[LAB6] 510558017

lab1/main.js

@@ -42,14 +42,14 @@ class Student {
     }
 }
 
-// const myClass = new MyClass();
-// const names = ['John', 'Jane', 'Doe', 'Smith'];
-// names.forEach(name => {
-//     const student = new Student();
-//     student.setName(name);
-//     const newStudentId = myClass.addStudent(student);
-//     const newStudentName = myClass.getStudentById(newStudentId).getName();
-//     console.log('[+] Added student with id: %d, name: %s', newStudentId, newStudentName);
+ //const myClass = new MyClass();
+//const names = ['John', 'Jane', 'Doe', 'Smith'];
+//names.forEach(name => {
+    // const student = new Student();
+     //student.setName(name);
+   // const newStudentId = myClass.addStudent(student);
+     //const newStudentName = myClass.getStudentById(newStudentId).getName();
+  //  console.log('[+] Added student with id: %d, name: %s', newStudentId, newStudentName);
 // });
 
-module.exports = { MyClass, Student };
+module.exports = { MyClass, Student };

lab1/main_test.js

@@ -3,21 +3,39 @@ const assert = require('assert');
 const { MyClass, Student } = require('./main');
 
 test("Test MyClass's addStudent", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName("John");
+    const index = myClass.addStudent(student);
+    assert.strictEqual(index, 0, "addStudent should return index 0 for the first student");
+    const notAStudent = {}; 
+    const indexForNotAStudent = myClass.addStudent(notAStudent);
+    assert.strictEqual(indexForNotAStudent, -1, "addStudent should return -1 when adding a non-Student instance");
 });
 
 test("Test MyClass's getStudentById", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const myClass = new MyClass();
+    const student = new Student();
+    student.setName("Jane");
+    const index = myClass.addStudent(student);
+    const fetchedStudent = myClass.getStudentById(index);
+    assert.strictEqual(fetchedStudent.getName(), "Jane", "getStudentById should retrieve the student with the correct name");
+    const invalidFetchedStudent = myClass.getStudentById(-1);
+    assert.strictEqual(invalidFetchedStudent, null, "getStudentById should return null for an invalid id");
 });
 
 test("Test Student's setName", () => {
-    // TODO
-    throw new Error("Test not implemented");
+    const student = new Student();
+    student.setName("Doe");
+    assert.strictEqual(student.name, "Doe", "setName should correctly set the student's name");
+    student.setName(123); 
+    assert.strictEqual(student.name, "Doe", "setName should not set name when the input is not a string");
 });
 
 test("Test Student's getName", () => {
-    // TODO
-    throw new Error("Test not implemented");
-});
+    const student = new Student();
+    student.setName("Smith");
+    assert.strictEqual(student.getName(), "Smith", "getName should return the correct name");
+    const newStudent = new Student();
+    assert.strictEqual(newStudent.getName(), '', "getName should return an empty string for a student without a name");
+});

lab2/main_test.js

@@ -1,6 +1,66 @@
 const test = require('node:test');
 const assert = require('assert');
+const fs = require('fs');
+test.mock.method(fs, 'readFile', (file, options, callback) => {
+  callback(null, 'Guan\nChen\nGala');
+});
 const { Application, MailSystem } = require('./main');
 
-// TODO: write your tests here
-// Remember to use Stub, Mock, and Spy when necessary
+test("Test MailSystem's write", () => {
+    const myClass = new MailSystem()
+    assert.strictEqual( myClass.write("Guan"),"Congrats, Guan!")
+});
+
+test("Test MailSystem's send(name, context)", () => {
+  Math.random = () => 0.6
+    const mailSystem = new MailSystem()
+    const context = mailSystem.write("Guan")
+    const success = mailSystem.send("Guan",context)
+    assert.strictEqual(success,true)
+    Math.random = () => 0.5
+    assert.strictEqual(mailSystem.send("Chen",context),false)
+});
+
+test("Test Application's getNames", async () => {
+  const application = new Application
+  const [people, selected] = await application.getNames()
+  assert.deepStrictEqual(people, ["Guan", "Chen", "Gala"])
+  assert.deepStrictEqual(selected, [])
+});
+
+test("Test Application's getRandomPerson()", (t) => {
+  const application = new Application
+  application.people = ["Guan", "Chen", "Gala"]
+  Math.random = () => 0
+  assert.deepStrictEqual(application.getRandomPerson(), "Guan");
+  Math.random = () => 0.6
+  assert.deepStrictEqual(application.getRandomPerson(), "Chen");
+  Math.random = () => 0.9
+  assert.deepStrictEqual(application.getRandomPerson(), "Gala");
+});
+
+test("Test Application's selectNextPerson",  async() => {
+  const application = new Application
+  const name_list = await application.getNames();
+  application.selected = ["Guan"]
+  let count = 0;
+  test.mock.method(application, 'getRandomPerson', () => {
+      if (count <= name_list.length) { 
+          return name_list[0][count++]; 
+      }
+  });
+  assert.strictEqual(application.selectNextPerson(), "Chen")
+  assert.strictEqual(application.selectNextPerson(), "Gala")
+  assert.strictEqual(application.selectNextPerson(), null)
+});
+
+test("Test Application's notifySelected() ",  () => {
+  const application = new Application  
+  application.people = ["Guan", "Chen", "Gala"]
+  application.selected = ["Guan", "Chen", "Gala"]
+  application.mailSystem.write = test.mock.fn(application.mailSystem.write)
+  application.mailSystem.send = test.mock.fn(application.mailSystem.send)
+  application.notifySelected()
+  assert.strictEqual(application.mailSystem.send.mock.calls.length, application.people.length);
+  assert.strictEqual(application.mailSystem.write.mock.calls.length, application.people.length); 
+});