Test migration to jest by hand

Apparently using regular expressions is way easier.

test/minBy/minBy.js

@@ -0,0 +1,2 @@
+const minBy = (arr, fn) => Math.min(...arr.map(typeof fn === 'function' ? fn : val => val[fn]));
+module.exports = minBy;

test/minBy/minBy.test.js

@@ -0,0 +1,15 @@
+const expect = require('expect');
+const minBy = require('./minBy.js');
+
+
+  test('minBy is a Function', () => {
+  expect(minBy).toBeInstanceOf(Function);
+});
+  test('Produces the right result with a function', () => {
+  expect(minBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], o => o.n), 2).toBe()
+});
+  test('Produces the right result with a property name', () => {
+  expect(minBy([{ n: 4 }, { n: 2 }, { n: 8 }, { n: 6 }], 'n'), 2).toBe()
+});
+  
+