Merge pull request #186 from sheng099/b132016

[LAB2] b132016

Author: AxelHowe

lab2/main_test.js

@@ -1,6 +1,81 @@
-const test = require('node:test');
+const {describe, it, mock} = require('node:test');
 const assert = require('assert');
-const { Application, MailSystem } = require('./main');
+const fs = require('fs');
+fs.readFile = (fileName, options, callback) => {process.nextTick(() => callback(null, 'Alice\nBob\nCharlie'));};
+const { Application, MailSystem} = require('./main');
 
 // TODO: write your tests here
-// Remember to use Stub, Mock, and Spy when necessary
+//test MailSystem
+describe('write test',() => {
+    it('return expected string', () => {
+        const mailSystem = new MailSystem();
+        assert.strictEqual(mailSystem.write('Bob'),'Congrats, Bob!');
+    });
+});
+describe('send test',() => {
+    it('success send', () => {
+        const mailSystem = new MailSystem();
+        const mockSuccess = mock.method(Math, 'random', () => 1.0);
+        const result = mailSystem.send('Bob','Success')
+        assert.strictEqual(result,true);
+        mockSuccess.mock.restore();
+    });
+    it('fail send', () => {
+        const mailSystem = new MailSystem();
+        const mockFail = mock.method(Math, 'random', () => 0);
+        const result = mailSystem.send('Bob','Fail')
+        assert.strictEqual(result,false);
+        mockFail.mock.restore();
+    });
+});
+//test Application
+describe('getNames test', () => {
+    it('people & selected', async () => {
+        const app = new Application();
+        await app.getNames();
+        assert.deepStrictEqual(app.people, ['Alice', 'Bob', 'Charlie']);
+        assert.deepStrictEqual(app.selected, []);
+    });
+});
+describe('selectNextPerson test', () => {
+    it('remain one person',async  () => {
+        const app = new Application();
+        await app.getNames();
+        app.selected = ['Alice', 'Bob'];
+        assert.strictEqual(app.selectNextPerson(),'Charlie');
+    });
+    it('if all person selected', async () => {
+        const app = new Application();
+        await app.getNames();
+        app.selected = ['Alice','Bob','Charile'];
+        assert.strictEqual(app.selectNextPerson(),null);
+    });
+});
+describe('notifySelected test', () => {
+    it('no selected',  () => {
+        const mailSystem = new MailSystem;
+        const app = new Application();
+        const mockWrite = mock.method(mailSystem, 'write', () => "Mocked Message");
+        const mockSend = mock.method(mailSystem, 'send', () => "Mocked Send");
+        app.mailSystem = mailSystem;
+        app.notifySelected();
+        assert.strictEqual(mockWrite.mock.calls.length,0);
+        assert.strictEqual(mockSend.mock.calls.length,0);
+    });
+    it('selected all',async  () => {
+        const mailSystem = new MailSystem;
+        const app = new Application();
+        const mockWrite = mock.method(mailSystem, 'write', () => "Mocked Message");
+        const mockSend = mock.method(mailSystem, 'send', () => "Mocked Send");
+        app.mailSystem = mailSystem;
+        await app.getNames();
+        app.selected = ['Alice','Bob','Charile'];
+        app.notifySelected();
+        assert.strictEqual(mockWrite.mock.calls.length,3);
+        assert.strictEqual(mockSend.mock.calls.length,3);
+        mockWrite.mock.restore();
+        mockSend.mock.restore();
+    });   
+});
+// Remember to use Stub, Mock, and Spy when necessary
+