Migrated tests to jest

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

test2/fibonacci/fibonacci.js

@@ -0,0 +1,6 @@
+const fibonacci = n =>
+Array.from({ length: n }).reduce(
+(acc, val, i) => acc.concat(i > 1 ? acc[i - 1] + acc[i - 2] : i),
+[]
+);
+module.exports = fibonacci;

test2/fibonacci/fibonacci.test.js

@@ -0,0 +1,9 @@
+const expect = require('expect');
+const fibonacci = require('./fibonacci.js');
+
+test('Testing fibonacci', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof fibonacci === 'function').toBeTruthy();
+  expect(fibonacci(6)).toEqual([0, 1, 1, 2, 3, 5]);
+});