Verifying that tests run against a matching Launcher version

import android.content.pm.ActivityInfo;

import android.content.pm.LauncherActivityInfo;

import android.content.pm.LauncherApps;

import android.content.pm.PackageInfo;

import android.content.pm.PackageManager;

import android.os.Debug;

import android.os.Process;

import com.android.launcher3.util.rule.TestStabilityRule;

import org.junit.After;

import org.junit.Assert;

import org.junit.Before;

import org.junit.Rule;

import org.junit.rules.RuleChain;

    @Before

    public void setUp() throws Exception {

        final String launcherPackageName = mDevice.getLauncherPackageName();

        try {

            final Context context = InstrumentationRegistry.getContext();

            final PackageManager pm = context.getPackageManager();

            final PackageInfo launcherPackage = pm.getPackageInfo(launcherPackageName, 0);

            if (!launcherPackage.versionName.equals("BuildFromAndroidStudio")) {

                Assert.assertEquals("Launcher version doesn't match tests version",

                        pm.getPackageInfo(context.getPackageName(), 0).getLongVersionCode(),

                        launcherPackage.getLongVersionCode());

            }

        } catch (PackageManager.NameNotFoundException e) {

            throw new RuntimeException(e);

        }

        mLauncherPid = 0;

        // Disable app tracker

        AppLaunchTracker.INSTANCE.initializeForTesting(new AppLaunchTracker());