tests: added tests

package.json

@@ -6,7 +6,8 @@
   "author": "Simone Corsi<simonecorsi.dev@gmail.com>",
   "license": "MIT",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1",
+    "test": "nyc --reporter=lcov --reporter=text-summary ava -s -v",
+    "test:watch": "ava -w",
     "style:lint": "eslint src --ext .ts",
     "style:prettier": "prettier \"src/**/*.ts\" --list-different --write",
     "build": "./node_modules/.bin/ncc build src/index.ts -o ./",
@@ -30,6 +31,7 @@
     "@types/ejs": "^3.0.5",
     "@types/got": "^9.6.11",
     "@types/node": "^14.14.5",
+    "@types/sinon": "^9.0.10",
     "@typescript-eslint/eslint-plugin": "^4.6.0",
     "@typescript-eslint/parser": "^4.6.0",
     "@vercel/ncc": "^0.26.2",
@@ -47,6 +49,7 @@
     "ninos": "^3.0.0",
     "nyc": "^15.0.1",
     "prettier": "^2.0.5",
+    "sinon": "^9.2.3",
     "standard-version": "^9.0.0",
     "ts-node-dev": "^1.1.1",
     "typescript": "^4.1.3"
@@ -63,4 +66,4 @@
   "volta": {
     "node": "14.15.4"
   }
-}
+}