Changed Code Coverage

Changed Code Coverage allows you to focus on the test coverage of the code changes in this commit.

Dimensions

Added (File) Line Coverage

Calculation Logic:

1. git diff between two commits to get the difference files => difference line numbers (may include comments, blank lines)
2. Traverse the branchMap, fnMap, statementMap of the changed file’s coverageMap to determine if they include the difference line numbers
3. Covered definition: The branchMap, fnMap, statementMap containing the difference line numbers are all covered

Calculation Formula:

Added (File) Line Coverage = Covered (File) Lines / Total Added (File) Lines

Added Branch Coverage

Calculation Logic:

1. git diff between two commits to get the difference files => difference line numbers
2. Traverse the branchMap of the changed file’s coverageMap to determine if it includes the difference line numbers
3. Covered definition: The branchMap containing the difference line numbers is covered

Calculation Formula:

Added Branch Coverage = Covered Branches / Total Added Branches

Added Function Coverage

Calculation Logic:

1. git diff between two commits to get the difference files => difference line numbers
2. Traverse the fnMap of the changed file’s coverageMap to determine if it includes the difference line numbers
3. Covered definition: The fnMap containing the difference line numbers is covered

Calculation Formula:

Added Function Coverage = Covered Functions / Total Added Functions

Added Statement Coverage

Calculation Logic:

1. git diff between two commits to get the difference files => difference line numbers
2. Traverse the statementMap of the changed file’s coverageMap to determine if it includes the difference line numbers
3. Covered definition: The statementMap containing the difference line numbers is covered

Calculation Formula:

Added Statement Coverage = Covered Statements / Total Added Statements