geninq/src/functions/distinct.test.ts

A JavaScript version of the Linq library for Generators

import { It } from "../test-utils";
import "./distinct";
import "./array";

It(
  "Will distinct on numbers",
  (g) => g.distinct().array(),
  [1, 2, 3],
  [1, 1, 2, 2, 3, 3]
);
It(
  "Will distinct on strings",
  (g) => g.distinct().array(),
  ["1", "2", "3"],
  ["1", "1", "2", "2", "3", "3"]
);
It(
  "Will distinct on booleans",
  (g) => g.distinct().array(),
  [true, false],
  [true, true, false, false]
);
It(
  "Will distinct on custom comparitor",
  (g) => g.distinct((a, b) => a.test === b.test).array(),
  [{ test: 1 }, { test: 2 }, { test: 3 }],
  [{ test: 1 }, { test: 1 }, { test: 2 }, { test: 2 }, { test: 3 }, { test: 3 }]
);