What is test coverage? - Deepstash

What is test coverage?

Code coverage is the amount of code covered by a test. Increasing coverage beyond 90% seems to have little continued correlation with lower bug density.

There are two kinds of coverage: 

  • Code coverage: how much of the code is exercised, and 
  • Case coverage: how many of the use-case scenarios are covered by the test suites.  

Coverage reports identify code-coverage weaknesses, not case coverages weaknesses.

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