ran npm run tdd & generated TDD

test/difference/difference.test.js

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