Removing test class TaplViewInflationDuringSwipeUp

/*

 * Copyright (C) 2019 The Android Open Source Project

 *

 * 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.

 */

package com.android.quickstep;

import static androidx.test.InstrumentationRegistry.getContext;

import static androidx.test.InstrumentationRegistry.getInstrumentation;

import static com.android.launcher3.WorkspaceLayoutManager.FIRST_SCREEN_ID;

import static com.android.launcher3.testcomponent.TestCommandReceiver.EXTRA_VALUE;

import static com.android.launcher3.testcomponent.TestCommandReceiver.SET_LIST_VIEW_SERVICE_BINDER;

import static com.android.launcher3.util.WidgetUtils.createWidgetInfo;

import static com.android.quickstep.NavigationModeSwitchRule.Mode.ZERO_BUTTON;

import static org.junit.Assert.assertEquals;

import static org.junit.Assert.assertNotEquals;

import static org.junit.Assert.assertNotNull;

import static org.junit.Assert.assertTrue;

import static org.mockito.Mockito.doAnswer;

import static org.mockito.Mockito.spy;

import android.appwidget.AppWidgetManager;

import android.content.Context;

import android.content.Intent;

import android.os.Bundle;

import android.util.Log;

import android.util.SparseArray;

import android.view.View;

import android.view.ViewConfiguration;

import android.widget.RemoteViews;

import androidx.test.ext.junit.runners.AndroidJUnit4;

import androidx.test.filters.LargeTest;

import androidx.test.filters.Suppress;

import androidx.test.uiautomator.By;

import androidx.test.uiautomator.UiDevice;

import androidx.test.uiautomator.Until;

import com.android.launcher3.LauncherAppState;

import com.android.launcher3.LauncherModel;

import com.android.launcher3.celllayout.FavoriteItemsTransaction;

import com.android.launcher3.model.data.LauncherAppWidgetInfo;

import com.android.launcher3.tapl.LaunchedAppState;

import com.android.launcher3.testcomponent.ListViewService;

import com.android.launcher3.testcomponent.ListViewService.SimpleViewsFactory;

import com.android.launcher3.testcomponent.TestCommandReceiver;

import com.android.launcher3.ui.TestViewHelpers;

import com.android.launcher3.util.Executors;

import com.android.launcher3.widget.LauncherAppWidgetProviderInfo;

import com.android.quickstep.NavigationModeSwitchRule.NavigationModeSwitch;

import org.junit.Before;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.mockito.invocation.InvocationOnMock;

import org.mockito.stubbing.Answer;

import java.lang.reflect.Field;

import java.util.concurrent.atomic.AtomicInteger;

import java.util.function.IntConsumer;

/**

 * Test to verify view inflation does not happen during swipe up.

 * To verify view inflation, we setup a stub ViewConfiguration and check if any call to that class

 * does from a View.init method or not.

 *

 * Alternative approaches considered:

 *    Overriding LayoutInflater: This does not cover views initialized

 *        directly (ex: new LinearLayout)

 *    Using ExtendedMockito: Mocking static methods from platform classes (loaded in zygote) makes

 *        the main thread extremely slow and untestable

 */

@LargeTest

@RunWith(AndroidJUnit4.class)

public class TaplViewInflationDuringSwipeUp extends AbstractQuickStepTest {

    private SparseArray<ViewConfiguration> mConfigMap;

    private InitTracker mInitTracker;

    private LauncherModel mModel;

    @Before

    public void setUp() throws Exception {

        // Workaround for b/142351228, when there are no activities, the system may not destroy the

        // activity correctly for activities under instrumentation, which can leave two concurrent

        // activities, which changes the order in which the activities are cleaned up (overlapping

        // stop and start) leading to all sort of issues. To workaround this, ensure that the test

        // is started only after starting another app.

        startAppFast(resolveSystemApp(Intent.CATEGORY_APP_CALCULATOR));

        super.setUp();

        mModel = LauncherAppState.getInstance(mTargetContext).getModel();

        Executors.MODEL_EXECUTOR.submit(mModel.getModelDbController()::createEmptyDB).get();

        // Get static configuration map

        Field field = ViewConfiguration.class.getDeclaredField("sConfigurations");

        field.setAccessible(true);

        mConfigMap = (SparseArray<ViewConfiguration>) field.get(null);

        mInitTracker = new InitTracker();

    }

    @Test

    @NavigationModeSwitch(mode = ZERO_BUTTON)

    @Suppress // until b/190618549 is fixed

    public void testSwipeUpFromApp() throws Exception {

        try {

            // Go to overview once so that all views are initialized and cached

            startAppFast(resolveSystemApp(Intent.CATEGORY_APP_CALCULATOR));

            mLauncher.getLaunchedAppState().switchToOverview().dismissAllTasks();

            // Track view creations

            mInitTracker.startTracking();

            startTestActivity(2);

            mLauncher.getLaunchedAppState().switchToOverview();

            assertEquals("Views inflated during swipe up", 0, mInitTracker.viewInitCount);

        } finally {

            mConfigMap.clear();

        }

    }

    @Test

    @NavigationModeSwitch(mode = ZERO_BUTTON)

