You mean jasmine tests? I'm not yet familiar with those but I'll see what I can do. Do you think it's sufficient to expect something along the lines of:

expect(dataset.options.fill.target).toBe('origin'); expect(dataset.options.fill.above).toBe('red'); expect(dataset.options.fill.below).toBe('blue'); expect(chart.options.indexAxis).toBe('y');

?

Could do a jasmine test, or build an image test similar to the ones in https://github.com/chartjs/Chart.js/pull/12057/files

Alright, tests added

@LeeLenaleee how do you feel about releasing a 4.4.9 before we merge this?

Yeah that was alos my thought.
Thats why I did not merge these 2 pr's.

I will make a bump pr