====== The testing pyramide ======

[[https://martinfowler.com/articles/practical-test-pyramid.html|Source]]

The [[software_testing|testing]] pyramide is a conceptual model that shows how to correctly distribute [[unit_test|unit]], [[integration_test|integration]] and [[end_to_end_test|end-to-end]] tests. 

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==== Main takeaways ====

  - The more high-level you get, less tests you should have.
  - Write tests with different granularity.


==== Benefits ====

  - Following the model helps finding mistakes on low levels.
  - Saves money.
  - Ensures a balance between speed of feedback and complete verification.

==== Typical mistakes ====

  * ice cream cone (reversed pyramid)
  * high-level tests repeat low-level ones.
  * isolation break: unit tests access the database or network and become integration testing.