Install jest

package.json

@@ -23,8 +23,8 @@
   "scripts": {
     "build": "tsc",
     "start": "ts-node app.ts",
-    "test": "echo none",
-    "lint": "eslint ."
+    "test": "jest",
+    "lint": "eslint"
   },
   "bugs": {
     "url": "https://gitea.vylpes.xyz/RabbitLabs/random-bunny/issues",
@@ -33,8 +33,16 @@
   "homepage": "https://gitea.vylpes.xyz/RabbitLabs/random-bunny",
   "funding": "https://ko-fi.com/vylpes",
   "devDependencies": {
+    "@types/eslint": "^8.21.1",
+    "@types/jest": "^29.4.0",
     "@types/node": "^18.0.0",
-    "eslint": "^7.17.0",
+    "@typescript-eslint/eslint-plugin": "^5.54.0",
+    "@typescript-eslint/parser": "^5.54.0",
+    "eslint": "^8.35.0",
+    "jest": "^29.4.3",
+    "jest-mock-extended": "^3.0.3",
+    "ts-jest": "^29.0.5",
+    "ts-mockito": "^2.6.1",
     "ts-node": "^10.9.1",
     "typescript": "^4.9.5"
   },