Merge pull request SQLab#142 from Highwaist/511558025

[LAB2] 511558025

Author: TaiYou-TW

lab2/main_test.js

@@ -1,6 +1,64 @@
-const test = require('node:test');
+const testUtil = require('node:test');
 const assert = require('assert');
+const fs = require('fs');
+
+// Mock the file containing names
+testUtil.mock.method(fs, 'readFile', (file, options, callback) => {
+    callback(null, 'Alice\nBob\ncat');
+});
+
 const { Application, MailSystem } = require('./main');
 
-// TODO: write your tests here
-// Remember to use Stub, Mock, and Spy when necessary
+testUtil('MailSystem_write()', () => {
+    const mailSystem = new MailSystem();
+    assert.strictEqual(mailSystem.write('Alice'), 'Congrats, Alice!');
+    assert.strictEqual(mailSystem.write(202), 'Congrats, 202!');
+    assert.strictEqual(mailSystem.write(null), 'Congrats, null!');
+});
+
+testUtil('MailSystem_send()', () => {
+    const mailSystem = new MailSystem();
+    const name = 'Alice';
+    testUtil.mock.method(Math, 'random', () => 0.9);
+    assert.strictEqual(mailSystem.send(name, 'success'), true);
+    testUtil.mock.method(Math, 'random', () => 0.2);
+    assert.strictEqual(mailSystem.send(name, 'fail'), false);
+});
+
+testUtil('Application_getNames()', async () => {
+    const app = new Application();
+    const nameList = ['Alice', 'Bob', 'cat'];
+    const [names, selected] = await app.getNames();
+    assert.deepStrictEqual(names, nameList);
+    assert.deepStrictEqual(selected, []);
+});
+
+testUtil('Application_getRandomPerson()', async () => {
+    const app = new Application();
+    const [names] = await app.getNames();                          
+    const randomPerson = app.getRandomPerson();
+});
+
+testUtil('Application_selectNextPerson()', async () => {
+    const app = new Application();
+    const [names] = await app.getNames();
+    app.selected = ['Alice'];
+    let count = 0;
+    testUtil.mock.method(app, 'getRandomPerson', () => names[count++]);
+    assert.strictEqual(app.selectNextPerson(), 'Bob');
+    assert.deepStrictEqual(app.selected, ['Alice', 'Bob']);
+    assert.strictEqual(app.selectNextPerson(), 'cat');
+    assert.deepStrictEqual(app.selected, ['Alice', 'Bob', 'cat']);
+    assert.strictEqual(app.selectNextPerson(), null);
+});
+
+testUtil('Application_notifySelected()', async () => {
+    const app = new Application();
+    const [names] = await app.getNames();
+    app.selected = names.slice(); // Select all names initially
+    app.mailSystem.send = testUtil.mock.fn(app.mailSystem.send);
+    app.mailSystem.write = testUtil.mock.fn(app.mailSystem.write);
+    app.notifySelected();
+    assert.strictEqual(app.mailSystem.send.mock.calls.length, names.length);
+    assert.strictEqual(app.mailSystem.write.mock.calls.length, names.length);
+});