What is the problem this feature would solve?

In Jest and Vitest we can write tests like this:

import { describe, expect, test } from 'vitest'
import { myFunctionUnderTest } from './sum.js'

//                 👇 - direct reference to the function, not a string. 
describe(myFunctionUnderTest, () =>{
  test('adds 1 + 2 to equal 3', () => {
    expect(myFunctionUnderTest(1, 2)).toBe(3)    
  })
})

And this will output like this:

 ✓ src/sum.test.js (1 test) 1ms
   ✓ myFunctionUnderTest > adds 1 + 2 to equal 3

This is a nice bit of convenience for writing tests -

1. Saves having to write a string ourselves
2. If we rename the function, the test description will automatically be updated

What is the feature you are proposing to solve the problem?

Support passing functions as description parameter in the same manner.

What alternatives have you considered?

No response