Coverage is a measurement used in software testing to describe the degree to which the source code is tested. There are three basic types of coverage techniques as shown in the following figure:
- Statement coverage: This coverage ensures that each line of source code has been executed and tested.
- Decision coverage: This coverage ensures that every decision (true/false) in the source code has been executed and tested.
- Path coverage: In this coverage, we ensure that every possible route through a given part of the code is executed and tested.