Build and test swift packages in Azure Pipelines

azure-pipelines.yml

# Build and test swift packages with GitVersion

trigger:
  batch: true
  branches:
    include:
      - master

pool:
  vmImage: 'macos-latest'

steps:
- task: GitVersion@5
  displayName: 'GitVersion'

- script: swift package resolve
  failOnStderr: true
  displayName: 'swift package resolve'

- script: swift build --build-tests
  failOnStderr: true
  displayName: 'swift build --build-tests'

- script: swift test
  # setting failOnStderr: true will cause failure
  # because 'swift test' writes content to stderr
#  failOnStderr: true
  displayName: 'swift test'