ran npm run tdd & generated TDD

test/once/once.js

@@ -0,0 +1,8 @@
+module.exports = fn => {
+let called = false;
+return function(...args) {
+if (called) return;
+called = true;
+return fn.apply(this, args);
+};
+};

test/once/once.test.js

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