP_SDK_DIR}" STREQUAL "")
+  set(DEFAULT_FIREBASE_CPP_SDK_DIR "$ENV{FIREBASE_CPP_SDK_DIR}")
+else()
+  if(EXISTS "${CMAKE_CURRENT_LIST_DIR}/../../cpp_sdk_version.json")
+    set(DEFAULT_FIREBASE_CPP_SDK_DIR "${CMAKE_CURRENT_LIST_DIR}/../..")
+  else()
+    set(DEFAULT_FIREBASE_CPP_SDK_DIR "firebase_cpp_sdk")
+  endif()
+endif()
+if ("${FIREBASE_CPP_SDK_DIR}" STREQUAL "")
+  set(FIREBASE_CPP_SDK_DIR ${DEFAULT_FIREBASE_CPP_SDK_DIR})
+endif()
+if(NOT EXISTS ${FIREBASE_CPP_SDK_DIR})
+  message(FATAL_ERROR "The Firebase C++ SDK directory does not exist: ${FIREBASE_CPP_SDK_DIR}. See the readme.md for more information")
+endif()
+
+# Copy all prerequisite files for integration tests to run.
+if(NOT ANDROID)
+  if (EXISTS ${CMAKE_CURRENT_LIST_DIR}/../../setup_integration_tests.py)
+    # If this is running from inside the SDK directory, run the setup script.
+    execute_process(COMMAND ${FIREBASE_PYTHON_EXECUTABLE} "${CMAKE_CURRENT_LIST_DIR}/../../setup_integration_tests.py" "${CMAKE_CURRENT_LIST_DIR}")
+  endif()
+endif()
+
+# Windows runtime mode, either MD or MT depending on whether you are using
+# /MD or /MT. For more information see:
+# https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
+set(MSVC_RUNTIME_MODE MD)
+
+project(firebase_testapp)
+
+# Integration test source files.
+set(FIREBASE_APP_FRAMEWORK_SRCS
+  src/app_framework.cc
+  src/app_framework.h
+)
+
+set(FIREBASE_TEST_FRAMEWORK_SRCS
+  src/firebase_test_framework.h
+  src/firebase_test_framework.cc
+)
+
+set(FIREBASE_INTEGRATION_TEST_SRCS
+  src/integration_test.cc
+)
+
+# The include directory for the testapp.
+include_directories(src)
+
+# Integration test uses some features that require C++ 11, such as lambdas.
+set (CMAKE_CXX_STANDARD 11)
+
+# Download and unpack googletest (and googlemock) at configure time
+set(GOOGLETEST_ROOT ${CMAKE_CURRENT_LIST_DIR}/external/googletest)
+# Note: Once googletest is downloaded once, it won't be updated or
+# downloaded again unless you delete the "external/googletest"
+# directory.
+if (NOT EXISTS ${GOOGLETEST_ROOT}/src/googletest/src/gtest-all.cc)
+  configure_file(googletest.cmake
+    ${CMAKE_CURRENT_LIST_DIR}/external/googletest/CMakeLists.txt COPYONLY)
+  execute_process(COMMAND ${CMAKE_COMMAND} .
+    RESULT_VARIABLE result
+    WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/external/googletest )
+  if(result)
+    message(FATAL_ERROR "CMake step for googletest failed: ${result}")
+  endif()
+  execute_process(COMMAND ${CMAKE_COMMAND} --build .
+    RESULT_VARIABLE result
+    WORKING_DIRECTORY ${CMAKE_CURRENT_LIST_DIR}/external/googletest )
+  if(result)
+    message(FATAL_ERROR "Build step for googletest failed: ${result}")
+  endif()
+endif()
+
+if(ANDROID)
+  # Build an Android application.
+
+  # Source files used for the Android build.
+  set(FIREBASE_APP_FRAMEWORK_ANDROID_SRCS
+    src/android/android_app_framework.cc
+  )
+
+  # Source files used for the Android build.
+  set(FIREBASE_TEST_FRAMEWORK_ANDROID_SRCS
+    src/android/android_firebase_test_framework.cc
+  )
+
+  # Build native_app_glue as a static lib
+  add_library(native_app_glue STATIC
+    ${ANDROID_NDK}/sources/android/native_app_glue/android_native_app_glue.c)
+
+  # Export ANativeActivity_onCreate(),
+  # Refer to: https://github.com/android-ndk/ndk/issues/381.
+  set(CMAKE_SHARED_LINKER_FLAGS
+      "${CMAKE_SHARED_LINKER_FLAGS} -u ANativeActivity_onCreate")
+
+  add_library(gtest STATIC
+    ${GOOGLETEST_ROOT}/src/googletest/src/gtest-all.cc)
+  target_include_directories(gtest
+    PRIVATE ${GOOGLETEST_ROOT}/src/googletest
+    PUBLIC ${GOOGLETEST_ROOT}/src/googletest/include)
+  add_library(gmock STATIC
+    ${GOOGLETEST_ROOT}/src/googlemock/src/gmock-all.cc)
+  target_include_directories(gmock
+    PRIVATE ${GOOGLETEST_ROOT}/src/googletest
+    PRIVATE ${GOOGLETEST_ROOT}/src/googlemock
+    PUBLIC ${GOOGLETEST_ROOT}/src/googletest/include
+    PUBLIC ${GOOGLETEST_ROOT}/src/googlemock/include)
+
+  # Define the target as a shared library, as that is what gradle expects.
