trigger:
   branches:
     include:
     - master
 pr:
   - "*"
 

 jobs:

 - job: pytest
   strategy:
     # use cross-product when https://github.com/microsoft/azure-pipelines-yaml/issues/20 is solved
     matrix:

       UbuntuPy36:

         python.version: '3.6'

         vmImage: 'ubuntu-latest'

         tox_env: 'py36'

       UbuntuPy37:

         python.version: '3.7'

         vmImage: 'ubuntu-latest'

         tox_env: 'py37'

       UbuntuPy38:

         python.version: '3.8'

         vmImage: 'ubuntu-latest'

         tox_env: 'py38'

       macOSPy36:

         python.version: '3.6'

         vmImage: 'macOS-latest'

         tox_env: 'py36'

       macOSPy37:

         python.version: '3.7'

         vmImage: 'macOS-latest'

         tox_env: 'py37'

       macOSPy38:

         python.version: '3.8'

         vmImage: 'macOS-latest'

         tox_env: 'py38'

       WindowsServerPy36:

         python.version: '3.6'
         vmImage: 'vs2017-win2016'

         tox_env: 'py36'

       WindowsServerPy37:

         python.version: '3.7'
         vmImage: 'vs2017-win2016'

         tox_env: 'py37'

       WindowsServerPy38:

         python.version: '3.8'
         vmImage: 'vs2017-win2016'

         tox_env: 'py38'

 
       WindowsPy36:
         python.version: '3.6'
         vmImage: 'windows-latest'
         tox_env: 'py36'
       WindowsPy37:
         python.version: '3.7'
         vmImage: 'windows-latest'
         tox_env: 'py37'
       WindowsPy38:
         python.version: '3.8'
         vmImage: 'windows-latest'
         tox_env: 'py38'
 

   pool:
     vmImage: '$(vmImage)'

   steps:

   - task: UsePythonVersion@0
     inputs:

       versionSpec: '$(python.version)'

   - script: pip install tox

     displayName: Install tox

   - script: tox -e $(tox_env)-mindeps
     displayName: Run the tests with minimal dependencies

   - script: tox -e clean
     displayName: Clean

   - script: tox -e $(tox_env)-alldeps

     displayName: Run the tests

 - job: coverage

   steps:

   - task: UsePythonVersion@0
     inputs:
       versionSpec: '3.7'
   - script: pip install tox

     displayName: Install tox

   - script: tox -e py37-alldeps,report

     displayName: Run the tests and generate coverage

   - script: |
       pip install codecov
       codecov -t $(CODECOV_TOKEN) -f .coverage.xml

     displayName: Test upload coverage

 - job: pre_commit
   steps:
   - task: UsePythonVersion@0
     inputs:
       versionSpec: '3.7'
   - script: pip install tox

     displayName: Install tox

   - script: tox -e pre-commit

     displayName: Lining tests

 - job: authors_check
   steps:

   - script: |
       MISSING_AUTHORS=$(git shortlog -s HEAD | sed -e "s/^[0-9\t ]*//"| xargs -i sh -c 'grep -q "{}" AUTHORS.md || echo "{} missing from authors"')
       if [ ! -z "$MISSING_AUTHORS" ]; then { echo $MISSING_AUTHORS; exit 1; }; fi
     displayName: 'Authors check'

     continueOnError: true