---
id: 1900
title: "Everything You Ever Wanted To Know About Test-Case Reduction, But Didn’t Know to Ask"
source_domain: blog.trailofbits.com
source_url: "https://blog.trailofbits.com/2019/11/11/test-case-reduction/"
published_at: "2019-11-11T12:00:11Z"
tags: ["fuzzing", "debugging", "dynamic-analysis", "testing", "trail-of-bits", "test-case-reduction", "deepstate", "delta-debugging"]
phying_url: "https://phying.com/item/1900"
lang: en
---

# Everything You Ever Wanted To Know About Test-Case Reduction, But Didn’t Know to Ask

## Summary

Alex Groce explains test-case reduction: shrinking failing inputs with tools like the DeepState reducer to speed debugging and cut test overhead, plus six reducers worth knowing.

## Intelligence Metadata

- **Sources:** blog.trailofbits.com
- **Published:** 2019-11-11T12:00:11Z
- **Original:** https://blog.trailofbits.com/2019/11/11/test-case-reduction/
- **Phying News:** https://phying.com/item/1900