    @Suppress // until b/190729479 is fixed

    public void testSwipeUpFromApp_widget_update() {

        String stubText = "Some random stub text";

        executeSwipeUpTestWithWidget(

                widgetId -> { },

                widgetId -> AppWidgetManager.getInstance(getContext())

                        .updateAppWidget(widgetId, createMainWidgetViews(stubText)),

                stubText);

    }

    @Test

    @NavigationModeSwitch(mode = ZERO_BUTTON)

    @Suppress // until b/190729479 is fixed

    public void testSwipeUp_with_list_widgets() {

        SimpleViewsFactory viewFactory = new SimpleViewsFactory();

        viewFactory.viewCount = 1;

        Bundle args = new Bundle();

        args.putBinder(EXTRA_VALUE, viewFactory.toBinder());

        TestCommandReceiver.callCommand(SET_LIST_VIEW_SERVICE_BINDER, null, args);

        try {

            executeSwipeUpTestWithWidget(

                    widgetId -> {

                        // Initialize widget

                        RemoteViews views = createMainWidgetViews("List widget title");

                        views.setRemoteAdapter(android.R.id.list,

                                new Intent(getContext(), ListViewService.class));

                        AppWidgetManager.getInstance(getContext()).updateAppWidget(widgetId, views);

                        verifyWidget(viewFactory.getLabel(0));

                    },

                    widgetId -> {

                        // Update widget

                        viewFactory.viewCount = 2;

                        AppWidgetManager.getInstance(getContext())

                                .notifyAppWidgetViewDataChanged(widgetId, android.R.id.list);

                    },

                    viewFactory.getLabel(1)

            );

        } finally {

            TestCommandReceiver.callCommand(SET_LIST_VIEW_SERVICE_BINDER, null, new Bundle());

        }

    }

    private void executeSwipeUpTestWithWidget(IntConsumer widgetIdCreationCallback,

            IntConsumer updateBeforeSwipeUp, String finalWidgetText) {

        try {

            LauncherAppWidgetProviderInfo info = TestViewHelpers.findWidgetProvider(false);

            // Make sure the widget is big enough to show a list of items

            info.minSpanX = 2;

            info.minSpanY = 2;

            info.spanX = 2;

            info.spanY = 2;

            AtomicInteger widgetId = new AtomicInteger();

            commitTransactionAndLoadHome(new FavoriteItemsTransaction(mTargetContext)

                    .addItem(() -> {

                        LauncherAppWidgetInfo item = createWidgetInfo(info, mTargetContext, true);

                        item.screenId = FIRST_SCREEN_ID;

                        widgetId.set(item.appWidgetId);

                        return item;

                    }));

            assertTrue("Widget is not present",

                    mLauncher.goHome().tryGetWidget(info.label, DEFAULT_UI_TIMEOUT) != null);

            // Verify widget id

            widgetIdCreationCallback.accept(widgetId.get());

            // Go to overview once so that all views are initialized and cached

            startAppFast(resolveSystemApp(Intent.CATEGORY_APP_CALCULATOR));

            mLauncher.getLaunchedAppState().switchToOverview().dismissAllTasks();

            // Track view creations

            mInitTracker.startTracking();

            startTestActivity(2);

            LaunchedAppState launchedAppState = mLauncher.getLaunchedAppState();

            // Update widget

            updateBeforeSwipeUp.accept(widgetId.get());

            launchedAppState.switchToOverview();

            assertEquals("Views inflated during swipe up", 0, mInitTracker.viewInitCount);

            // Widget is updated when going home

            mInitTracker.disableLog();

            mLauncher.goHome();

            verifyWidget(finalWidgetText);

            assertNotEquals(1, mInitTracker.viewInitCount);

        } finally {

            mConfigMap.clear();

        }

    }

    private void verifyWidget(String text) {

        assertNotNull("Widget not updated",

                UiDevice.getInstance(getInstrumentation())

                        .wait(Until.findObject(By.text(text)), DEFAULT_UI_TIMEOUT));

    }

    private RemoteViews createMainWidgetViews(String title) {

        Context c = getContext();

        int layoutId = c.getResources().getIdentifier(

                "test_layout_widget_list", "layout", c.getPackageName());

        RemoteViews views = new RemoteViews(c.getPackageName(), layoutId);

        views.setTextViewText(android.R.id.text1, title);

        return views;

    }

    private class InitTracker implements Answer {

        public int viewInitCount = 0;

        public boolean log = true;

        @Override

        public Object answer(InvocationOnMock invocation) throws Throwable {

            Exception ex = new Exception();

            boolean found = false;

            for (StackTraceElement ste : ex.getStackTrace()) {

                if ("<init>".equals(ste.getMethodName())

                        && View.class.getName().equals(ste.getClassName())) {

                    found = true;

                    break;

                }

            }

            if (found) {

                viewInitCount++;

                if (log) {

                    Log.d("InitTracker", "New view inflated", ex);

                }

            }

            return invocation.callRealMethod();

        }

        public void disableLog() {

            log = false;

        }

        public void startTracking() {

            ViewConfiguration vc = ViewConfiguration.get(mTargetContext);

            ViewConfiguration spyVC = spy(vc);

            mConfigMap.put(mConfigMap.keyAt(mConfigMap.indexOfValue(vc)), spyVC);

            doAnswer(this).when(spyVC).getScaledTouchSlop();

        }

    }

}