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test pyramid

📱 CT-MAT ⚙️ CT-TAS 📗 CTFL

Official ISTQB Definition

A graphical model representing the relationship of the amount of testing per level, with more at the bottom than at the top.

3 Ways to Think About It

💡
The Quick Take

A model showing you should have many unit tests, fewer integration tests, and even fewer UI tests.

🔍
Look Closer

The idea that fast, cheap tests at the bottom support slower, expensive tests at the top.

🎯
The Bottom Line

A triangle diagram: lots of small tests at the base, few big tests at the peak.

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