.. _CODECOV:

Code Coverage
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Code coverage measures used and unused code lines, statements, branches, etc. Depending on the programming language this
is measured by instrumenting the code/binary and running the program, it's test cases or simulating the code. In
generate code coverage is a measure of test coverage. Unused code is not (yet) covered by tests.

The code coverage metric in percent is a ratio of used code versus all possibly usable code. A coverage of <100%
indicates unused code. This can be dead code (unreachable) or untested code (⇒ needs more test cases).


.. rubric:: Code Coverage Kinds

* Coverage

  * Code coverage

    * statement coverage / line coverage
    * branch coverage
    * expression coverage
    * toggle coverage
    * state coverage (of state machines)
    * transition coverage (of state machines)

  * Functional coverage
  * Documentation coverage
  * Test coverage