public function testDeleteUserPlaylistTracks()
 {
     $tracks = array(array('id' => '1id6H6vcwSB9GGv9NXh5cl', 'positions' => 0), array('id' => '3mqRLlD9j92BBv1ueFhJ1l', 'positions' => array(1, 2)), array('id' => '4iV5W9uYEdYUVa79Axb7Rh'));
     $expected = json_encode(array('snapshot_id' => 'snapshot_id', 'tracks' => array(array('positions' => array(0), 'uri' => 'spotify:track:1id6H6vcwSB9GGv9NXh5cl'), array('positions' => array(1, 2), 'uri' => 'spotify:track:3mqRLlD9j92BBv1ueFhJ1l'), array('uri' => 'spotify:track:4iV5W9uYEdYUVa79Axb7Rh'))));
     $headers = array('Authorization' => 'Bearer ' . $this->accessToken, 'Content-Type' => 'application/json');
     $return = array('body' => get_fixture('snapshot-id'));
     $stub = $this->setupStub('DELETE', '/v1/users/mcgurk/playlists/0UZ0Ll4HJHR7yvURYbHJe9/tracks', $expected, $headers, $return);
     $api = new SpotifyWebAPI\SpotifyWebAPI($stub);
     $api->setAccessToken($this->accessToken);
     $response = $api->deleteUserPlaylistTracks('mcgurk', '0UZ0Ll4HJHR7yvURYbHJe9', $tracks, 'snapshot_id');
     $this->assertNotFalse($response);
 }