Increase Code Coverage

Code coverage percentage is determined by Code Covered and Executed/Code Covered (Executed and Not Executed). By increasing the code covered and executed or decreasing the total code covered, the code coverage percentage is increased.

The following tips may be useful in helping you increase coverage of your code.

Review Test Cases

  • Ensure the tests you are running mirror how the code is to be used. Considering all cases can lead to more tests, but also more coverage.
  • Create tests for each use case, as well as corner cases. Avoid repeated testing of code already tested.

Automate Tests

  • Use utilities to automate the testing process. Investigate tools that can read your source code and identify inputs, outputs, and program flow to develop relevant tests.

Remove Dead or Redundant Code

  • Getting rid of code that does not need to be tested will decrease total code and increase coverage.
  • To find dead code, inspect the sections of code that are not covered after a couple of testing runs and determine if this code is really needed.
  • To find redundant code, you may need a tool to search for repeating blocks. Then determine if the code blocks can be consolidated.
© 2024 Microchip Technology, Inc.
Notice: ARM and Cortex are the registered trademarks of ARM Limited in the EU and other countries.
Information contained on this site regarding device applications and the like is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. MICROCHIP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND WHETHER EXPRESS OR IMPLIED, WRITTEN OR ORAL, STATUTORY OR OTHERWISE, RELATED TO THE INFORMATION, INCLUDING BUT NOT LIMITED TO ITS CONDITION, QUALITY, PERFORMANCE, MERCHANTABILITY OR FITNESS FOR PURPOSE. Microchip disclaims all liability arising from this information and its use. Use of Microchip devices in life support and/or safety applications is entirely at the buyer's risk, and the buyer agrees to defend, indemnify and hold harmless Microchip from any and all damages, claims, suits, or expenses resulting from such use. No licenses are conveyed, implicitly or otherwise, under any Microchip intellectual property rights.