What are Branch Coverage Metrics?
Branch Coverage Metrics serve to gauge the effectiveness of test coverage by measuring how many branches or decision logics within the source code are covered. Typically expressed as a percentage, the branch coverage percentage is a key indicator of testing thoroughness. The evaluation formula is automated within testing software, where, for example, covering 7 out of 10 branch statements results in coverage of (7/10) * 100, yielding 70%. This indicates that 3 branch statements remain uncovered.
Test Coverage Evaluation
- 70-80% Coverage: If the coverage falls between 70% and 80%, it’s acceptable, but improvements may be needed for overall coverage. This range is often flagged in yellow, signaling a cautionary status.
- Above 80% Coverage: Achieving coverage above 80% is considered efficient, and it is typically highlighted in green, indicating a robust test coverage.
- Below 70% Coverage: If coverage is below 70%, it is not recommended, and efforts should be made to increase coverage. This is usually highlighted in red, signaling inadequate test coverage that requires attention.
What is Branch Coverage in Unit Testing?
Unit Testing is the process of writing the test cases for each developed code file. This testing is carried out by developers. Once the coding part is done, the developers will write the test cases to cover each scenario in the developed file. While running the test suites or test files, we can see there are four parts of coverages. They are Branch Coverages, Statement Coverages, Functions Coverages, and Condition Coverages. It includes the percentage covered for each coverage category. In this article, we will explore the concept of Branch Coverage in Unit Testing.
Table of Content
- What is Branch Coverage in Unit Testing?
- What is the Purpose of Branch Coverage in Unit Testing?
- What are Branch Coverage Metrics?
- Example of Branch Coverage in Unit Testing
- Tools Used for Branch Coverage in Unit Testing
- Advantages of Using Branch Coverage in Unit Testing
- Disadvantages of Using Branch Coverage in Unit Testing
- Conclusion