[test] add Android java test to gh workflow

.github/workflows/_android.yml

@@ -73,6 +73,8 @@ jobs:
           curl -O https://gha-artifacts.s3.amazonaws.com/${{ github.repository }}/${{ github.run_id }}/artifacts/llm_demo/app-debug.apk
           curl -O https://gha-artifacts.s3.amazonaws.com/${{ github.repository }}/${{ github.run_id }}/artifacts/llm_demo/app-debug-androidTest.apk
           curl -O https://gha-artifacts.s3.amazonaws.com/${{ github.repository }}/${{ github.run_id }}/artifacts/fp32-xnnpack-custom/model.zip
+          curl -o android-test-debug.apk https://gha-artifacts.s3.amazonaws.com/${{ github.repository }}/${{ github.run_id }}/artifacts/library_test_dir/executorch-debug.apk
+          curl -o android-test-debug-androidTest.apk https://gha-artifacts.s3.amazonaws.com/${{ github.repository }}/${{ github.run_id }}/artifacts/library_test_dir/executorch-debug-androidTest.apk
           unzip model.zip
           mv *.pte model.pte
 

build/build_android_llm_demo.sh

@@ -134,6 +134,11 @@ build_android_demo_apps() {
   pushd extension/benchmark/android/benchmark
   ANDROID_HOME="${ANDROID_SDK:-/opt/android/sdk}" ./gradlew build assembleAndroidTest
   popd
+
+  pushd extension/android_test
+  ANDROID_HOME="${ANDROID_SDK:-/opt/android/sdk}" ./gradlew testDebugUnitTest
+  ANDROID_HOME="${ANDROID_SDK:-/opt/android/sdk}" ./gradlew build assembleAndroidTest
+  popd
 }
 
 collect_artifacts_to_be_uploaded() {
@@ -158,6 +163,11 @@ collect_artifacts_to_be_uploaded() {
   mkdir -p "${MINIBENCH_APP_DIR}"
   cp extension/benchmark/android/benchmark/app/build/outputs/apk/debug/*.apk "${MINIBENCH_APP_DIR}"
   cp extension/benchmark/android/benchmark/app/build/outputs/apk/androidTest/debug/*.apk "${MINIBENCH_APP_DIR}"
+  # Collect Java library test
+  JAVA_LIBRARY_TEST_DIR="${ARTIFACTS_DIR_NAME}/library_test_dir"
+  mkdir -p "${JAVA_LIBRARY_TEST_DIR}"
+  cp extension/android_test/build/outputs/apk/debug/*.apk "${JAVA_LIBRARY_TEST_DIR}"
+  cp extension/android_test/build/outputs/apk/androidTest/debug/*.apk "${JAVA_LIBRARY_TEST_DIR}"
 }
 
 main() {

build/run_android_emulator.sh

@@ -25,3 +25,8 @@ adb shell mkdir -p /data/local/tmp/llama
 adb push model.pte /data/local/tmp/llama
 adb push tokenizer.bin /data/local/tmp/llama
 adb shell am instrument -w -r com.example.executorchllamademo.test/androidx.test.runner.AndroidJUnitRunner
+
+adb install -t android-test-debug.apk
+adb install -t android-test-debug-androidTest.apk
+
+adb shell am instrument -w -r org.pytorch.executorch.test/androidx.test.runner.AndroidJUnitRunner

extension/android_test/build.gradle

@@ -5,30 +5,21 @@
  * This source code is licensed under the BSD-style license found in the
  * LICENSE file in the root directory of this source tree.
  */
- buildscript {
-    repositories {
-        google()
-        mavenCentral()
-        gradlePluginPortal()
-    }
-    dependencies {
-        classpath 'com.android.tools.build:gradle:7.3.0'
-    }
+plugins {
+  id("com.android.application") version "8.1.0" apply false
 }
 
-
-apply plugin: 'com.android.library'
-
 group 'org.pytorch.executorch'
 
+apply plugin: "com.android.application"
 
 android {
     namespace 'org.pytorch.executorch'
-    compileSdkVersion 31
-    buildToolsVersion "29.0.0"
+    compileSdk = 34
+
     defaultConfig {
-        minSdkVersion 28
-        targetSdkVersion 31
+        minSdk = 28
+        targetSdk = 33
         versionCode 1
         versionName "1.0"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -57,7 +48,7 @@ dependencies {
 }
 
 task('setupNativeLibs', type: Exec){
-    commandLine("sh", "setup.sh")
+    commandLine("bash", "setup.sh")
 }
 
 gradle.projectsEvaluated {

extension/android_test/setup.sh

@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/bash
 # Copyright (c) Meta Platforms, Inc. and affiliates.
 # All rights reserved.
 #
@@ -16,6 +16,7 @@ source "$BASEDIR"/../../build/build_android_llm_demo.sh
 build_native_library() {
   ANDROID_ABI="$1"
   CMAKE_OUT="cmake-out-android-${ANDROID_ABI}"
+  ANDROID_NDK="${ANDROID_NDK:-/opt/ndk}"
   EXECUTORCH_CMAKE_BUILD_TYPE="${EXECUTORCH_CMAKE_BUILD_TYPE:-Release}"
   cmake . -DCMAKE_INSTALL_PREFIX="${CMAKE_OUT}" \
     -DCMAKE_TOOLCHAIN_FILE="${ANDROID_NDK}/build/cmake/android.toolchain.cmake" \
@@ -52,6 +53,7 @@ build_jar
 build_native_library "arm64-v8a"
 build_native_library "x86_64"
 build_aar
+bash examples/models/llama/install_requirements.sh
 source ".ci/scripts/test_llama.sh" stories110M cmake fp16 portable ${BUILD_AAR_DIR}
 popd
 mkdir -p "$BASEDIR"/src/libs