Cargo Llvm Cov

cargo-llvm-cov Plugin

Cargo subcommand for LLVM source-based code coverage for Rust. Generate and report code coverage for Rust projects with minimal configuration.

Commands

Coverage Reporting

• cargo-llvm-cov coverage report — Generate code coverage report

Utility

• cargo-llvm-cov _ _ — Passthrough to cargo llvm-cov CLI

Usage Examples

• "Generate coverage report"
• "Rust code coverage"
• "Export LCOV coverage"
• "Measure test coverage"

Installation

cargo install cargo-llvm-cov

Requires Rust toolchain with cargo and rustc.

Examples

# Generate coverage report
 cargo-llvm-cov coverage report

# Generate HTML report
 cargo-llvm-cov coverage report --html --output-path coverage/

# Generate LCOV report
 cargo-llvm-cov coverage report --lcov --output-path lcov.info

# Coverage for specific package
 cargo-llvm-cov coverage report --package my-package

# Any cargo llvm-cov command with passthrough
 cargo-llvm-cov _ _ --html
 cargo-llvm-cov _ _ test
 cargo-llvm-cov _ _ --json

Key Features

• LLVM - LLVM source-based coverage
• HTML - HTML reports
• LCOV - LCOV format
• JSON - JSON output
• Text - Text output
• Package - Per-package coverage
• Workspace - Workspace support
• CI/CD - CI/CD friendly
• Minimal - Minimal config
• Fast - Fast instrumentation

Notes

• Requires Rust toolchain
• Uses LLVM instrumentation
• Great for CI coverage gates
• Supports workspace projects