text: /* eslint-disable unicorn/require-array-join-separator -- required for testing */
  QUnit.test('Set#join', assert => {
    const { join } = Set.prototype;
  
    assert.isFunction(join);
    assert.arity(join, 1);
    assert.name(join, 'join');
    assert.looksNative(join);
    assert.nonEnumerable(Set.prototype, 'join');
  
    assert.strictEqual(new Set([1, 2, 3]).join(), '1,2,3');
    assert.strictEqual(new Set([1, 2, 3]).join(undefined), '1,2,3');
    assert.strictEqual(new Set([1, 2, 3]).join('|'), '1|2|3');
  
    assert.throws(() => join.call(new Map()), TypeError);
    assert.throws(() => join.call({}), TypeError);
    assert.throws(() => join.call([]), TypeError);
    assert.throws(() => join.call(undefined), TypeError);
    assert.throws(() => join.call(null), TypeError);
  });
  