Final fixes, all tests running

test/functionName/functionName.test.js

@@ -1,23 +1,18 @@
 const expect = require('expect');
 let output = '';
-const console = {};
-console.debug = (x) => output = x;
-const functionName = fn => (console.debug(fn.name), fn);
+const functionName = fn => fn.name;
 
 test('functionName is a Function', () => {
   expect(functionName).toBeInstanceOf(Function);
 });
-functionName(Math.max);
 test('Works for native functions', () => {
-  expect(output).toBe('max');
+  expect(functionName(Math.max)).toBe('max');
 });
 function fun(x) {return x;}
-functionName(fun);
 test('Works for functions', () => {
-  expect(output).toBe('fun');
+  expect(functionName(fun)).toBe('fun');
 });
 const fn = x => x;
-functionName(fn);
 test('Works for arrow functions', () => {
-  expect(output).toBe('fn');
+  expect(functionName(fn)).toBe('fn');
 });