API: mock source.input.file

I need to prevent my plugin to run on css files inside /node_modules. For that I check for the value of rule.source.input.file.

root.walkDecls(rule => {
    if (rule.source.input.file && rule.source.input.file.indexOf('/node_modules') > 0) {
       return false;
    }
   
    // ...
}

Now I want to do a Jest test with it, but the input.file is always undefined.

How do I mock it?

[ai]

Add this code (replace similar code in the to of test file).

postcss([ plugin(opts) ]).process(input, { from: "test/path" })

[sandrina-p]

Hey it worked!

Thanks 🎉