Migrated tests to jest

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

test6/sampleSize/sampleSize.js

@@ -0,0 +1,9 @@
+const sampleSize = ([...arr], n = 1) => {
+let m = arr.length;
+while (m) {
+const i = Math.floor(Math.random() * m--);
+[arr[m], arr[i]] = [arr[i], arr[m]];
+}
+return arr.slice(0, n);
+};
+module.exports = sampleSize;

test6/sampleSize/sampleSize.test.js

@@ -0,0 +1,14 @@
+const expect = require('expect');
+const sampleSize = require('./sampleSize.js');
+
+test('Testing sampleSize', () => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  expect(typeof sampleSize === 'function').toBeTruthy();
+  const arr = [3,7,9,11];
+  expect(sampleSize(arr).length).toBe(1);
+  expect(sampleSize(arr, 2).every(x => arr.includes(x))).toBeTruthy();
+  expect(sampleSize(arr, 5).length).toBe(4);
+  expect(sampleSize([], 2)).toEqual([]);
+  expect(sampleSize(arr, 0)).toEqual([]);
+});