Merge pull request #4 from nekoraw/master

Add code coverage and upload to Codecov jobs

.github/workflows/rust.yml

@@ -10,8 +10,17 @@ env:
 jobs:
   test:
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v4
     - name: Run tests
       run: cargo test --verbose
+    - name: Install cargo-llvm-cov
+      uses: taiki-e/install-action@cargo-llvm-cov
+    - name: Generate code coverage
+      run: cargo llvm-cov --all-features --codecov --output-path codecov.json --ignore-filename-regex main
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v3
+      with:
+        token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
+        files: codecov.json
+        fail_ci_if_error: true