Merge pull request #101 from zihzi/512557026

[LAB2] 512557026

lab2/main_test.js

@@ -1,6 +1,107 @@
-const test = require('node:test');
-const assert = require('assert');
-const { Application, MailSystem } = require('./main');
+const { test, mock } = require("node:test");
+const assert = require("assert");
+const fs = require("node:fs");
+const util = require("util");
+const writeFile = util.promisify(fs.writeFile);
+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 mailSystem = new MailSystem();
+  const testResult = mailSystem.write("Chii");
+  assert.strictEqual(testResult, "Congrats, Chii!");
+});
+
+test("Test MailSystem's send", (t) => {
+  const mailSystem = new MailSystem();
+  function send() {
+    return mailSystem.send("Chii", "Congrats, Chii!");
+  }
+  const fn = t.mock.fn(send);
+  Math.random = () => 0.6;
+  assert.strictEqual(fn(), true);
+  Math.random = () => 0.4;
+  assert.strictEqual(fn(), false);
+});
+
+test("Test Application's getNames", async () => {
+  const stubFile = "name_list.txt";
+  const stubData = "Chii\nHachi\nUsagi";
+  await writeFile(stubFile, stubData, "utf8");
+  const application = new Application();
+  const testResult = await application.getNames();
+  assert.deepStrictEqual(testResult, [["Chii", "Hachi", "Usagi"], []]);
+  fs.unlinkSync(stubFile);
+});
+
+test("Test Application's getRandomPerson", async () => {
+  const stubFile = "name_list.txt";
+  const stubData = "Chii\nHachi\nUsagi";
+  await writeFile(stubFile, stubData, "utf8");
+  const application = new Application();
+  application.people = ["Chii", "Hachi", "Usagi"];
+  const testPerson = application.getRandomPerson();
+  assert.ok(application.people.includes(testPerson));
+  fs.unlinkSync(stubFile);
+});
+
+test("Test Application's  selectNextPerson", async () => {
+  const stubFile = "name_list.txt";
+  const stubData = "Chii\nHachi\nUsagi";
+  await writeFile(stubFile, stubData, "utf8");
+  const application = new Application();
+  application.people = ["Chii", "Hachi"];
+
+  application.getRandomPerson = () => "Chii";
+  assert.strictEqual(application.selectNextPerson(), "Chii");
+  application.getRandomPerson = () => "Hachi";
+  assert.strictEqual(application.selectNextPerson(), "Hachi");
+  assert.strictEqual(application.selectNextPerson(), null);
+  let first = 1;
+  application.getRandomPerson = () => {
+    if (first == 1) {
+      first--;
+      return "Chii";
+    } else return "Hachi";
+  };
+  application.selected = ["Chii"];
+  assert.strictEqual(application.selectNextPerson(), "Hachi");
+  fs.unlinkSync(stubFile);
+});
+
+test("Test Application's notifySelected", async () => {
+  const stubFile = "name_list.txt";
+  const stubData = "Chii\nHachi\nUsagi";
+  await writeFile(stubFile, stubData, "utf8");
+  const application = new Application();
+  const getNames = await application.getNames();
+  assert.deepStrictEqual(getNames, [["Chii", "Hachi", "Usagi"], []]);
+
+  const mockWrite = test.mock.fn(MailSystem.prototype.write);
+  const mockSend = test.mock.fn(MailSystem.prototype.send);
+
+  MailSystem.prototype.write = mockWrite;
+  MailSystem.prototype.send = mockSend;
+
+  //No people is selected
+  application.selected = [];
+  application.notifySelected();
+
+  assert.strictEqual(mockWrite.mock.calls.length, 0);
+  assert.strictEqual(mockSend.mock.calls.length, 0);
+
+  //people is selected
+  application.selected = ["Chii", "Hachi", "Usagi"];
+  application.notifySelected();
+
+  assert.strictEqual(mockWrite.mock.calls.length, 3);
+  assert.strictEqual(mockSend.mock.calls.length, 3);
+  assert.deepStrictEqual(
+    mockWrite.mock.calls.map((call) => call.arguments[0]),
+    ["Chii", "Hachi", "Usagi"]
+  );
+  assert.deepStrictEqual(
+    mockSend.mock.calls.map((call) => call.arguments[0]),
+    ["Chii", "Hachi", "Usagi"]
+  );
+  fs.unlinkSync(stubFile);
+});