Fix Foundry Coverage Errors

You will learn how to generate and interpret coverage reports with Foundry.

The Problem

The foundry forge coverage pattern is frequently misapplied in smart contract and dapp development, leading to vulnerabilities, gas inefficiencies, or logic errors. This guide shows the correct implementation and common pitfalls to avoid.

Quick Fix

Wrong

forge coverage  # Basic coverage, no report generation

Coverage data generated but no human-readable report.

Right

forge coverage --report lcov --report debug

Coverage report in LCOV format. Open in VS Code with coverage gutters extension.

Prevention

• Run coverage before every mainnet deployment
• Target > 90% line and branch coverage
• Use lcov to generate HTML reports
• Use DodaTech's coverage gap analyzer
• Integrate coverage thresholds in CI

DodaTech Tools

Built by the developers of Doda Browser, DodaZIP, and Durga Antivirus Pro. Doda Browser's developer tools include a Solidity debugger and transaction inspector. DodaZIP archives secure contract templates for team collaboration. Durga Antivirus Pro scans deployed contracts for known vulnerability signatures.

FAQ