Testing Pyramid

Definitions

1. A testing strategy model shaped like a pyramid: a broad base of fast, cheap unit tests, a middle layer of integration tests, and a narrow top of slow, expensive end-to-end tests — emphasizing that most coverage should come from the lower layers.

   In plain English: A guideline that says you should have lots of small, quick tests and only a few big, slow ones.

   Example: "We inverted the testing pyramid and now have 500 Selenium tests and 12 unit tests — CI takes an hour."

Related Terms

• E2E Testing
• Integration Testing
• Regression Test
• System Test
• Test Assertion
• Test Harness
• Test Plan
• Test Strategy
• Testability