new_contents: from unittest import TestCase
  
  from nba_data.data.player_data import PlayerData
  
  
  class TestPlayerData(TestCase):
      def test_instantiation(self):
          player_id = '1234'
          name = 'jae'
          jersey = 0
          team_seasons = list()
          self.assertIsNotNone(PlayerData(player_id=player_id, name=name, jersey=jersey, team_seasons=team_seasons))
          self.assertRaises(AssertionError, PlayerData, 1, name, jersey, team_seasons)
          self.assertRaises(AssertionError, PlayerData, player_id, 1, jersey, team_seasons)
          self.assertRaises(AssertionError, PlayerData, player_id, name, '1', team_seasons)
          self.assertRaises(AssertionError, PlayerData, player_id, name, jersey, 1)
  
subject: add player data test