using espresso for fast and reliable feedback

Using Espresso for Fast and Reliable Feedback Web: perfectomobile.com Twitter: @perfectomobile

Using Espresso for Fast and Reliable Feedback

Embedding quality across the Android lifecycle

Web: perfectomobile.com Twitter: @perfectomobile


● Session is being recorded

● Email once presentation is posted

● Questions and conversation○ Twitter: #justletmecode○ WebEx chat panel○ Q&A at the end of the webinar

Housekeeping

Paul BruceDeveloper Advocate

Perfecto


What We’ll Cover

1. Introductions to Espresso testing framework○ The pattern and some code samples○ Comparing Espresso and Appium

2. Improving build verification in CI○ Testing types and schedules○ Espresso on real devices in Jenkins

3. Pros & Cons of DIY lab setup○ Common pitfalls and requirements for success

4. Accelerating the feedback loop


Poll: Which UI testing technologies do you use?

● Espresso● Appium● Robotium● UI Automator● Other


Introductions to the Espresso test framework

IUsing Espresso for Fast and Reliable Feedback



Automated UI Testing for Android apps

● Creates folder for tests (androidTests)

● Adds Espresso libraries as dependencies


On the surface, a fluent UI testing pattern

onData(ObjectMatcher).DataOptions.perform(ViewAction).check(ViewAssertion)

Find ItAct on ItCheck It

onView(Matcher).perform(ViewAction).check(ViewAssertion)


Espresso syntax in a nutshellFind

onView(withId(R.id.bill_value))

onView(allOf(withId(R.id.bill_value),isDisplayed()

))

// see ViewMatchers.

Act

.perform(replaceText(“25.44”))

.perform(click(), typeText(“...”)

)

.perform(pressBackButton())

.perform(swipeUp())

// see ViewActions.

Check

.check(matches(isDisplayed()))

.check(matches(not(isDisplayed())

))

.check(doesNotExist())

.check(matches(withText(“...”)))

// see ViewAssertions.


Espresso in Android Studio


How ADB andinstrumentationwork together


How does the alternative (Appium) work?


Pros/cons on both sidesEspresso/XCTest WebDriver...

Instrumented Black-box

Code+ XPath+

Ecosystem IndependentUpgrades

Execution

Object Locators

N YCross-platform

Depends+ Depends-Stability

bit.ly/oss-test-choices


Espresso avoids sleep() creep


Espresso avoids XPath delta breakage

Strings tell your compiler NOTHING!!!

No refactoring support

Can you write them properly...yes! Do you?

None of these things apply to compilable statements (i.e. R…).


More Espresso getting started resources:

● Intro to Espresso and Spoonbit.ly/2kN4DAZ

● Vogella - Espresso Tutorialbit.ly/2l0y6lY

● Watch everything from Chiu Ki Chan on YouTube

● Tweet / email me with questions! @paulsbruce [email protected]

http://bit.ly/2kN4DAZ

http://bit.ly/2kN4DAZ

http://bit.ly/2l0y6lY

http://bit.ly/2l0y6lY

mailto:[email protected]


Improving build verification in CI

2Using Espresso for Fast and Reliable Feedback



Feedback loops across the pipeline


Complete feedback at the right times


Local Build Commit → Build Full / Nightly

Unit / New UI Integration / Smoke Full Regression

Fake Real Real

Static Mocks SandboxAPI

Tests

Hardware

A simple recipe for fast and complete feedback

< 2min < 20min < 2hr

Espresso in Jenkins


Pros & cons of DIY lab setup




Devices: local or cloud?

Local Build Merge → Build Full / Nightly

✓ ! ✘

! ✘ ✘

✓ ✓ ✓Cloud Lab

Emulator

Local Lab


Less hunting, more coding

● How many devices per developer?● In sync with the market?● Spares, adapters?● Storage/hosting/power costs?● Monitoring?● Security?

● High-volume automated testing● Big data from CI● Results retention & collaboration


Complete quality across the entire lifecycle


Accelerating the feedback loop




Build verification, smoke tests

x5 per day * 4 critical platforms

Regression &end-to-end testing

nightly * 16 platforms + conditions

fast & complete feedback

Parallel testing requires a reliable, scalable lab


Fast feedback means a lab that fits into your workflow

bit.ly/perfecto-slack


A complete view of build quality


What We’ve Covered Today

1. Introductions to Espresso testing framework○ The pattern and some code samples○ Comparing Espresso and Appium

2. Improving build verification in CI○ Testing types and schedules○ Espresso on real devices in Jenkins

3. Pros & Cons of DIY lab setup○ Common pitfalls and requirements for success

4. Accelerating the feedback loop

4 Ways to Speed Up Your Mobile/Web App Daily Grind Web: perfectomobile.com Twitter: @perfectomobile

Q&A .