feat: reinstall and configure codecov from scratch

- Remove old coverage files and configuration
- Add comprehensive .codecov.yml with 80% target coverage
- Create coverage.sh script for local testing with HTML/LCOV output
- Update CI workflow with proper grcov configuration
- Add coverage documentation and update .gitignore
- Exclude main.rs, lib.rs, openapi.rs from coverage analysis

Author: tnsc

.codecov.yml

@@ -1,4 +1,21 @@
+coverage:
+  status:
+    project:
+      default:
+        target: 80%
+        threshold: 1%
+    patch:
+      default:
+        target: 80%
+
 ignore:
-  - "src/lib.rs"
   - "src/main.rs"
-  - "src/openapi.rs"
+  - "src/lib.rs"
+  - "src/openapi.rs"
+  - "target/"
+  - "tests/"
+
+comment:
+  layout: "reach,diff,flags,tree"
+  behavior: default
+  require_changes: false

.github/workflows/ci.yml

@@ -35,7 +35,19 @@ jobs:
         run: |
           cargo test --verbose
           # Generate coverage report
-          grcov . --binary-path ./target/debug/ -s . -t lcov -o ./coverage.lcov
+          grcov . \
+            --binary-path ./target/debug/deps/ \
+            -s . \
+            -t lcov \
+            --branch \
+            --ignore-not-existing \
+            --ignore '../*' \
+            --ignore "/*" \
+            --ignore 'target/*' \
+            --ignore 'src/main.rs' \
+            --ignore 'src/lib.rs' \
+            --ignore 'src/openapi.rs' \
+            -o coverage.lcov
 
       - name: Upload coverage reports to Codecov
         uses: codecov/codecov-action@v5

.gitignore

@@ -1,15 +1,19 @@
 # Rust
 /target/
-**/*.rs.bk
+Cargo.lock
 
-# Env variables
+# Coverage
+coverage/
+*.profraw
+coverage.lcov
+
+# Environment
 .env
 
-# Coverage Reports
-/coverage-report/
+# IDE
+.vscode/
+.idea/
 
-# Others
+# OS
 .DS_Store
-.idea/
-.vscode/
-notes
+Thumbs.db

COVERAGE.md

@@ -0,0 +1,39 @@
+# Code Coverage Setup
+
+## Local Coverage Testing
+
+Run coverage locally:
+```bash
+./coverage.sh
+```
+
+This will:
+- Clean previous coverage data
+- Run tests with coverage instrumentation
+- Generate HTML report at `coverage/index.html`
+- Generate LCOV report at `coverage.lcov`
+- Open the HTML report in your browser
+
+## CI/CD Integration
+
+Coverage is automatically generated and uploaded to Codecov on every push/PR via GitHub Actions.
+
+## Configuration Files
+
+- `.codecov.yml` - Codecov configuration with 80% target coverage
+- `coverage.sh` - Local coverage generation script
+- `.github/workflows/ci.yml` - CI pipeline with coverage upload
+
+## Ignored Files
+
+The following files are excluded from coverage:
+- `src/main.rs` - Application entry point
+- `src/lib.rs` - Library root
+- `src/openapi.rs` - OpenAPI documentation
+- `target/` - Build artifacts
+- `tests/` - Test files
+
+## Requirements
+
+- `grcov` - Install with `cargo install grcov`
+- Rust nightly toolchain (for coverage instrumentation)

coverage.ps1

@@ -1,6 +1,56 @@
 #!/bin/bash
-# For grcov:
+
+# Clean previous coverage data
 cargo clean
-CARGO_INCREMENTAL=0 RUSTFLAGS="-C instrument-coverage" LLVM_PROFILE_FILE="cargo-test-%p-%m.profraw" cargo test
-grcov . --binary-path ./target/debug/ -s . -t html -o ./coverage-report
-open ./coverage-report/index.html
+rm -rf coverage/
+rm -f *.profraw
+
+# Set environment variables for coverage
+export CARGO_INCREMENTAL=0
+export RUSTFLAGS="-C instrument-coverage"
+export LLVM_PROFILE_FILE="cargo-test-%p-%m.profraw"
+
+# Run tests with coverage
+echo "Running tests with coverage..."
+cargo test
+
+# Generate coverage report
+echo "Generating coverage report..."
+grcov . \
+    --binary-path ./target/debug/deps/ \
+    -s . \
+    -t html \
+    --branch \
+    --ignore-not-existing \
+    --ignore '../*' \
+    --ignore "/*" \
+    --ignore 'target/*' \
+    --ignore 'src/main.rs' \
+    --ignore 'src/lib.rs' \
+    --ignore 'src/openapi.rs' \
+    -o coverage/
+
+# Generate lcov for Codecov
+grcov . \
+    --binary-path ./target/debug/deps/ \
+    -s . \
+    -t lcov \
+    --branch \
+    --ignore-not-existing \
+    --ignore '../*' \
+    --ignore "/*" \
+    --ignore 'target/*' \
+    --ignore 'src/main.rs' \
+    --ignore 'src/lib.rs' \
+    --ignore 'src/openapi.rs' \
+    -o coverage.lcov
+
+echo "Coverage report generated at coverage/index.html"
+echo "LCOV report generated at coverage.lcov"
+
+# Open coverage report if on macOS/Linux with GUI
+if command -v xdg-open > /dev/null; then
+    xdg-open coverage/index.html
+elif command -v open > /dev/null; then
+    open coverage/index.html
+fi