Xavi Rigau presented on UI testing with Espresso. Espresso is an Android UI testing framework that allows writing easy to set up, fluid, and fast UI tests. It has a high-level API based on matchers that makes tests readable. Espresso tests are extensible through custom matchers and do not require calls to sleep due to its smart waiting functionality. The presentation demonstrated the Espresso API and encouraged attending to try out writing sample tests on their own.

1. UI testing with Espresso
Xavi Rigau

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

3. Novoda

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

5. What’s Espresso?

6. What’s Espresso?
not

7. What’s Espresso?
not
http://adnatomy.wordpress.com/2013/03/05/brand-positioning-nespresso/

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

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

10. Why Espresso?
✦
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())
1. Not in Maven central, use Novoda’s repo: github.com/novoda/public-mvn-repo/tree/master/releases

11. Why Espresso?
()
✦
Easy to set up (1)
✦
Fluid API (high level, readable tests)
✦
Extensible (based on Matchers – create your own!)
https://svpply.com/item/258647/Felt__Wire_Shop_No_Sleep_Till_Brooklyn
http://alltheragefaces.com/face/happy-epic-win
✦
Fast execution (Smart Waiting – no need to sleep())
1. Not in Maven central, use Novoda’s repo: github.com/novoda/public-mvn-repo/tree/master/releases

12. Why Espresso?
()
✦
Easy to set up (1)
✦
Fluid API (high level, readable tests)
✦
Extensible (based on Matchers – create your own!)
https://svpply.com/item/258647/Felt__Wire_Shop_No_Sleep_Till_Brooklyn
http://alltheragefaces.com/face/happy-epic-win
✦
Fast execution (Smart Waiting – no need to sleep())
1. Not in Maven central, use Novoda’s repo: github.com/novoda/public-mvn-repo/tree/master/releases

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

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

15. Practice!
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Espresso – $ git clone https://code.google.com/p/android-test-kit/
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droidcon-android-espresso – github.com/xrigau/droidcon-android-espresso
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$ git clone git@github.com:xrigau/droidcon-android-espresso.git
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Write some tests! (Look at the “Next steps” section in the Readme file)

16. Practice!
✦
Espresso – $ git clone https://code.google.com/p/android-test-kit/
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droidcon-android-espresso – github.com/xrigau/droidcon-android-espresso
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$ 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

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