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Travis CI

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Samuel Villaescusa Vinader edited this page Jul 17, 2020 · 3 revisions

Description

Travis CI is a CI/CD tool that provides easy testing and deployments by making this process automatically.

Travis configuration

Travis initialization

language: android
jdk: oraclejdk8
env:
  global:
    - ANDROID_TARGET=android-24
    - ANDROID_ABI=armeabi-v7a

android:
  components:
    - tools
    - platform-tools
    - build-tools-29.0.3
    - android-28
    - extra-google-m2repository
    - extra-android-m2repository
    - extra-android-support
    - $ANDROID_TARGET
    - sys-img-${ANDROID_ABI}-${ANDROID_TARGET}

licenses:
  - 'google-gdk-license-.+'
  - 'android-sdk-preview-license-.+'

As you can see, this is the first step of the CI process, where I'm telling Travis that I want a Virtual machine with Android and jdk8 that will be used to compile the project.

Then I ask for a series of needed componentes like android tools, sdks, Android Virtual devices etc and also giving the ability to accept licenses when installing things.

Travis stages

stages:
  - name: lint
  - name: tests

jobs:
  include:
    - stage: lint
      script:
        - ./gradlew detektLint;
        - ./gradlew lintDebug
    - stage: tests
      script:
        - ./gradlew testDebugUnitTest
        - echo no | android create avd --force -n test -t $ANDROID_TARGET --abi $ANDROID_ABI --device 'Nexus 4'
        - emulator -avd test -no-window -skin 768x1280 &
        - android-wait-for-emulator
        - adb shell setprop dalvik.vm.dexopt-flags v=n,o=v
        - ./gradlew connectedAndroidTest
        - ./gradlew jacocoTestReport
      after_success:
        - bash <(curl -s https://codecov.io/bash)

before_deploy:
  - git config --local user.name "PexegoUva"
  - git config --local user.email "samuelvv22@gmail.com"
  - export TRAVIS_TAG=${TRAVIS_TAG:-$(./gradlew -q printVersionName)}
  - echo $TRAVIS_TAG
  - git tag $TRAVIS_TAG

This part is about steps of the CI process:

  1. First of all, we have the lint step, where detekt and lintDebug will be executed to ensure code quality and no bad smells.
  2. Secondly, we have test step, where we will run unit and connected tests by executing an Android Virtual device.
  3. Third, when tests are OK and code-coverage has been generated, I send results to Codecov to be able to get useful information about test health.

PD: I'm doing tests on only one device because in the current state of the project I think it is enough. I have picked the last supported version (API 24) and a old device (like Nexus 4) to ensure the app works on low device.

To improve this part we can make use of Firebase lab that will run Acceptance test in a cluster of devices from all the supported APIs and models.

#### Travis deployments

deploy:
  - provider: releases
    api_key: "$GITHUB_API_KEY"
    file: app/build/outputs/apk/debug/*
    file_glob: true
    skip_cleanup: true
    prerelease: true
    on:
      branch: master

This last part is about CD (continuos delivery). Will run at the end of the process is everything was OK, and will generate a Release with the provided APK, then will upload that to Github project.

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