Purpose

...

• shows a percentage of a source code covered by unit tests;

• shows quality of application;

• shows quality of testing;

• shows how the project is ready for implementation of CI/CD;

• shows if the projects meets the industry quality standards;

• highlights the risk of bugs being detected at a later stage of development;

• helps to understand how much of your source is tested;

• shows the quality of test suite.

TOP-5 problems metric identifies 

1. Lack of focus on Quality

2. Technical and Quality Debt is out of control

3. There is no No Test Plan and/ or Strategy

4. Too many defects are found during manual and / or automated testing

5. Team misbalance (skills ratio)

...

RAG thresholds: Red <= 40%, Amber > 40%, Green > 80 %.Unit Test Coverage for a New Code, % calculation is Identical to Unit Test Coverage but restricted to new/updated source code.

Data source

Data for the metric can be collected from Sonar.