name: CI

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

jobs:

  coverage:
    name: Coverage
    timeout-minutes: 30
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2.3.4

      - uses: actions-rs/toolchain@v1.0.7
        with:
          toolchain: nightly
          override: true
          profile: minimal
          components: llvm-tools-preview

      - name: Install rustfilt symbol demangler
        run: |
          cargo install rustfilt

      - name: Rerun tests for coverage
        env:
          RUSTFLAGS: -Zinstrument-coverage -C link-dead-code -C debuginfo=2
          LLVM_PROFILE_FILE: "${{ github.workspace }}/test.%p.profraw"
          ZEBRA_SKIP_NETWORK_TESTS: 1
        run: |
          cargo test
          cargo test --no-run --message-format=json | jq -r "select(.profile.test == true) | .filenames[]" | grep -v dSYM - > filenames.txt

      - name: Merge coverage data
        run: |
          $(rustc --print target-libdir)/../bin/llvm-profdata merge test.*.profraw -o test.profdata

      - name: Generate detailed html coverage report for github artifact
        run: |
          $(rustc --print target-libdir)/../bin/llvm-cov show -format=html -ignore-filename-regex=".*/.cargo/registry/.*" -ignore-filename-regex=".*/.cargo/git/.*" -ignore-filename-regex=".*/.rustup/.*" -Xdemangler=rustfilt -show-instantiations -output-dir=./coverage -instr-profile=./test.profdata $(printf -- "-object %s " $(cat filenames.txt))

      - uses: actions/upload-artifact@v2
        with:
          name: coverage
          path: ./coverage

      - name: Generate lcov coverage report for codecov
        run: |
          $(rustc --print target-libdir)/../bin/llvm-cov export -format=lcov -instr-profile=test.profdata $(printf -- "-object %s " $(cat filenames.txt)) > "lcov.info"

      - name: Upload coverage report to Codecov
        uses: codecov/codecov-action@v1.5.0