Android UI Testing with Espresso

Slides for the talk I gave at Droidcon Spain 2013 & Droidcon Italy 2014 about UI testing with Google's Espresso testing API for Android

Code for this session can be found here: https://github.com/xrigau/droidcon-android-espresso

Transcript

1. UI testing with Espresso
   Xavi Rigau
   

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2. Who am I?
   ✦ +Xavi Rigau – @xrigau – github.com/xrigau – xavi@novoda.com
   ✦ 23. Born in Barcelona – Living in London
   ✦ Started working on Android in 2010
   ✦ Currently working @Novoda – github.com/novoda
   

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3. Novoda
   

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4. We’re hiring!
   ✦ Software craftsmen
   ✦ Passionate people
   ✦ Open source enthusiasts
   ✦ Positions available in London and Berlin
   ✦ Send us an email: info@novoda.com
   

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5. Agenda
   ✦ What’s Espresso?
   ✦ Why Espresso?
   ✦ API Overview
   ✦ Practice!
   

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6. What’s Espresso?
   http://adnatomy.wordpress.com/2013/03/05/brand-positioning-nespresso/
   not
   http://www.memegen.com/meme/wtuw41
   

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7. What’s Espresso?
   ✦ “a fun little Android UI test API” – Google
   ✦ Presented during Google Test Automation Conference 2013 (1)
   ✦ Open Source – code.google.com/p/android-test-kit
   ✦ Allows writing painless UI tests with a nice interface
   ✦ Compatible with Android API 8, 10 & 15 - 19
   1. GTAC 2013: Espresso – youtu.be/T7ugmCuNxDU
   

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8. ✦ Easy to set up (1)
   ✦ Fluid API (high level, readable tests)
   ✦ Extensible (based on Matchers – create your own!)
   ✦ Fast execution (Smart Waiting – no need to sleep())
   Why Espresso?
   1. Not in Maven central, use Novoda’s repo: github.com/novoda/public-mvn-repo/tree/master/releases
   http://en.wikipedia.org/wiki/Buddy_Christ
   

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9. API Overview
   onView(Matcher)
   onData(Matcher)
   withId()/withText()/etc
   is()/instanceOf()/etc
   click()/typeText()/etc
   isDisplayed()/withText()/etc
   perform(ViewAction)
   check(ViewAssertion) matches(Matcher super View>)
   

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10. API Overview
    ✦ Examples:
    • onView(withId(R.id.some_id)).check(matches(isDisplayed()));
    • onView(withId(R.id.other_id)).perform(click());
    • onData(is(someObject)).perform(click());
    

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11. Demo time!
    ✦ Espresso – $ git clone https://code.google.com/p/android-test-kit/
    ✦ droidcon-android-espresso – github.com/xrigau/droidcon-android-espresso
    ✦ $ git clone git@github.com:xrigau/droidcon-android-espresso.git
    ✦ Write some tests! (Look at the “Next steps” section in the Readme file)
    http://memegenerator.net/instance/27270106
    

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12. Bonus: Espresso 1.1
    ✦ Adds swipe left & right actions for ViewPagers
    ✦ Multi-window support! (for Dialog, AutoCompleteTextView, …)
    ✦ Contrib Library (depends on the support library - not in core)
    • Adds support for DrawerLayout
    ✦ Other improvements, bug fixes and optimisations
    Release notes: https://code.google.com/p/android-test-kit/wiki/ReleaseNotes
    

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13. Thanks!
    http://imgace.com/pic/2011/09/unhelpful-high-school-teacher-meme/
    

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