Migrated tests to jest

Used jest-codemods to migrate, will have to pass everything by hand before we can merge.

test2/formatDuration/formatDuration.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const formatDuration = require('./formatDuration.js');
+
+test('Testing formatDuration', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof formatDuration === 'function').toBeTruthy();
+  expect(formatDuration(1001)).toBe('1 second, 1 millisecond');
+  expect(formatDuration(34325055574)).toBe('397 days, 6 hours, 44 minutes, 15 seconds, 574 milliseconds');
+});