Coverage On Diff

A tool that uses an instanbul json code coverage report and git diff to calculate the code coverage on new lines added

Installation:

``shell
npm i coverage-on-diff --save-dev
`

Usage:

`shell
terminal > ./coverageOnDiff --help
Run diff against current code coverage
Usage: cli.js -d [file]

Options:
--version Show version number [boolean]
--diff, -d diff file to compare code coverage to [string] [required]
--coverage, -c instanbul json code coverage report to use against diff
[string] [default: "./coverage/coverage-final.json"]
--path, -p relative root dir for code coverage
[string] [default: "./"]
--report, -r type of report
[array] [choices: "text", "text-summary"] [default: "text-summary"]
--stmt, -s percentage threshold for stmt coverage [number] [default: 80]
--branch, -b percentage threshold for branch coverage [number] [default: 0]
--ignore, -i ignore threshold checks [boolean]
--help Show help [boolean]
`

Reports

The final report will look similar to below:

_text-summary view_
`shell
./coverageOnDiff -d ~/dev/branch.diff
`
!image of terminal 1


_text view_
`shell
./coverageOnDiff -d ~/dev/branch.diff -r text
``
!image of terminal 2

Threshold test will run by default with 80% statement coverage and 0% branch coverage