chore(ci): upload coverage to codecov.io (#251)

Co-authored-by: Serge Klochkov <3175289+slvrtrn@users.noreply.github.com>

Author: loyd

.github/workflows/ci.yml

@@ -90,6 +90,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
+
+      - name: Install cargo-llvm-cov
+        uses: taiki-e/install-action@cargo-llvm-cov
+
       - name: Start ClickHouse in Docker
         uses: hoverkraft-tech/compose-action@v2.2.0
         with:
@@ -98,10 +102,12 @@ jobs:
 
       - run: rustup show active-toolchain -v
       # TODO: --workspace won't be required after splitting workspace and the main crate
-      - run: cargo test --workspace
-      - run: cargo test --workspace --no-default-features
-      - run: cargo test --workspace --features uuid,time
-      - run: cargo test --workspace --all-features
+      - name: Run tests
+        run: cargo llvm-cov test --workspace --no-report
+      - name: Run tests without default features
+        run: cargo llvm-cov test --workspace --no-report --no-default-features
+      - name: Run tests with all features
+        run: cargo llvm-cov test --workspace --no-report --all-features
 
       - name: Run tests with ClickHouse Cloud
         env:
@@ -112,8 +118,18 @@ jobs:
         # Temporary runs tests with `cloud_` prefix only until we validate that the rest of the tests are working
         # `https_errors` should assert ClickHouse Cloud connection errors without enabled TLS features
         run: |
-          cargo test cloud_ --features rustls-tls -- --nocapture
-          cargo test https_errors -- --nocapture
+          cargo llvm-cov test cloud_ --no-report --features rustls-tls -- --nocapture
+          cargo llvm-cov test https_errors --no-report -- --nocapture
+
+      - name: Generate code coverage
+        run: cargo llvm-cov report --codecov --output-path codecov.json
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          files: codecov.json
+          token: ${{ secrets.CODECOV_TOKEN }}
+          slug: ClickHouse/clickhouse-rs
+          fail_ci_if_error: true
 
   miri:
     needs: build

README.md

@@ -4,8 +4,9 @@ Official pure Rust typed client for ClickHouse DB.
 
 [![Crates.io][crates-badge]][crates-url]
 [![Documentation][docs-badge]][docs-url]
-[![License][license-badge]][license-url]
 [![Build Status][actions-badge]][actions-url]
+[![License][license-badge]][license-url]
+[![Codecov][codecov-badge]][codecov-url]
 
 [crates-badge]: https://img.shields.io/crates/v/clickhouse.svg
 [crates-url]: https://crates.io/crates/clickhouse
@@ -15,6 +16,8 @@ Official pure Rust typed client for ClickHouse DB.
 [license-url]: https://github.com/ClickHouse/clickhouse-rs/blob/main/LICENSE-MIT
 [actions-badge]: https://github.com/ClickHouse/clickhouse-rs/actions/workflows/ci.yml/badge.svg
 [actions-url]: https://github.com/ClickHouse/clickhouse-rs/actions/workflows/ci.yml
+[codecov-badge]: https://codecov.io/gh/ClickHouse/clickhouse-rs/graph/badge.svg?token=3MBXXYL53L
+[codecov-url]: https://codecov.io/gh/ClickHouse/clickhouse-rs
 
 * Uses `serde` for encoding/decoding rows.
 * Supports `serde` attributes: `skip_serializing`, `skip_deserializing`, `rename`.