Codecov in CI

.github/workflows/coverage.yml

@@ -0,0 +1,87 @@
+name: Coverage
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  coverage:
+    runs-on: ubuntu-latest
+    services:
+      postgres:
+        image: postgres:12
+        env:
+          POSTGRES_USER: postgres
+          POSTGRES_PASSWORD: password
+          POSTGRES_DB: postgres
+        ports:
+          - 5432:5432
+    env:
+      SQLX_VERSION: 0.6.2
+      SQLX_FEATURES: postgres,rustls
+      CARGO_TERM_COLOR: always
+
+    steps:
+      - name: Checkout repository,
+        uses: actions/checkout@v3
+
+      - name: Cache dependencies
+        id: cache-dependencies
+        uses: actions/cache@v2
+        with:
+          path: |
+            ~/.cargo/registry
+            ~/.cargo/git
+            target
+          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
+
+      - name: Install Rust
+        run: rustup update nightly
+
+      - name: Massage sqlx features env variable...
+        run: |
+          TMP=${{ env.SQLX_FEATURES }}
+          SQLX_FEATURES_CACHE="${TMP//,/_}"
+          echo "SQLX_FEATURES_CACHE=${SQLX_FEATURES_CACHE}" >> $GITHUB_ENV
+
+      - name: Cache sqlx-cli
+        uses: actions/cache@v2
+        id: cache-sqlx
+        with:
+          path: |
+            ~/.cargo/bin/sqlx
+            ~/.cargo/bin/cargo-sqlx
+          key: ${{ runner.os }}-sqlx-${{ env.SQLX_VERSION }}-${{ env.SQLX_FEATURES_CACHE }}
+
+      - name: Install sqlx-cli 
+        uses: actions-rs/cargo@v1
+        if: steps.cache-sqlx.outputs.cache-hit == false
+        with:
+          command: install 
+          args: >
+            sqlx-cli
+            --force
+            --version=${{ env.SQLX_VERSION }}
+            --features=${{ env.SQLX_FEATURES }}
+            --no-default-features
+            --locked
+
+      - name: Migrate database
+        run: |
+          sudo apt-get install libpq-dev -y
+          SKIP_DOCKER=true ./scripts/init_db.sh
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
+      - name: Generate code coverage
+        run: cargo +nightly llvm-cov --doctests --all-features --workspace --lcov --output-path lcov.info
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          #token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
+          files: lcov.info
+          fail_ci_if_error: true