+  set(integration_test_target_name "android_integration_test_main")
+  add_library(${integration_test_target_name} SHARED
+    ${FIREBASE_APP_FRAMEWORK_SRCS}
+    ${FIREBASE_APP_FRAMEWORK_ANDROID_SRCS}
+    ${FIREBASE_INTEGRATION_TEST_SRCS}
+    ${FIREBASE_TEST_FRAMEWORK_SRCS}
+    ${FIREBASE_TEST_FRAMEWORK_ANDROID_SRCS}
+  )
+
+  target_include_directories(${integration_test_target_name} PRIVATE
+    ${ANDROID_NDK}/sources/android/native_app_glue)
+
+  set(ADDITIONAL_LIBS log android atomic native_app_glue)
+else()
+  # Build a desktop application.
+  add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
+
+  # Prevent overriding the parent project's compiler/linker
+  # settings on Windows
+  set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+  # Add googletest directly to our build. This defines
+  # the gtest and gtest_main targets.
+  add_subdirectory(${CMAKE_CURRENT_LIST_DIR}/external/googletest/src
+                   ${CMAKE_CURRENT_LIST_DIR}/external/googletest/build
+                   EXCLUDE_FROM_ALL)
+
+  # The gtest/gtest_main targets carry header search path
+  # dependencies automatically when using CMake 2.8.11 or
+  # later. Otherwise we have to add them here ourselves.
+  if (CMAKE_VERSION VERSION_LESS 2.8.11)
+    include_directories("${gtest_SOURCE_DIR}/include")
+    include_directories("${gmock_SOURCE_DIR}/include")
+  endif()
+
+  # Windows runtime mode, either MD or MT depending on whether you are using
+  # /MD or /MT. For more information see:
+  # https://msdn.microsoft.com/en-us/library/2kzt1wy3.aspx
+  set(MSVC_RUNTIME_MODE MD)
+
+  # Platform abstraction layer for the desktop integration test.
+  set(FIREBASE_APP_FRAMEWORK_DESKTOP_SRCS
+    src/desktop/desktop_app_framework.cc
+  )
+
+  set(integration_test_target_name "integration_test")
+  add_executable(${integration_test_target_name}
+    ${FIREBASE_APP_FRAMEWORK_SRCS}
+    ${FIREBASE_APP_FRAMEWORK_DESKTOP_SRCS}
+    ${FIREBASE_TEST_FRAMEWORK_SRCS}
+    ${FIREBASE_INTEGRATION_TEST_SRCS}
+  )
+
+  if(APPLE)
+    set(ADDITIONAL_LIBS
+      gssapi_krb5
+      pthread
+      "-framework CoreFoundation"
+      "-framework Foundation"
+      "-framework GSS"
+      "-framework Security"
+    )
+  elseif(MSVC)
+    set(ADDITIONAL_LIBS advapi32 ws2_32 crypt32 iphlpapi psapi userenv shell32)
+  else()
+    set(ADDITIONAL_LIBS pthread)
+  endif()
+
+  # If a config file is present, copy it into the binary location so that it's
+  # possible to create the default Firebase app.
+  set(FOUND_JSON_FILE FALSE)
+  foreach(config "google-services-desktop.json" "google-services.json")
+    if (EXISTS "${CMAKE_CURRENT_LIST_DIR}/${config}")
+      add_custom_command(
+        TARGET ${integration_test_target_name} POST_BUILD
+        COMMAND ${CMAKE_COMMAND} -E copy
+          "${CMAKE_CURRENT_LIST_DIR}/${config}" $<TARGET_FILE_DIR:${integration_test_target_name}>)
+      set(FOUND_JSON_FILE TRUE)
+      break()
+    endif()
+  endforeach()
+  if(NOT FOUND_JSON_FILE)
+    message(WARNING "Failed to find either google-services-desktop.json or google-services.json. See the readme.md for more information.")
+  endif()
+endif()
+
+# Add the Firebase libraries to the target using the function from the SDK.
+add_subdirectory(${FIREBASE_CPP_SDK_DIR} bin/ EXCLUDE_FROM_ALL)
+# Note that firebase_app needs to be last in the list.
+set(firebase_libs firebase_app_check firebase_database firebase_auth firebase_app)
+set(gtest_libs gtest gmock)
+target_link_libraries(${integration_test_target_name} ${firebase_libs}
+  ${gtest_libs} ${ADDITIONAL_LIBS})