Test_coverage.yml

name: Check coverage

on:
  pull_request:
    branches:
      - master
      - main
  push:
    branches:
      - master
      - main

jobs:
  compare-coverage:
    name: Compare with previous coverage
    runs-on: ubuntu-latest
    steps:
      - name: Setup git
        uses: actions/checkout@v3

      - name: Setup python
        uses: actions/setup-python@v4
        with:
          python-version: 3.9

      - name: Switch to main branch
        uses: actions/checkout@v3
        with:
          ref: ${{ github.event.repository.default_branch }}

      - name: Install previous python dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r web/requirements.app.txt
          pip install -r web/requirements.dev.txt

      - name: Get previous coverage
        id: get_coverage
        run: |
          coverage run -m pytest --envfile web.env.example
          coverage json
          export PERCENT_COVERED=$(python -c "import json;print(json.load(open('coverage.json'))['totals']['percent_covered'])")
          echo "percent_covered=$PERCENT_COVERED" >> $GITHUB_OUTPUT

      - name: Switch to branch to merge
        uses: actions/checkout@v3
        with:
          fetch-depth: 0
          ref: ${{ github.event.pull_request.head.sha }}

      - name: Install new python dependencies
        run: |
          python -m pip install --upgrade pip
          pip install -r web/requirements.app.txt
          pip install -r web/requirements.dev.txt

      - name: Check that coverage at least equals to main coverage
        run: pytest --envfile web.env.example --cov --cov-fail-under=${{ steps.get_coverage.outputs.percent_covered }}