Updated the test system

test/isAnagram.test.js

@@ -0,0 +1,18 @@
+const expect = require('expect');
+const {isAnagram} = require('./_30s.js');
+
+test('isAnagram is a Function', () => {
+  expect(isAnagram).toBeInstanceOf(Function);
+});
+test('Checks valid anagram', () => {
+  expect(isAnagram('iceman', 'cinema')).toBeTruthy();
+});
+test('Works with spaces', () => {
+  expect(isAnagram('rail safety', 'fairy tales')).toBeTruthy();
+});
+test('Ignores case', () => {
+  expect(isAnagram('roast beef', 'eat for BSE')).toBeTruthy();
+});
+test('Ignores special characters', () => {
+  expect(isAnagram('Regera Dowdy', 'E. G. Deadworry')).toBeTruthy();
+});