Add some unit tests (#321)

- Add some unit tests to the project
- These aren't massive, more just checks to ensure certain things are as they should
  - Such as checking all commands are actually registered

#15

Reviewed-on: #321
Reviewed-by: VylpesTester <tester@vylpes.com>
Co-authored-by: Ethan Lane <ethan@vylpes.com>
Co-committed-by: Ethan Lane <ethan@vylpes.com>

package.json

@@ -7,7 +7,7 @@
     "clean": "rm -rf node_modules/ dist/",
     "build": "tsc",
     "start": "node ./dist/bot.js",
-    "test": "jest --passWithNoTests",
+    "test": "jest",
     "lint": "eslint .",
     "lint:fix": "eslint . --fix",
     "db:up": "typeorm migration:run -d dist/database/dataSources/appDataSource.js",

tests/registry.test.ts

@@ -0,0 +1,66 @@
+import {CoreClient} from "../src/client/client";
+import Registry from "../src/registry";
+import fs from "fs";
+import path from "path";
+
+describe("RegisterCommands", () => {
+    test("EXPECT every command in the commands folder to be registered", () => {
+        const registeredCommands: string[] = [];
+
+        CoreClient.RegisterCommand = jest.fn().mockImplementation((name: string) => {
+            registeredCommands.push(name);
+        });
+
+        Registry.RegisterCommands();
+
+        const commandFiles = getFilesInDirectory(path.join(process.cwd(), "src", "commands"))
+            .filter(x => x.endsWith(".ts"));
+
+        for (const file of commandFiles) {
+            expect(registeredCommands).toContain(file.split("/").pop()!.split(".")[0]);
+        }
+
+        expect(commandFiles.length).toBe(registeredCommands.length);
+    });
+});
+
+describe("RegisterButtonEvents", () => {
+    test("EXEPCT every button event in the button events folder to be registered", () => {
+        const registeredButtonEvents: string[] = [];
+
+        CoreClient.RegisterButtonEvent = jest.fn().mockImplementation((name: string) => {
+            registeredButtonEvents.push(name);
+        });
+
+        Registry.RegisterButtonEvents();
+
+        const eventFiles = getFilesInDirectory(path.join(process.cwd(), "src", "buttonEvents"))
+            .filter(x => x.endsWith(".ts"));
+
+        for (const file of eventFiles) {
+            expect(registeredButtonEvents).toContain(file.split("/").pop()!.split(".")[0].toLowerCase());
+        }
+
+        expect(eventFiles.length).toBe(registeredButtonEvents.length);
+    });
+});
+
+function getFilesInDirectory(dir: string): string[] {
+    let results: string[] = [];
+    const list = fs.readdirSync(dir);
+
+    list.forEach(file => {
+        file = path.join(dir, file);
+        const stat = fs.statSync(file);
+
+        if (stat && stat.isDirectory()) {
+            /* recurse into a subdirectory */
+            results = results.concat(getFilesInDirectory(file));
+        } else {
+            /* is a file */
+            results.push(file);
+        }
+    });
+
+    return results;
+}