name: coverage

on:
  push:
    branches: [ master ]
  pull_request:
    branches: [ master ]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  CARGO_TERM_COLOR: always

jobs:
  grcov:
    name: Coverage
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os:
          - ubuntu-latest
        toolchain:
          - nightly
        cargo_flags:
          - "--all-features"
    steps:
      - name: Checkout source code
        uses: actions/checkout@v2

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: ${{ matrix.toolchain }}
          override: true

      - name: Install grcov
        uses: actions-rs/install@v0.1
        with:
          crate: grcov
          version: latest
          use-tool-cache: true

      - name: Test
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: --all --no-fail-fast ${{ matrix.cargo_flags }}
        env:
          CARGO_INCREMENTAL: "0"
          RUSTFLAGS: '-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort -Cdebug-assertions=off'
          RUSTDOCFLAGS: '-Zprofile -Ccodegen-units=1 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort -Cdebug-assertions=off'

      - name: Generate coverage data
        id: grcov
        # uses: actions-rs/grcov@v0.1
        run: |
          grcov target/debug/ \
              --branch \
              --llvm \
              --source-dir . \
              --output-path lcov.info \
              --ignore='/**' \
              --ignore='C:/**' \
              --ignore='../**' \
              --ignore-not-existing \
              --excl-line "#\\[derive\\(" \
              --excl-br-line "#\\[derive\\(" \
              --excl-start "#\\[cfg\\(test\\)\\]" \
              --excl-br-start "#\\[cfg\\(test\\)\\]" \
              --commit-sha ${{ github.sha }} \
              --service-job-id ${{ github.job }} \
              --service-name "GitHub Actions" \
              --service-number ${{ github.run_id }}
      - name: Upload coverage as artifact
        uses: actions/upload-artifact@v2
        with:
          name: lcov.info
          # path: ${{ steps.grcov.outputs.report }}
          path: lcov.info

      - name: Upload coverage to codecov.io
        uses: codecov/codecov-action@v1
        with:
          # file: ${{ steps.grcov.outputs.report }}
          file: lcov.info
          fail_ci_if_error: true