This GitHub Action allows you to compare two files based on a tolerance, output the result to a file and send various notifications (comment on a linked GitHub issue/pull request, create a Check Run, ...), etc.

The following shows how to compare two files, making sure only additions happened, and output the difference to a file.

name: "build-test"
on: [push]

jobs:
  test_something:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v1
    - uses: LouisBrunner/[email protected]
      with:
        old: file1.txt
        new: file2.txt
        mode: addition
        tolerance: better
        output: out.txt

See the examples workflow for more details and examples (and see the associated runs to see how it will look like).

Required The first file to compare

Required The second file to compare

Required The method used to measure the tolerance, can be either addition (addition are better) or deletion (deletion are better)

Required The tolerance to check the diff for, depends on mode, can be either (examples given with mode = deletion) better (only deletion), mixed-better (more deletion than addition), same (stay the exact same), mixed (same amount of lines but not the same), mixed-worse (more addition than deletion) or worse (only addition)

Optional The path where to output the diff (as well as on the console)

Optional Your GITHUB_TOKEN, required when using notify_check and/or notify_issue

Optional Will create a GitHub Check Run if 'true' is specified, requires token to be given as well

Optional Will create a comment in the linked issue if 'true' is specified, requires token to be given as well

Contains a boolean ('true' or 'false') representing if the check passed or not

Contains the output of the diff

• Add a mode for the tolerance so addition can be better than deletion (which isn't possible now)