geninq/src/functions/at.test.ts

A JavaScript version of the Linq library for Generators

import { It, ItThrows } from "../test-utils";
import "./at";

It("Gets an element at specific point in the sequence", (s) => s.at(2), 3);
It(
  "Returns undefined if the element does not exist",
  (s) => s.at(4, "or-default"),
  undefined
);
ItThrows(
  "Throws for element that does not exist",
  (s) => s.at(4),
  new Error("Index 4 does not exist in sequence.")
);