name: python coverage

on:
  push:
    branches:
      - master
  pull_request: {}

jobs:
  coverage:
    runs-on: ubuntu-latest

    # Not intended for forks.
    if: github.repository == 'optuna/optuna-dashboard'

    steps:
    - name: Checkout
      uses: actions/checkout@v3

    - name: Setup Python
      uses: actions/setup-python@v4
      with:
        python-version: '3.10'
        architecture: x64

    - name: Install dependencies
      run: |
        python -m pip install --progress-bar off --upgrade pip setuptools
        pip install --progress-bar off .[optional]
        pip install --progress-bar off .[test]
        pip install --progress-bar off "optuna>=3.0.0"
        pip install --progress-bar off .
        echo 'import coverage; coverage.process_startup()' > sitecustomize.py
    - name: Tests
      env:
        PYTHONPATH: .  # To invoke sitecutomize.py
        COVERAGE_PROCESS_START: .coveragerc  # https://coverage.readthedocs.io/en/6.4.1/subprocess.html
        COVERAGE_COVERAGE: yes  # https://github.com/nedbat/coveragepy/blob/65bf33fc03209ffb01bbbc0d900017614645ee7a/coverage/control.py#L255-L261
      run: |
        coverage run --source=optuna_dashboard -m pytest python_tests
        coverage combine
        coverage xml
    - name: Upload coverage to Codecov
      uses: codecov/codecov-action@v3
      with:
        token: ${{ secrets.CODECOV_TOKEN }}
        file: ./coverage.xml
        fail_ci_if_error: false