Quality Unit Testing for Rust

Write tests that catch real bugs and provide deployment confidence.

Core Principles

Quality over coverage: Tests should catch real bugs, not just boost percentages.

Quick Reference

Naming: test_<function>_<scenario>_<expected>

#[test]
fn test_process_payment_insufficient_funds_returns_error()

#[tokio::test]
async fn test_withdraw_valid_amount_decreases_balance()