diff --git a/package-lock.json b/package-lock.json
index 372793d..47935a9 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -4,11 +4,82 @@
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+          "integrity": "sha512-DuRs1gKbBqsMKIZlrffwlug8MHkcnpjs5VPmL1PAh+mA30U0DTotfDZ0d2UUsXpPmPmMMJ6W773MaA3J+lbiWA==",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "^4.1.0"
+          }
+        },
+        "yargs": {
+          "version": "14.2.3",
+          "resolved": "https://registry.npmjs.org/yargs/-/yargs-14.2.3.tgz",
+          "integrity": "sha512-ZbotRWhF+lkjijC/VhmOT9wSgyBQ7+zr13+YLkhfsSiTriYsMzkTUFP18pFhWwBeMa5gUc1MzbhrO6/VB7c9Xg==",
+          "dev": true,
+          "requires": {
+            "cliui": "^5.0.0",
+            "decamelize": "^1.2.0",
+            "find-up": "^3.0.0",
+            "get-caller-file": "^2.0.1",
+            "require-directory": "^2.1.1",
+            "require-main-filename": "^2.0.0",
+            "set-blocking": "^2.0.0",
+            "string-width": "^3.0.0",
+            "which-module": "^2.0.0",
+            "y18n": "^4.0.0",
+            "yargs-parser": "^15.0.1"
+          }
+        },
+        "yargs-parser": {
+          "version": "15.0.1",
+          "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-15.0.1.tgz",
+          "integrity": "sha512-0OAMV2mAZQrs3FkNpDQcBk1x5HXb8X4twADss4S0Iuk+2dGnLOE/fRHrsYm542GduMveyA77OF4wrNJuanRCWw==",
+          "dev": true,
+          "requires": {
+            "camelcase": "^5.0.0",
+            "decamelize": "^1.2.0"
+          }
+        }
+      }
     }
   }
 }
diff --git a/package.json b/package.json
index 2328974..373ab86 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,7 @@
   "description": "Download Spotify playlist as mp3 from VKontakte",
   "main": "index.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha"
   },
   "bin": {
     "vk-music-dl": "./index.js"
@@ -36,5 +36,7 @@
     "node-fetch": "^2.6.0",
     "promisepipe": "^3.0.0"
   },
-  "devDependencies": {}
+  "devDependencies": {
+    "mocha": "^8.1.3"
+  }
 }
diff --git a/test/lib.test.js b/test/lib.test.js
new file mode 100644
index 0000000..0fee5ea
--- /dev/null
+++ b/test/lib.test.js
@@ -0,0 +1,14 @@
+'use strict';
+const assert = require('assert');
+const {getSpotifyPlaylist} = require('../lib');
+
+describe('getSpotifyPlaylist', function(){
+
+  it('acquire and parse playlist from Spotify', async function(){
+    const playlist = await getSpotifyPlaylist('https://open.spotify.com/playlist/27OFA3NDwoLWtmdMvowA3S');
+    assert.strictEqual(playlist.name, 'The Best Yoga & Cool-Down Songs');
+    assert.strictEqual(playlist.type, 'playlist');
+    assert.strictEqual(playlist.tracks.items.length, 10);
+  });
+
+});