ran npm run tdd & generated TDD

test/gcd/gcd.js

@@ -0,0 +1,4 @@
+module.exports = (...arr) => {
+const _gcd = (x, y) => (!y ? x : gcd(y, x % y));
+return [...arr].reduce((a, b) => _gcd(a, b));
+};

test/gcd/gcd.test.js

@@ -0,0 +1,13 @@
+const test = require('tape');
+const gcd = require('./gcd.js');
+
+test('Testing gcd', (t) => {
+	//For more information on all the methods supported by tape
+	//Please go to https://github.com/substack/tape
+	t.true(typeof gcd === 'function', 'gcd is a Function');
+	//t.deepEqual(gcd(args..), 'Expected');
+	//t.equal(gcd(args..), 'Expected');
+	//t.false(gcd(args..), 'Expected');
+	//t.throws(gcd(args..), 'Expected');
+	t.end();
+});