Firebase Remote Config and Test Lab

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#LaunchpadDev Remote Config & Test Lab Rebecca Franks Google Developer Expert - Android / Senior Android Developer @ DVT @riggaroo riggaroo.co.za

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Agenda • Remote Config • Setup & Basic Usage • Conditions • A/B Testing • Staged Rollouts • Test Lab • Robo Tests • Instrumentation Tests

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Remote Config #LaunchpadDev

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● Key / Value Pairs saved on Firebase server ● Change behaviour at runtime ● No app update required Remote Config

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Features • Quickly deploy changes • Customise your app for segments of user base • Run A/B Tests • Free!

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Available for Android iOS

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Firebase Server Setup

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Android Setup Project Level build.gradle: buildscript { // ... dependencies { // ... classpath 'com.google.gms:google-services:3.0.0' } }

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Android Setup App Level app/build.gradle: dependencies { // ... compile 'com.google.firebase:firebase-core:9.4.0' compile 'com.google.firebase:firebase-config:9.4.0' } // At the bottom apply plugin: 'com.google.gms.google-services'

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Android Setup • Download google-services.json • Place in app/ folder. • Create remote config defaults file - res/xml/ remote_config.xml welcome_message Hello User!

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Initialise Firebase Remote Config remoteConfig = FirebaseRemoteConfig.getInstance(); FirebaseRemoteConfigSettings config = new FirebaseRemoteConfigSettings.Builder() .setDeveloperModeEnabled(BuildConfig.DEBUG) .build(); remoteConfig.setConfigSettings(config); remoteConfig.setDefaults(R.xml.remote_config);

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Fetch remoteConﬁg.fetch(CACHE_TIME_SECONDS).addOnComplete Listener(new OnCompleteListener() { }); @Override public void onComplete(@NonNull Task task) { if (task.isSuccessful()) { Log.d(TAG, "Fetch Succeeded"); remoteConﬁg.activateFetched(); } else { Log.d(TAG, "Fetch Failed"); } displayWelcomeMessage(); }

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Display void displayWelcomeMessage(){ String helloMessage = remoteConﬁg.getString("welcome_message"); greetingTextView.setText(helloMessage); }

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Demo Android app fetching single remote config value

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Types you can store on Remote Config • Strings • Integers • Booleans • Long • Double • Byte Arrays

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Conditions • Powerful decision- making server • Target a group of app instances • Made up of one or more rules that must evaluate to true

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Different greeting per platform?

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Demo - No code changes!

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Types of Conditionals • OS Type • App ID • Device in Region or Country • App Version • Language • Audience from Analytics • Random Percentile Priority? Can be reordered on “Conditions” tab.

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A/B Testing & Feature Rollout • Experimenting with your UI • Different audiences receive different UI

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A/B Testing - Server Setup

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A/B Testing - Android Setup String experiment = conﬁg.getString("experiment_variant"); FirebaseAnalytics.getInstance(this) .setUserProperty("Experiment", experiment); if (experiment.equals("variant_a")) { //.. } else if (experiment.equals("variant_b")) { //... } else { //.. }

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Demo A B No Experiment

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Analytics Log your events + track in the Firebase Console buttonCheckout.setOnClickListener(new View.OnClickListener() { @Override public void onClick(ﬁnal View view) { //.. } }); ﬁrebaseAnalytics.logEvent(“CheckoutClicked”, new Bundle());

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A/B Testing - Analytics

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Filter - Variant_A

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Experiment A - Winner! A

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Gradual Feature Rollouts • Leverage “User in Random Percentile” feature • Gradually increase the value of the percentage • Rollout to more customers as you gain confidence

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Create stage rollout condition

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Create config using that condition

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Gradually increase value

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Test Lab #LaunchpadDev

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What is Firebase Test Lab? • Run tests at Googles Device Farm • Virtual Devices + Physical Devices • Robo Tests & Custom Instrumentation Tests • Pay per hour

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Runs on Android

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Why run tests on Firebase? • History of results • Logs attached to each test • Screenshots & videos • Don’t have to manage your own device farm

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Robo Test • Random clicking around in your application + recording results • No code changes required to run a Robo Test • Uses Monkey Runner

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Running Monkey Locally $ adb shell monkey -p your.package.name -v 500 Command line:

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Running Monkey on Firebase

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Viewing Robo Test Results

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Instrumentation Tests • Need to be writing test code • Espresso • Robotium • UIAutomator

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Run Instrumentation Tests Locally • Device / Emulator attached • Espresso: ./gradlew connectedAndroidTest

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Options for running tests • Firebase Console • Command Line - Using gcloud API • Android Studio

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Running Instrumentation Tests in Android Studio

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Viewing Test Results

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Recap •Remote Config •Getting setup •Using remote config •A/B Testing + Gradual Roll outs •Test Lab •Robo Tests •Instrumentation tests

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Thank you! Rebecca Franks Google Developer Expert - Android @riggaroo / +RebeccaFranksSA riggaroo.co.za #LaunchpadDev

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Links Firebase Remote Config - https://firebase.google.com/docs/remote-config/ Firebase Test Lab - https://firebase.google.com/docs/test-lab/ Testing Support Library - https://developer.android.com/topic/libraries/ testing-support-library/index.html Demo Remote Config Project - https://github.com/riggaroo/remote-config- demo-ssa-launchpad-2016 Demo Test Lab Project - https://github.com/googlesamples/android- testing/tree/master/ui/uiautomator/BasicSample