jest.config.js

@@ -1,3 +1,5 @@
+/** @type {import('@ts-jest/dist/types').InitialOptionsTsJest} */
 module.exports = {
-    testEnvironment: 'node'
-}
+  preset: 'ts-jest',
+  testEnvironment: 'node',
+};

package.json

@@ -25,7 +25,10 @@
   ],
   "repository": "github:vylpes/vylbot-core",
   "devDependencies": {
+    "@types/jest": "^26.0.24",
     "@types/node": "^16.3.2",
+    "jest": "^27.0.6",
+    "ts-jest": "^27.0.4",
     "typescript": "^4.3.5"
   }
 }

tests/client/client.test.ts

@@ -0,0 +1,135 @@
+import { CoreClient } from "../../src/client/client";
+
+import { Client } from "discord.js";
+import * as dotenv from "dotenv";
+import { Events } from "../../src/client/events";
+import { Util } from "../../src/client/util";
+
+jest.mock("discord.js");
+jest.mock("dotenv");
+jest.mock("../../src/client/events");
+jest.mock("../../src/client/util");
+
+test('Constructor_ExpectSuccessfulInitialisation', () => {
+    const coreClient = new CoreClient();
+
+    expect(coreClient).toBeInstanceOf(Client);
+    expect(dotenv.config).toBeCalledTimes(1);
+    expect(Events).toBeCalledTimes(1);
+    expect(Util).toBeCalledTimes(1);
+});
+
+test('Start_GivenEnvIsValid_ExpectSuccessfulStart', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).not.toThrow();
+    expect(coreClient.on).toBeCalledWith("message", expect.any(Function));
+    expect(coreClient.on).toBeCalledWith("ready", expect.any(Function));
+});
+
+test('Start_GivenBotTokenIsNull_ExpectFailure', () => {
+    process.env = {
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("BOT_TOKEN is not defined in .env");
+});
+
+test('Start_GivenBotTokenIsEmpty_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: '',
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("BOT_TOKEN is not defined in .env");
+});
+
+test('Start_GivenBotPrefixIsNull_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("BOT_PREFIX is not defined in .env");
+});
+
+test('Start_GivenBotPrefixIsEmpty_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("BOT_PREFIX is not defined in .env");
+});
+
+test('Start_GivenFoldersCommandsIsNull_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '!',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("FOLDERS_COMMANDS is not defined in .env");
+});
+
+test('Start_GivenFoldersCommandsIsEmpty_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: '',
+        FOLDERS_EVENTS: 'events',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("FOLDERS_COMMANDS is not defined in .env");
+});
+
+test('Start_GivenFoldersEventsIsNull_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: 'commands',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("FOLDERS_EVENTS is not defined in .env");
+});
+
+test('Start_GivenFoldersCommandsIsEmpty_ExpectFailure', () => {
+    process.env = {
+        BOT_TOKEN: 'TOKEN',
+        BOT_PREFIX: '!',
+        FOLDERS_COMMANDS: 'commands',
+        FOLDERS_EVENTS: '',
+    }
+
+    const coreClient = new CoreClient();
+    
+    expect(() => coreClient.start()).toThrow("FOLDERS_EVENTS is not defined in .env");
+});

tsconfig.json

@@ -71,5 +71,8 @@
   },
   "include": [
     "./src",
+  ],
+  "exclude": [
+    "./tests"
   ]
 }