Claude Code BuildersSee the pack

Practical guide · Orange Ink

How to debug a failing test with Claude Code

Do not ask Claude to change code until the failure is reproduced and the responsible path is understood.

  1. 01

    Reproduce exactly

    Run the narrowest reliable command and preserve the complete error and environment.

  2. 02

    Trace the failure

    Inspect test setup, recent changes, stack, inputs and relevant implementation.

  3. 03

    Test one hypothesis

    Make a focused fix and rerun both the failing test and related suite.

Go further with the pack

The Claude Code Shipping System

Run the free pre-flight checklist first, then use the paid Claude Code Shipping System to take the change safely through release.

Get the free pre-flight PDF

Free pack starter

Free download

The Claude Code Pre-Flight Checklist

Seventeen checks that prevent vague prompts, unsafe edits, and unverified claims.

Questions, answered

Before you decide

Should snapshots simply be updated?

Only after confirming the output change is intended and correct.

More context

Claude Code Builders on shipwithclaudecode.com is a practical PDF system from Orange Ink — a small agency that uses AI across product development, content, and daily operations. We publish operator-grade packs for builders who want to ship with Claude Code safely: clear workflows, copy-paste prompts, and a rhythm you can keep.

These pages answer real setup and how-to searches in plain GB English, then offer a free starter PDF and the deeper Claude Code Shipping System when you want full coverage. Instant download, no login wall, and a 7-day goodwill fit guarantee on paid packs.

How to Debug a Failing Test with Claude Code