Migrated tests to jest

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

test6/unzipWith/unzipWith.js

@@ -0,0 +1,10 @@
+const unzipWith = (arr, fn) =>
+arr
+.reduce(
+(acc, val) => (val.forEach((v, i) => acc[i].push(v)), acc),
+Array.from({
+length: Math.max(...arr.map(x => x.length))
+}).map(x => [])
+)
+.map(val => fn(...val));
+module.exports = unzipWith;

test6/unzipWith/unzipWith.test.js

@@ -0,0 +1,11 @@
+const expect = require('expect');
+const unzipWith = require('./unzipWith.js');
+
+test('Testing unzipWith', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof unzipWith === 'function').toBeTruthy();
+  expect(
+    unzipWith([[1, 10, 100], [2, 20, 200]], (...args) => args.reduce((acc, v) => acc + v, 0))
+  ).toEqual([3, 30, 300]);
+});