I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke.
📰 Dev.to · Sergei Peleskov
Learn what happens when you let AI write 10 features without reviewing the code and how it affects test coverage and code quality
Action Steps
- Run an experiment with Claude Code on a clean FastAPI template
- Provide 10 feature prompts to Claude Code without reviewing the diffs
- Accept every suggested command without testing
- Analyze the effects on test coverage and code quality
- Evaluate the trade-offs between AI-generated code and manual review
Who Needs to Know This
Developers and DevOps teams can benefit from understanding the potential risks and consequences of relying heavily on AI-generated code
Key Insight
💡 AI-generated code can significantly impact test coverage and code quality if not reviewed properly
Share This
🚨 What happens when AI writes code without review? 🚨 Test coverage: 90% → 0% Lines added: +607 across 15 files 🤯
Key Takeaways
Learn what happens when you let AI write 10 features without reviewing the code and how it affects test coverage and code quality
Full Article
Title: I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke.
URL Source: https://dev.to/greza_dev/i-let-claude-code-write-10-features-without-reading-any-diffs-heres-what-broke-4iko
Published Time: 2026-04-24T15:41:57Z
Markdown Content:
# I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke. - DEV Community
[Skip to content](https://dev.to/greza_dev/i-let-claude-code-write-10-features-without-reading-any-diffs-heres-what-broke-4iko#main-content)
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[Sergei Peleskov](https://dev.to/greza_dev)
Posted on Apr 24
# I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke.
[#ai](https://dev.to/t/ai)[#claude](https://dev.to/t/claude)[#programming](https://dev.to/t/programming)[#webdev](https://dev.to/t/webdev)
I ran an experiment on a clean FastAPI template: 10 feature prompts to Claude Code in a row, accept every diff without reading, run every suggested command. No code review, no test runs in between.
33 minutes later:
* Test coverage: 90% → 0%
* Lines added: +607 across 15 files
* The code
URL Source: https://dev.to/greza_dev/i-let-claude-code-write-10-features-without-reading-any-diffs-heres-what-broke-4iko
Published Time: 2026-04-24T15:41:57Z
Markdown Content:
# I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke. - DEV Community
[Skip to content](https://dev.to/greza_dev/i-let-claude-code-write-10-features-without-reading-any-diffs-heres-what-broke-4iko#main-content)
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[Sergei Peleskov](https://dev.to/greza_dev)
Posted on Apr 24
# I Let Claude Code Write 10 Features Without Reading Any Diffs. Here's What Broke.
[#ai](https://dev.to/t/ai)[#claude](https://dev.to/t/claude)[#programming](https://dev.to/t/programming)[#webdev](https://dev.to/t/webdev)
I ran an experiment on a clean FastAPI template: 10 feature prompts to Claude Code in a row, accept every diff without reading, run every suggested command. No code review, no test runs in between.
33 minutes later:
* Test coverage: 90% → 0%
* Lines added: +607 across 15 files
* The code
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