name: Coverage

on:
  pull_request:
    types: [opened, synchronize, reopened]
  push:
    branches:
      - master

jobs:
  build_and_test:
    strategy:
      fail-fast: false
      matrix:
        version:
          - stable

    name: ${{ matrix.version }} - x86_64-unknown-linux-gnu
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v2
      - name: ⚡ Cache
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Install ${{ matrix.version }}
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.version }}-x86_64-unknown-linux-gnu
          profile: minimal
          override: true

      - name: Generate coverage file
        if: matrix.version == 'stable' && (github.ref == 'refs/heads/master' || github.event_name == 'pull_request')
        uses: actions-rs/tarpaulin@v0.1
        with:
          version: '0.18.2'
          args: '-t 1200'
        env:
          # GIT_HASH is dummy value. I guess build.rs is skipped in tarpaulin
          # execution so this value is required for preventing meta tests from
          # panicking
          GIT_HASH: 8e77345f1597e40c2e266cb4e6dee74888918a61

      - name: Upload to Codecov
        if: matrix.version == 'stable' && (github.ref == 'refs/heads/master' || github.event_name == 'pull_request')
        uses: codecov/codecov-action@v1