Individual skill
improving-tests
Improve test design, speed, and coverage with behavior-focused tests, useful seams, characterization tests, TDD, and test refactoring. Use when improving tests, optimizing slow suites, adding coverage, refactoring brittle tests, or removing test waste. NOT for fixing production bugs (use fixing-code), or reviewing non-test code quality (use reviewing-code).
src/skills/improving-tests/SKILL.md
Source commit 5ad5b8f0df027cf694ccbeb3311830890f01d582
What was checked
- Matches the observed repository HEAD
- Yes
- Scanner rules are current
- No
- Repository scan complete
- No
- Skill scan complete
- No
- Observed behavior
- Not checked yet
- Last checked
- Nov 7, 2026
These are observations at the recorded commit, not a guarantee of safety. Review the source before running it.
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Repository context
- Repository stars (not skill ratings)
- 38
- Repository last updated
- Oct 25, 2026
- License
- MIT
Observed agent integration: No specific integration evidence. Standard SKILL.md installation does not imply verified compatibility.
- ai-coding Repository topic
- claude-code Repository topic
- code-review Repository topic
- developer-tools Repository topic
- codex Repository topic
- pi-coding-agent Repository topic
- agent-skills Repository topic
- codex-cli Repository topic
- coding-agents Repository topic
- cursor Repository topic
- testing Derived category
- design Derived category
Files and excerpt
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Browse files
.agentbundler/targets/claude.jsonasset · 1,565 bytesSKILL.mdcore · 4,238 bytesreferences/csharp.mddoc · 733 bytesreferences/go.mddoc · 1,371 bytesreferences/java-kotlin.mddoc · 981 bytesreferences/python.mddoc · 2,001 bytesreferences/rust.mddoc · 1,064 bytesreferences/typescript.mddoc · 1,660 bytesreferences/web.mddoc · 839 bytes
Read excerpt
# Test Improvement
Make tests catch real behavior regressions without blocking safe changes. Suite
latency is a quality attribute; coverage is a signal, not the goal.
The optional coding-posture plugin owns general test-first and refactoring
procedure. This skill adds test-design and language-specific guidance; do not
load both merely to repeat a checklist.
Without write access, return proposed changes (file, change, reason) instead of
applying them.
Read the reference for each language in scope; it covers test patterns and
suite speed. Use the matching `writing-<lang>` skill for toolchain commands.