adding a util to convert spotify links to uris

src/spotify/index.js

@@ -10,6 +10,11 @@ module.exports = {
     API_BASE,
     ERROR_EXPIRED_TOKEN,
     ERROR_INVALID_TRACK_URI,
+    convertLinkToUri(link) {
+        return link
+            .replace('https://open.spotify.com', 'spotify')
+            .split('/').join(':');
+    },
     extractFromUri(uri, property) {
         const arr = uri.split(':');
         const propIndex = arr.indexOf(property);

test/spotify/test_convertLinkToUri.js

@@ -0,0 +1,35 @@
+const {describe, it} = require('mocha');
+const { expect, config } = require('chai');
+const { convertLinkToUri } = require('../../src/spotify');
+
+
+const context = describe;
+
+config.includeStack = true;
+
+describe('#spotify.convertLinkToUri', () => {
+
+    context('with an http link to a spotify track', () => {
+        it('converts it to a uri', () => {
+            const link = 'https://open.spotify.com/track/5uSXPDwXLpYF7aLmTnB3Mb';
+            const uri = convertLinkToUri(link);
+            expect(uri).to.equal('spotify:track:5uSXPDwXLpYF7aLmTnB3Mb');
+        });
+    });
+
+    context('with a uri to a spotify track', () => {
+        it('returns the uri as is', () => {
+            const link = 'spotify:track:5uSXPDwXLpYF7aLmTnB3Mb';
+            const uri = convertLinkToUri(link);
+            expect(uri).to.equal('spotify:track:5uSXPDwXLpYF7aLmTnB3Mb');
+        });
+    });
+
+    context('with a string that is not a spotify link', () => {
+        it('doesn\'t break', () => {
+            const link = 'https://developer.spotify.com/web-api/get-track/';
+            const uri = convertLinkToUri(link);
+            expect(uri).to.be.a('String');
+        });
+    });
+});

test/spotify/test_extractFromUri.js

@@ -5,7 +5,7 @@ const { extractFromUri } = require('../../src/spotify');
 const context = describe;
 
 
-describe('The extractFromUri util', () => {
+describe('#spotify.extractFromUri', () => {
     context('With a link to a playlist', () => {
 
         const uri = 'spotify:user:awpoops:playlist:5PP1I2m0uxEBb3VKLhI7bP';