refactor: shared "testlib" module, used by AnkiDroid test and androidTest

AnkiDroid/build.gradle

@@ -76,9 +76,9 @@ android {
         // needed for upgrades to be offered correctly.
         versionCode=21700117
         versionName="2.17alpha17"
-        minSdk 23
+        minSdk 23 // also in testlib/build.gradle.kts
         // After #13695: change .tests_emulator.yml
-        targetSdk 33 // change api/build.gradle.kts and update ../robolectricDownloader.gradle at same time
+        targetSdk 33 // also in [api|testlib]/build.gradle.kts and ../robolectricDownloader.gradle
         testApplicationId "com.ichi2.anki.tests"
         vectorDrawables.useSupportLibrary = true
         testInstrumentationRunner 'com.ichi2.testutils.NewCollectionPathTestRunner'
@@ -155,6 +155,8 @@ android {
      * Product Flavors are used for Amazon App Store and Google Play Store.
      * This is because we cannot use Camera Permissions in Amazon App Store (for FireTv etc...)
      * Therefore, different AndroidManifest for Camera Permissions is used in Amazon flavor.
+     *
+     * This flavor block must stay in sync with the same block in testlib/build.gradle.kts
      */
     flavorDimensions += "appStore"
     productFlavors {
@@ -369,6 +371,8 @@ dependencies {
     // build via AnkiDroidApp.
     implementation 'com.squareup.leakcanary:leakcanary-android:2.13'
 
+    testImplementation project(':testlib')
+
     // A path for a testing library which provide Parameterized Test
     testImplementation "org.junit.jupiter:junit-jupiter:$junit_version"
     testImplementation "org.junit.jupiter:junit-jupiter-params:$junit_version"
@@ -391,6 +395,9 @@ dependencies {
     // in a JvmTest we need org.json.JSONObject to not be mocked
     testImplementation 'org.json:json:20231013'
     testImplementation 'io.github.ivanshafran:shared-preferences-mock:1.2.4'
+
+    androidTestImplementation project(':testlib')
+
     // May need a resolution strategy for support libs to our versions
     androidTestImplementation "androidx.test.espresso:espresso-core:$espresso_version"
     androidTestImplementation("androidx.test.espresso:espresso-contrib:$espresso_version") {

settings.gradle.kts

@@ -26,4 +26,4 @@ dependencyResolutionManagement {
     }
 }
 
-include(":lint-rules", ":api", ":AnkiDroid")
+include(":lint-rules", ":api", ":AnkiDroid", ":testlib")

testlib/.gitignore

@@ -0,0 +1 @@
+/build

testlib/build.gradle.kts

@@ -0,0 +1,52 @@
+plugins {
+    id("com.android.library")
+    id("kotlin-android")
+}
+
+android {
+    namespace = "com.ichi2.anki.testlib"
+    compileSdk = 34
+
+    defaultConfig {
+        minSdk = 23
+    }
+
+    flavorDimensions += "appStore"
+    productFlavors {
+        create("play") {
+            dimension = "appStore"
+        }
+        create("amazon") {
+            dimension = "appStore"
+        }
+        // A 'full' build has no restrictions on storage/camera. Distributed on GitHub/F-Droid
+        create("full") {
+            dimension = "appStore"
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = JavaVersion.VERSION_11
+        targetCompatibility = JavaVersion.VERSION_11
+
+        kotlinOptions {
+            jvmTarget = "11"
+            freeCompilerArgs += "-opt-in=kotlinx.coroutines.ExperimentalCoroutinesApi"
+        }
+
+        packaging {
+            resources {
+                excludes += "META-INF/DEPENDENCIES"
+            }
+        }
+    }
+}
+
+dependencies {
+    implementation(project(":AnkiDroid"))
+    compileOnly("org.jetbrains.kotlinx:kotlinx-coroutines-core")
+    compileOnly("org.hamcrest:hamcrest:" + rootProject.ext["hamcrest_version"])
+    compileOnly("org.junit.jupiter:junit-jupiter:" + rootProject.ext["junit_version"])
+    compileOnly("org.junit.jupiter:junit-jupiter-params:" + rootProject.ext["junit_version"])
+    compileOnly("org.junit.vintage:junit-vintage-engine:" + rootProject.ext["junit_version"])
+}

testlib/src/main/AndroidManifest.xml

@@ -0,0 +1,2 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest />