This is on my index.js file in VSC
describe('appendCat(name)', function () {
it('appends a cat to the cats array and returns a new array, leaving the cats array unchanged', function () {
expect(appendCat("Broom")).to.have.ordered.members(["Milo", "Otis", "Garfield", "Broom"]);
expect(cats).to.have.ordered.members(["Milo", "Otis", "Garfield"]);
});
});
I am supposed to append a cat to the cats array leaving the cats array unchanged.
I have no idea how to write the function for this
You mean something like this?
This will spread the cats array, plus add a new element to it named "Broom", but the initial cats array will not be changed.
describe('appendCat(name)', function () {
it('appends a cat to the cats array and returns a new array, leaving the cats array unchanged', function () {
expect(appendCat("Broom")).to.have.ordered.members([...cats, "Broom"]);
expect(cats).to.have.ordered.members(["Milo", "Otis", "Garfield"]);
});
});
You can do like this
[...cats, "name of cat"]