old_contents: from django.test import TestCase
  
  # Create your tests here.
  
new_contents: import datetime
  
  from unittest import TestCase
  
  from . import models
  
  
  class ArtistModelTest(TestCase):
  
      """Tests for Artist model."""
  
      def test_str(self):
          name = "Brad Sucks"
          artist = models.Artist(name=name)
          self.assertEqual(str(artist), name)
  
  
  class HyperlinkModelTest(TestCase):
  
      """Tests for Hyperlink model."""
  
      def test_str(self):
          url = "http://example.com"
          link = models.Hyperlink(order=1, name="Jamendo", url=url)
          self.assertEqual(str(link), url)
  
  
  class JamendoArtist(TestCase):
  
      """Tests for Jamendo artist model."""
  
      def setUp(self):
          self.name = "Brad Sucks"
          self.url = "http://www.jamendo.com/artist/1333"
          self.artist = models.JamendoArtist(
              id=1333,
              name=self.name,
              image="https://imgjam.com/artists/b/bradsucks.jpg",
              shorturl="http://jamen.do/a/1333",
              joindate=datetime.date(2006, 2, 27),
              shareurl=self.url,
              website="http://www.bradsucks.net/"
          )
  
      def test_str(self):
          self.assertEqual(str(self.artist), self.name)
  
      def test_name(self):
          self.assertEqual(self.artist.name, self.name)
  
      def test_url(self):
          self.assertEqual(self.artist.url, self.url)
  
  
  class MagnatuneArtist(TestCase):
  
      """Tests for Magnatune artist model."""
  
      def setUp(self):
          self.name = "Brad Sucks"
          self.url = "http://magnatune.com/artists/brad_sucks/"
          self.artist = models.MagnatuneArtist(
              id=685,
              artist=self.name,
              homepage='brad_sucks',
              description='brilliantly sardonic indie rock',
              bio="One of Magnatune's best selling artists.",
              bandphoto='/artists/img/brad_sucks2.jpg',
              city='',
              state='Ontario',
              country='Canada',
          )
  
      def test_str(self):
          self.assertEqual(str(self.artist), self.name)
  
      def test_name(self):
          self.assertEqual(self.artist.name, self.name)
  
      def test_url(self):
          self.assertEqual(self.artist.url, self.url)
  
  
  class FMAArtist(TestCase):
  
      """Tests for FreeMusicArchive artist model."""
  
      def setUp(self):
          self.name = "Brad Sucks"
          self.url = "http://freemusicarchive.org/music/Brad_Sucks/"
          self.artist = models.FMAArtist(
              artist_id=3227,
              artist_name=self.name,
              artist_handle="Brad_Sucks",
              artist_bio="Brad Turcotte is a musician from Ottawa.",
              artist_comments=0,
              artist_date_created=datetime.datetime(2009, 5, 5, 7, 25, 25),
              artist_donation_url="http://www.bradsucks.net/tips/",
              artist_favorites=20,
              artist_image_file="http://freemusicarchive.org/file/images/"
                                "artists/Brad_Sucks_-_20110330163911796.jpg",
              artist_url=self.url,
              artist_website="http://www.bradsucks.net/",
              tags=["brad sucks"],
          )
  
      def test_str(self):
          self.assertEqual(str(self.artist), self.name)
  
      def test_name(self):
          self.assertEqual(self.artist.name, self.name)
  
      def test_url(self):
          self.assertEqual(self.artist.url, self.url)
  
subject: Add unit tests for artists.models