feat(Android): #8011 Convert disabled Android Unit Tests to Instrumentation Tests (#8041)

* Implemented first native android unitest

* More Android Unitests

* Converted TitleSubTitleLayoutTest

* Enabled instrumentation and add run them on ATD

* Added more tests

* Fixed test application

Author: gosha212

lib/android/app/build.gradle

@@ -39,6 +39,8 @@ android {
     defaultConfig {
         minSdkVersion safeExtGetFallbackLowerBound('minSdkVersion', DEFAULT_MIN_SDK_VERSION)
         targetSdkVersion safeExtGetFallbackLowerBound('targetSdkVersion', DEFAULT_TARGET_SDK_VERSION)
+
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
     }
     buildTypes {
         release {
@@ -53,6 +55,15 @@ android {
     }
 
     testOptions {
+        managedDevices {
+            localDevices {
+                pixel3aapi34 {
+                    device = "Pixel 3a"
+                    apiLevel = 34
+                    systemImageSource = "aosp-atd"
+                }
+            }
+        }
         unitTests.includeAndroidResources = true
         unitTests.all { t ->
             maxHeapSize = "4g"
@@ -103,6 +114,7 @@ dependencies {
     //noinspection GradleDynamicVersion
     implementation 'com.facebook.react:react-native:+'
 
+
     if ("Playground".toLowerCase() == rootProject.name.toLowerCase()) {
         // tests only for our playground
         testImplementation 'junit:junit:4.13.2'
@@ -113,5 +125,22 @@ dependencies {
         testImplementation 'org.mockito:mockito-inline:4.6.1'
         testImplementation "org.mockito.kotlin:mockito-kotlin:4.0.0"
         testImplementation "org.jetbrains.kotlin:kotlin-test:$kotlinVersion"
+
+        // Core testing libraries
+        androidTestImplementation "androidx.test.ext:junit:1.2.1"
+        androidTestImplementation 'org.assertj:assertj-core:3.11.1'
+
+        androidTestImplementation "androidx.test.espresso:espresso-core:3.6.1"
+
+        androidTestImplementation "com.linkedin.dexmaker:dexmaker-mockito-inline:2.28.4"
+        androidTestImplementation 'org.opentest4j:opentest4j:1.2.0'
+        androidTestImplementation ("org.mockito.kotlin:mockito-kotlin:5.4.0") {
+            exclude group: 'org.mockito', module: 'mockito-core'
+        }
+
+        androidTestImplementation "androidx.test.uiautomator:uiautomator:2.3.0"
+
+        androidTestImplementation("com.facebook.react:hermes-android")
+
     }
 }

lib/android/app/src/androidTest/AndroidManifest.xml

@@ -0,0 +1,17 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.reactnativenavigation.test">
+
+    <application
+        android:name="com.reactnativenavigation.TestApplication">
+        <activity
+            android:name="com.reactnativenavigation.TestActivity"
+            android:exported="true"
+            android:theme="@style/Theme.AppCompat.Light.NoActionBar"
+            >
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>

lib/android/app/src/androidTest/java/com/reactnativenavigation/BaseAndroidTest.kt

@@ -0,0 +1,4 @@
+package com.reactnativenavigation
+
+abstract class BaseAndroidTest {
+}

lib/android/app/src/androidTest/java/com/reactnativenavigation/TestActivity.kt

@@ -0,0 +1,4 @@
+package com.reactnativenavigation
+
+class TestActivity : NavigationActivity()  {
+}

lib/android/app/src/androidTest/java/com/reactnativenavigation/TestApplication.kt

@@ -0,0 +1,40 @@
+package com.reactnativenavigation
+
+import com.facebook.react.ReactHost
+import com.facebook.react.ReactNativeHost
+import com.facebook.react.ReactPackage
+import com.facebook.react.defaults.DefaultNewArchitectureEntryPoint.load
+import com.facebook.react.defaults.DefaultReactHost.getDefaultReactHost
+import com.facebook.react.shell.MainReactPackage
+import com.reactnativenavigation.react.NavigationPackage
+import com.reactnativenavigation.react.NavigationReactNativeHost
+
+class TestApplication : NavigationApplication() {
+
+
+    override val reactNativeHost: ReactNativeHost
+        get() = object : NavigationReactNativeHost(this) {
+            override fun getJSMainModuleName(): String {
+                return "index"
+            }
+
+            override fun getUseDeveloperSupport(): Boolean {
+                return false
+            }
+
+            public override fun getPackages(): List<ReactPackage> {
+                val packages = listOf(MainReactPackage(null), NavigationPackage())
+                return packages
+            }
+
+            override val isHermesEnabled: Boolean
+                get() = true
+
+            override val isNewArchEnabled: Boolean
+                get() = true
+        }
+
+    override val reactHost: ReactHost
+        get() = getDefaultReactHost(this, reactNativeHost)
+
+}

