Update main_test.js

lab2/main_test.js

@@ -1,6 +1,79 @@
-const test = require('node:test');
-const assert = require('assert');
+const fs = require('fs');
+const util = require('util');
+const readFile = util.promisify(fs.readFile);
 const { Application, MailSystem } = require('./main');
+const Jasmine = require('jasmine');
+const jasmine = new Jasmine();
 
-// TODO: write your tests here
-// Remember to use Stub, Mock, and Spy when necessary
+describe('MailSystem', () => {
+    let mailSystem;
+
+    beforeEach(() => {
+        mailSystem = new MailSystem();
+    });
+
+    it('should write mail with correct context', () => {
+        const name = 'John Doe';
+        const context = mailSystem.write(name);
+        expect(context).toBe('Congrats, ' + name + '!');
+    });
+
+    it('should send mail successfully', () => {
+        spyOn(console, 'log');
+        spyOn(Math, 'random').and.returnValue(0.6); // Mocking Math.random to always return a value > 0.5
+        const success = mailSystem.send('John Doe', 'Congrats, John Doe!');
+        expect(success).toBe(true);
+        expect(console.log).toHaveBeenCalledWith('mail sent');
+    });
+
+    it('should fail to send mail', () => {
+        spyOn(console, 'log');
+        spyOn(Math, 'random').and.returnValue(0.4); // Mocking Math.random to always return a value <= 0.5
+        const success = mailSystem.send('John Doe', 'Congrats, John Doe!');
+        expect(success).toBe(false);
+        expect(console.log).toHaveBeenCalledWith('mail failed');
+    });
+});
+
+describe('Application', () => {
+    let app;
+    let mockReadFile;
+
+    beforeEach(() => {
+        mockReadFile = spyOn(util, 'promisify').and.returnValue(jasmine.createSpy().and.returnValue(Promise.resolve('John Doe\nJane Doe\n')));
+        app = new Application();
+    });
+
+    it('should get names from file', async () => {
+        const [people, selected] = await app.getNames();
+        expect(people).toEqual(['John Doe', 'Jane Doe']);
+        expect(selected).toEqual([]);
+    });
+
+    it('should select a random person', async () => {
+        await app.getNames();
+        spyOn(Math, 'random').and.returnValue(0.5); // Mocking Math.random
+        const person = app.getRandomPerson();
+        expect(person).toBe('Jane Doe');
+    });
+
+    it('should select next person', async () => {
+        await app.getNames();
+        const person = app.selectNextPerson();
+        expect(person).toBe('John Doe');
+        expect(app.selected).toEqual(['John Doe']);
+    });
+
+    it('should notify selected people', async () => {
+        await app.getNames();
+        app.selectNextPerson();
+        spyOn(app.mailSystem, 'write').and.callThrough();
+        spyOn(app.mailSystem, 'send').and.callThrough();
+        spyOn(console, 'log');
+        app.notifySelected();
+        expect(app.mailSystem.write).toHaveBeenCalledWith('John Doe');
+        expect(app.mailSystem.send).toHaveBeenCalledWith('John Doe', 'Congrats, John Doe!');
+    });
+});
+
+jasmine.execute();