Updated the test system

test/matchesWith.test.js

@@ -0,0 +1,16 @@
+const expect = require('expect');
+const {matchesWith} = require('./_30s.js');
+
+test('matchesWith is a Function', () => {
+  expect(matchesWith).toBeInstanceOf(Function);
+});
+const isGreeting = val => /^h(?:i|ello)$/.test(val);
+test('Returns true for two objects with similar values, based on the provided function', () => {
+  expect(
+    matchesWith(
+      { greeting: 'hello' },
+      { greeting: 'hi' },
+      (oV, sV) => isGreeting(oV) && isGreeting(sV)
+    )
+  ).toBeTruthy();
+});