Test migration to jest by hand

Apparently using regular expressions is way easier.

test/lcm/lcm.js

@@ -0,0 +1,6 @@
+const lcm = (...arr) => {
+const gcd = (x, y) => (!y ? x : gcd(y, x % y));
+const _lcm = (x, y) => x * y / gcd(x, y);
+return [...arr].reduce((a, b) => _lcm(a, b));
+};
+module.exports = lcm;

test/lcm/lcm.test.js

@@ -0,0 +1,10 @@
+const expect = require('expect');
+const lcm = require('./lcm.js');
+
+
+  test('lcm is a Function', () => {
+  expect(lcm).toBeInstanceOf(Function);
+});
+  t.equal(lcm(12, 7), 84, "Returns the least common multiple of two or more numbers.");
+  t.equal(lcm(...[1, 3, 4, 5]), 60, "Returns the least common multiple of two or more numbers.");
+