lib/android/app/src/androidTest/java/com/reactnativenavigation/TestUtils.java

@@ -0,0 +1,65 @@
+package com.reactnativenavigation;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.View;
+import android.view.ViewGroup;
+
+import androidx.annotation.NonNull;
+
+import com.reactnativenavigation.mocks.TitleBarReactViewCreatorMock;
+import com.reactnativenavigation.mocks.TopBarBackgroundViewCreatorMock;
+import com.reactnativenavigation.mocks.TitleBarButtonCreatorMock;
+import com.reactnativenavigation.mocks.TypefaceLoaderMock;
+import com.reactnativenavigation.options.Options;
+import com.reactnativenavigation.options.params.Bool;
+import com.reactnativenavigation.utils.RenderChecker;
+import com.reactnativenavigation.viewcontrollers.stack.StackPresenter;
+import com.reactnativenavigation.react.events.EventEmitter;
+import com.reactnativenavigation.utils.CompatUtils;
+import com.reactnativenavigation.utils.ImageLoader;
+import com.reactnativenavigation.utils.UiUtils;
+import com.reactnativenavigation.viewcontrollers.child.ChildControllersRegistry;
+import com.reactnativenavigation.viewcontrollers.viewcontroller.ViewController;
+import com.reactnativenavigation.viewcontrollers.stack.topbar.button.IconResolver;
+import com.reactnativenavigation.viewcontrollers.stack.StackControllerBuilder;
+import com.reactnativenavigation.viewcontrollers.stack.topbar.TopBarController;
+import com.reactnativenavigation.views.stack.StackLayout;
+import com.reactnativenavigation.views.stack.topbar.TopBar;
+
+import org.mockito.Mockito;
+
+public class TestUtils {
+    public static StackControllerBuilder newStackController(Activity activity) {
+        TopBarController topBarController = new TopBarController() {
+            @Override
+            protected TopBar createTopBar(@NonNull Context context, @NonNull StackLayout stackLayout) {
+                TopBar topBar = super.createTopBar(context, stackLayout);
+                topBar.layout(0, 0, 1000, UiUtils.getTopBarHeight(context));
+                return topBar;
+            }
+        };
+        return new StackControllerBuilder(activity, Mockito.mock(EventEmitter.class))
+                .setId("stack" + CompatUtils.generateViewId())
+                .setChildRegistry(new ChildControllersRegistry())
+                .setTopBarController(topBarController)
+                .setStackPresenter(new StackPresenter(activity, new TitleBarReactViewCreatorMock(),
+                        new TopBarBackgroundViewCreatorMock(), new TitleBarButtonCreatorMock(),
+                        new IconResolver(activity, new ImageLoader()), new TypefaceLoaderMock(), new RenderChecker(),
+                        new Options()))
+                .setInitialOptions(new Options());
+    }
+
+    public static void hideBackButton(ViewController<?> viewController) {
+        viewController.options.topBar.buttons.back.visible = new Bool(false);
+    }
+
+    public static <T extends View> T spyOn(T child) {
+        ViewGroup parent = (ViewGroup) child.getParent();
+        int indexOf = parent.indexOfChild(child);
+        parent.removeView(child);
+        T spy = Mockito.spy(child);
+        parent.addView(spy, indexOf);
+        return spy;
+    }
+}

lib/android/app/src/androidTest/java/com/reactnativenavigation/fakes/IconResolverFake.kt

@@ -0,0 +1,8 @@
+package com.reactnativenavigation.fakes
+
+import android.app.Activity
+import com.reactnativenavigation.mocks.ImageLoaderMock
+import com.reactnativenavigation.utils.ImageLoader
+import com.reactnativenavigation.viewcontrollers.stack.topbar.button.IconResolver
+
+class IconResolverFake(activity: Activity, imageLoader: ImageLoader = ImageLoaderMock.mock()) : IconResolver(activity, imageLoader) 

lib/android/app/src/androidTest/java/com/reactnativenavigation/mocks/BackDrawable.java

@@ -0,0 +1,30 @@
+package com.reactnativenavigation.mocks;
+
+import android.graphics.Canvas;
+import android.graphics.ColorFilter;
+import android.graphics.drawable.Drawable;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+public class BackDrawable extends Drawable {
+    @Override
+    public void draw(@NonNull Canvas canvas) {
+
+    }
+
+    @Override
+    public void setAlpha(int alpha) {
+
+    }
+
+    @Override
+    public void setColorFilter(@Nullable ColorFilter colorFilter) {
+
+    }
+
+    @Override
+    public int getOpacity() {
+        return 0;
+    }
+}

lib/android/app/src/androidTest/java/com/reactnativenavigation/mocks/ImageLoaderMock.kt

