Final fixes, all tests running

test/runPromisesInSeries/runPromisesInSeries.test.js

@@ -7,5 +7,5 @@ test('runPromisesInSeries is a Function', () => {
 });
 const delay = d => new Promise(r => setTimeout(r, d));
 test('Runs promises in series', () => {
-  runPromisesInSeries([() => delay(100), () => delay(200).then(() => expect(true).toBeTruthy()));
+  runPromisesInSeries([() => delay(100), () => delay(200).then(() => expect(true).toBeTruthy())]);
 });