Allow taking class names in describe

[JoshuaKGoldberg]

Suppose you have a class under test:

class Adder {
    add(a, b) {
        return a + b;
    }
}

...and a describe block of tests:

describe("Adder", () => {
    it("adds two numbers", () => {
        expect(new Adder().add(1, 2)).toBe(2);
    });
});

If Adder is renamed, refactoring tools won't generally catch that the string in the test file should also be updated. We'd have to do that manually. ☹️

A solution to this could be to allow taking class/function names instead of the string. On environments that support it, there's a .name property string that can be used directly. On environments that don't (IE!), it can be parsed from the function name.

describe(Adder, () => {
    it("adds two numbers", () => {
        expect(new Adder().add(1, 2)).toBe(2);
    });
});

[github-actions]

This issue has been automatically locked since there has not been any recent activity after it was closed. Please open a new issue for related bugs.
Please note this issue tracker is not a help forum. We recommend using StackOverflow or our discord channel for questions.