because of best practices

I see, thank you, I must've somehow deleted a part of it then by mistake, I didn't know it's possible, thank you

There must be an issue with the tests in javascript,
the test as follows:
Test.assertEquals(pigIt,'igPay atinlay siay oolcay')
but it does not call the function?
The "failed" test result is:
Expected: 'igPay atinlay siay oolcay', instead got: [Function: pigIt]
I checked and multiple "solutions" didn't work.