Everything of CI/CD in Kyash Android

circleci japan meetup: mobile edition

Transcript

1. Everything of CI/CD
   in Kyash Android
   Keisuke Kobayashi / kobakei
   CircleCI Japan Meetup: Mobile Edition
   

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2. About me
   • Keisuke Kobayashi
   • GitHub, Qiita: kobakei
   • Twitter: kobakei122
   • Kyash, Inc
   • Using CircleCI for 3+ years
   

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3. Kyash Android
   

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4. Kyash Android
   • Full Kotlin
   • About 40 activities + Bottom Navigation
   • Architecture
   • MVVM + Layered architecture
   • Library
   • Rx, Dagger, Data binding, Retrofit & OkHttp, Picasso,
   Orma, Gson
   

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5. Continuous Integration
   

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6. Testing
   • Unit testing
   • UI testing
   

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7. Testing
   • Unit testing
   • UI testing
   

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8. Unit testing
   • Robolectric + Mockito
   • No emulator = fast
   • Focus on ViewModel and Model. 

   Activity and Fragment are not target.
   • Easy to inject mock objects by Dagger 2
   • Run by git push on Circle CI
   

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9. mockito-kotlin
   • mockito extension for Kotlin
   • `when` problem
   • NPE on any
   • Easy to read & write
   

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10. @Test
    fun doAction_doesSomething(){
    /* Given */
    val mock = mock {
    on { getText() } doReturn "text"
    }
    val classUnderTest = ClassUnderTest(mock)
    /* When */
    classUnderTest.doAction()
    /* Then */
    verify(mock).doSomething(any())
    }
    

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11. jacoco-android-gradle-plugin
    • Add gradle tasks to run unit test and code
    coverage
    • Need to exclude classes generated by kapt
    • Data binding, ORM, Parcelable, etc
    • No badge now
    • Codecov, Coveralls
    

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12. ktlint-gradle
    • Coding style checker and formatter for Kotlin
    • Default style is official style from kotlinlang.org
    • Not same as Android Studio default setting
    • Override: ktlint —apply-to-idea
    • Run style check on Circle CI
    

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13. cookpad/license-tools-plugin
    • Generate license page by gradle task
    • Check licenses on Circle CI
    • Avoid missing license
    

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14. Testing
    • Unit testing
    • UI testing
    

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15. UI testing
    • Espresso + UI automator
    • Use Espresso basically
    • Use UI automator to OS/other app UI (ex. permission
    dialog)
    • Don’t run on CI due to long exec time
    • Run before release to confirm important flows don’t degrade
    • ex. Sign up flow
    

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16. Mock in UI testing
    • MockWebServer of Retrofit
    • Unlike Mockito, JSON parse can be tested
    • Share MockWebServer object between
    Application class and test classes
    • Change API response at every test case
    

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17. Firebase Test Lab
    • Still experimental
    • Run UI testing on OS x device matrix
    • In parallel
    • Video recording in testing
    • 5 or 10 tests/day in free plan
    • Run before release manually?
    

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18. Continuous Delivery
    

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19. Crashlytics
    • Share the latest apk to team
    • master branch = debug build
    • Development endpoint
    • Debug screen with debot
    • Deploy at every git push (10~ times / day)
    • release/1.2.3 branch = beta build
    • Production endpoint
    • Deploy at code freeze
    

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20. Google Play
    • gradle-play-publisher
    • Gradle wrapper of Google Play Developer API
    • Need to set up Google API console
    • Can publish as alpha, beta and staging rollout
    • Triggered by GitHub Release (git tag)
    • However CircleCI 2.0 doesn't support tag…
    

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21. Workaround
    • Add CircleCI 1.0 deployment block
    deployment:
    fake_deploy_for_cci2:
    tag: /.*/
    commands:
    - echo "make tags run in 2.0"
    

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22. Version name and code
    // App version
    def versionMajor = 1
    def versionMinor = 11
    def versionPatch = 2
    // version code
    def vc = 0
    if (System.getenv("CIRCLE_TAG") != null) {
    // tag = release build
    vc = versionMajor * 10000 + versionMinor * 100 + versionPatch
    } else if ("true" == System.getenv("CI")) {
    // no tag but CI = dev build
    vc = System.getenv("CIRCLE_BUILD_NUM") as Integer
    } else {
    // otherwise = local build
    vc = versionMajor * 10000 + versionMinor * 100 + versionPatch
    }
    

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23. CircleCI
    

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24. Like
    • Can start by free event if private repo
    • Many users
    • We can search YAML file on GitHub
    • Kind support
    • ex. Memory limit of my project has been
    increased before
    

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25. Dislike
    • OOM
    • Slow build
    • Official docs is still poor
    

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26. Dislike (CircleCI 2.0)
    • OOM Fixed?
    • Slow build Fixed
    • Official docs is still poor
    

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27. CircleCI 1.0 -> 2.0
    Build time 60% down
    

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28. Breakdown (Total 5:30)
    

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29. Breakdown (Total 5:30)
    Unit testing
    Deploy
    

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30. I want…
    • Trigger by git tag
    • Firebase Test Lab on CircleCI 2.0
    • Docs
    • There is only docs for CircleCI 1.0
    • May need Docker image?
    

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31. Thanks!
    

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