Github actions decline action if fails

There is a super convenient way to build, test and aggregate the outcome of changes of some branch before merging using pull requests.

Its common to create a pull request and trigger a workflow doing the checks. Just add "pull_request:" to reuse your existing workflow, to build and test your changes.

name: Android CI
on:
  push:
    branches: [ main ]
  pull_request:

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v1

      - name: set up JDK 11
        uses: actions/setup-java@v1
        with:
          java-version: 11

      # Runs ktlint
      - name: Lint
        run: ./gradlew ktlintCheck

      # Execute unit tests
      - name: Unit Test
        run: ./gradlew testDebugUnitTest

Jobs are executed in parallel. Of course that is faster. Common use case is a matrix that defines required test targets, e.g. os versions, node or Java versions.