workflow for coverage

.github/workflows/coverage.yml

@@ -0,0 +1,59 @@
+name: Coverage
+
+on: [push]
+
+jobs:
+  linux:
+    name: Update Code Coverage
+    runs-on: ubuntu-20.04
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Install rust nightly toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: nightly
+          profile: minimal
+          override: true
+
+      - name: Install grcov
+        run: cargo install grcov
+
+      # Test prerequisites
+      - name: Start databases in test containers
+        run: docker-compose -f docker-compose.ci.yml up -d
+      - name: Check running containers
+        run: docker ps -a  
+      - name: Check logs
+        run: docker logs odbc-api_mssql_1
+      - name: Install SQL Server Driver
+        run: |
+          curl https://packages.microsoft.com/keys/microsoft.asc | apt-key add -
+          curl https://packages.microsoft.com/config/ubuntu/20.04/prod.list > /etc/apt/sources.list.d/mssql-release.list
+          apt-get update
+          ACCEPT_EULA=Y apt-get install -y msodbcsql17
+          ln -s /opt/microsoft/msodbcsql17/lib64/libmsodbcsql-17.*.so.* /opt/microsoft/msodbcsql17/lib64/libmsodbcsql-17.so
+        shell: sudo bash {0}
+      - name: Copy test expectations
+        run: cp odbcsv/tests/list-drivers-dev.txt odbcsv/tests/list-drivers.txt
+
+      - name: Run grcov
+        env:
+          PROJECT_NAME: "odbc_api"
+          RUSTFLAGS: "-Zprofile -Ccodegen-units=1 -Cinline-threshold=0 -Copt-level=0 -Clink-dead-code -Coverflow-checks=off -Zpanic_abort_tests -Cpanic=abort"
+          RUSTDOCFLAGS: "-Cpanic=abort"
+          CARGO_INCREMENTAL: 0
+        run: |
+          cargo build --verbose
+          cargo test --verbose
+
+          zip -0 cov.zip $(find . -name "$PROJECT_NAME*.gc*" -print)
+          grcov cov.zip -s . -t lcov --llvm --ignore-not-existing --ignore "/*" -o lcov.info
+
+      - name: Push grcov results to Coveralls via GitHub Action
+        uses: coverallsapp/github-action@v1.0.1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          path-to-lcov: "lcov.info"