Assert that options (text) in drop down are unique

Question

I’m creating test in cypress using typescript, I’m not sure how to assert that all options in drop down are unique - I found bug where is situation that values are duplicated multiple times - it’s a drop down with search results. I’m not sure how check that each value in this drop down is unique. Can you help me or direct how to do it in the easiest and best way?

Answer 1

Get the text and add to a array

Convert array to set and compare the size

Set will have only unique elements (Removes the duplicates)

So if length of set and array are different , it means there where duplicate entries in the array.

var arr = [55, 44, 65, 55];
var set = new Set(arr);
console.log(set.size === arr.length);
set.forEach(x => {console.log(x)});