Updated the test system

test/zipObject.test.js

@@ -0,0 +1,43 @@
+const expect = require('expect');
+const {zipObject} = require('./_30s.js');
+
+test('zipObject is a Function', () => {
+  expect(zipObject).toBeInstanceOf(Function);
+});
+test('zipObject([a, b, c], [1, 2]) returns {a: 1, b: 2, c: undefined}', () => {
+  expect(zipObject(['a', 'b', 'c'], [1, 2])).toEqual({ a: 1, b: 2, c: undefined });
+});
+test('zipObject([a, b], [1, 2, 3]) returns {a: 1, b: 2}', () => {
+  expect(zipObject(['a', 'b'], [1, 2, 3])).toEqual({ a: 1, b: 2 });
+});
+test('zipObject([a, b, c], string) returns { a: s, b: t, c: r }', () => {
+  expect(zipObject(['a', 'b', 'c'], 'string')).toEqual({ a: 's', b: 't', c: 'r' });
+});
+test('zipObject([a], string) returns { a: s }', () => {
+  expect(zipObject(['a'], 'string')).toEqual({ a: 's' });
+});
+test('zipObject() throws an error', () => {
+  expect(() => {
+    zipObject();
+  }).toThrow();
+});
+test("zipObject((['string'], null) throws an error", () => {
+  expect(() => {
+    zipObject(['string'], null);
+  }).toThrow();
+});
+test('zipObject(null, [1]) throws an error', () => {
+  expect(() => {
+    zipObject(null, [1]);
+  }).toThrow();
+});
+test("zipObject('string') throws an error", () => {
+  expect(() => {
+    zipObject('string');
+  }).toThrow();
+});
+test("zipObject('test', 'string') throws an error", () => {
+  expect(() => {
+    zipObject('test', 'string');
+  }).toThrow();
+});