@@ -0,0 +1,49 @@
+package com.reactnativenavigation.mocks
+
+import android.graphics.Canvas
+import android.graphics.ColorFilter
+import android.graphics.drawable.Drawable
+
+import com.reactnativenavigation.utils.ImageLoader
+import com.reactnativenavigation.utils.ImageLoader.ImagesLoadingListener
+import org.mockito.Mockito.doAnswer
+import org.mockito.kotlin.any
+import org.mockito.kotlin.mock
+import org.mockito.kotlin.whenever
+import java.util.*
+
+object ImageLoaderMock {
+    val mockDrawable: Drawable = object : Drawable() {
+        override fun draw(canvas: Canvas) {}
+        override fun setAlpha(alpha: Int) {}
+        override fun setColorFilter(colorFilter: ColorFilter?) {}
+        override fun getOpacity(): Int {
+            return 0
+        }
+    }
+    private val backIcon: Drawable = BackDrawable()
+
+    @JvmStatic
+    fun mock(): ImageLoader {
+        return this.mock(mockDrawable)
+    }
+
+    @JvmStatic
+    fun mock(returnDrawable: Drawable = mockDrawable): ImageLoader {
+        val imageLoader = mock<ImageLoader>()
+        doAnswer { invocation ->
+            val urlCount = (invocation.arguments[1] as Collection<*>).size
+            val drawables = Collections.nCopies(urlCount, returnDrawable)
+            (invocation.arguments[2] as ImagesLoadingListener).onComplete(drawables)
+            null
+        }.`when`(imageLoader).loadIcons(any(), any(), any())
+
+        doAnswer { invocation ->
+            (invocation.arguments[2] as ImagesLoadingListener).onComplete(returnDrawable)
+            null
+        }.`when`(imageLoader).loadIcon(any(), any(), any())
+
+        whenever(imageLoader.getBackButtonIcon(any())).thenReturn(backIcon)
+        return imageLoader
+    }
+} 

lib/android/app/src/androidTest/java/com/reactnativenavigation/mocks/SimpleViewController.java

@@ -0,0 +1,110 @@
+package com.reactnativenavigation.mocks;
+
+import static com.reactnativenavigation.utils.ObjectUtils.perform;
+
+import android.app.Activity;
+import android.content.Context;
+import android.view.MotionEvent;
+
+import androidx.annotation.NonNull;
+
+import com.reactnativenavigation.options.Options;
+import com.reactnativenavigation.react.ReactView;
+import com.reactnativenavigation.viewcontrollers.child.ChildController;
+import com.reactnativenavigation.viewcontrollers.child.ChildControllersRegistry;
+import com.reactnativenavigation.viewcontrollers.component.ComponentPresenterBase;
+import com.reactnativenavigation.viewcontrollers.viewcontroller.Presenter;
+import com.reactnativenavigation.viewcontrollers.viewcontroller.ScrollEventListener;
+import com.reactnativenavigation.views.component.ReactComponent;
+
+public class SimpleViewController extends ChildController<SimpleViewController.SimpleView> {
+    private final ComponentPresenterBase presenter = new ComponentPresenterBase();
+
+    public SimpleViewController(Activity activity, ChildControllersRegistry childRegistry, String id, Options options) {
+        this(activity, childRegistry, id, new Presenter(activity, new Options()), options);
+    }
+
+    public SimpleViewController(Activity activity, ChildControllersRegistry childRegistry, String id, Presenter presenter, Options options) {
+        super(activity, childRegistry, id, presenter, options);
+    }
+
+    @Override
+    public SimpleView createView() {
+        return new SimpleView(getActivity());
+    }
+
+    @Override
+    public void sendOnNavigationButtonPressed(String buttonId) {
+        getView().sendOnNavigationButtonPressed(buttonId);
+    }
+
+    @Override
+    public void destroy() {
+        if (!isDestroyed()) performOnParentController(parent -> parent.onChildDestroyed(this));
+        super.destroy();
+    }
+
+    @NonNull
+    @Override
+    public String toString() {
+        return "SimpleViewController " + getId();
+    }
+
+    @Override
+    public int getTopInset() {
+        int statusBarInset = resolveCurrentOptions().statusBar.isHiddenOrDrawBehind() ? 0 : 63;
+        return statusBarInset + perform(getParentController(), 0, p -> p.getTopInset(this));
+    }
+
+    @Override
+    public void applyBottomInset() {
+        if (view != null) presenter.applyBottomInset(view, getBottomInset());
+    }
+
+    @Override
+    public String getCurrentComponentName() {
+        return null;
+    }
+
+    public static class SimpleView extends ReactView implements ReactComponent {
+
+        public SimpleView(@NonNull Context context) {
+            super(context, "compId", "compName");
+        }
+
+        @Override
+        public boolean isRendered() {
+            return getChildCount() >= 1;
+        }
+
+        @Override
+        public boolean isReady() {
+            return false;
+        }
+
+        @Override
+        public ReactView asView() {
+            return this;
+        }
+
+        @Override
+        public void destroy() {
+
+        }
+
+        @Override
+        public void sendOnNavigationButtonPressed(String buttonId) {
+
+        }
+
+        @Override
+        public ScrollEventListener getScrollEventListener() {
+            return null;
+        }
+
+        @Override
+        public void dispatchTouchEventToJs(MotionEvent event) {
+
+        }
+    }
+}