Deno example of tests that should pass.

readme.md

See denoland/std#349

assertSetsTest.ts

import { runTests, test } from "https://deno.land/std@v0.3.4/testing/mod.ts";
import {
	assertNotEquals,
	assertEquals,
	equal
} from "https://deno.land/std@v0.3.4/testing/asserts.ts";

/**
 * determines if the two sets are equal order shouldn't matter
 */
function equalsIncludingSet(setA, setB) {
	if (setA instanceof Set || setB instanceof Set) {
		if (!(setA instanceof Set && setB instanceof Set)) {
			return false;
		}
		if (setA.size !== setB.size) {
			return false;
		}
		for (const item of setA) {
			if (!setB.has(item)) {
				return false;
			}
		}
		return true;
	}
	return equal(setA, setB);
}

function assertEqualsSet(setA, setB) {
	if (!equalsIncludingSet(setA, setB)) {
		throw new Error("SET A NOT EQUAL TO SET B");
	}
}

function assertNotEqualsSet(setA, setB) {
	if (equalsIncludingSet(setA, setB)) {
		throw new Error("SET A IS EQUAL TO SET B");
	}
}

test(function withNormalAssertions() {
	const setA = new Set([1, 2, 3]);
	const setB = new Set([1]);
	const setC = new Set([3, 2, 1]);
	assertEquals(setA, setC);
	assertNotEquals(setA, setB);
});

test(function withModifiedAssertionsForSets() {
	const setA = new Set([1, 2, 3]);
	const setB = new Set([1]);
	const setC = new Set([3, 2, 1]);
	assertEqualsSet(setA, setC);
	assertNotEqualsSet(setA, setB);
});

runTests();