shift-left-testing
✓Move testing activities earlier in the development lifecycle to catch defects when they're cheapest to fix. Use when implementing TDD, CI/CD, or early quality practices.
Installation
SKILL.md
Cost of Defects by Phase | Phase | Relative Cost | Example |
| Requirements | 1x | Fix doc: 30 min | | Design | 5x | Redesign: few hours | | Development | 10x | Code fix: 1 day | | Testing | 20x | Fix + retest: 2 days | | Production | 100x | Hotfix + rollback + investigation |
| 1 | Unit tests in PR | Before merge | | 2 | TDD | Before implementation | | 3 | BDD/Example Mapping | During refinement | | 4 | Risk Analysis | During design |
Move testing activities earlier in the development lifecycle to catch defects when they're cheapest to fix. Use when implementing TDD, CI/CD, or early quality practices. Source: proffesor-for-testing/agentic-qe.
Facts (cite-ready)
Stable fields and commands for AI/search citations.
- Install command
npx skills add https://github.com/proffesor-for-testing/agentic-qe --skill shift-left-testing- Category
- </>Dev Tools
- Verified
- ✓
- First Seen
- 2026-02-01
- Updated
- 2026-02-18
Quick answers
What is shift-left-testing?
Move testing activities earlier in the development lifecycle to catch defects when they're cheapest to fix. Use when implementing TDD, CI/CD, or early quality practices. Source: proffesor-for-testing/agentic-qe.
How do I install shift-left-testing?
Open your terminal or command line tool (Terminal, iTerm, Windows Terminal, etc.) Copy and run this command: npx skills add https://github.com/proffesor-for-testing/agentic-qe --skill shift-left-testing Once installed, the skill will be automatically configured in your AI coding environment and ready to use in Claude Code or Cursor
Where is the source repository?
https://github.com/proffesor-for-testing/agentic-qe
Details
- Category
- </>Dev Tools
- Source
- skills.sh
- First Seen
- 2026-02-01