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api/tests/unit/songs/test_latest_songs.py

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+import os
+
+from unittest.mock import patch
+
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": ''})
+def test_without_api_key(client):
+    rv = client.get('/user/latest-song')
+    assert rv.json['message'] == 'INTERNAL_ERROR'
+    assert rv.status_code == 500
+
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": 'something new'})
+@patch('requests.get', side_effect=[Exception()])
+def test_get_with_exception(requests, client):
+    rv = client.get('/user/latest-song')
+    assert rv.json['message'] == 'INTERNAL_ERROR'
+    assert rv.status_code == 500
+
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": 'something old'})
+@patch('requests.get')
+def test_get_with_success(mock_get, client, lastfm_response):
+    mock_get.return_value.status_code = 500
+    mock_get.return_value.json.return_value = lastfm_response
+    rv = client.get('/user/latest-song')
+    assert rv.json == {'track': lastfm_response['recenttracks']['track'][0]}
+    assert rv.status_code == mock_get.return_value.status_code
+
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": 'something old'})
+@patch('requests.get')
+def test_get_with_success_and_different_format(mock_get, client, lastfm_response):
+    mock_get.return_value.status_code = 200
+    mock_get.return_value.json.return_value = lastfm_response
+    rv = client.get('/user/latest-song?format=shields.io')
+    song = lastfm_response['recenttracks']['track'][0]['name'] 
+    artist = lastfm_response['recenttracks']['track'][0]['artist']['#text'] 
+    
+    assert rv.json == {
+        'schemaVersion': 1,
+        'label': 'Last.FM Last Played Song',
+        'message': f"{song} - {artist}"
+    }
+    assert rv.status_code == mock_get.return_value.status_code
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": 'something old'})
+@patch('requests.get')
+def test_get_with_success_no_tracks(mock_get, client, lastfm_empty_response):
+    mock_get.return_value.status_code = 200
+    mock_get.return_value.json.return_value = lastfm_empty_response
+    rv = client.get('/user/latest-song')
+
+    assert rv.status_code == 200
+    assert rv.json == {
+        'message': 'NO_TRACKS_FOUND'
+    }
+
+@patch.dict(os.environ, {"LASTFM_API_KEY": 'something old'})
+@patch('requests.get')
+def test_get_with_error_user_not_found_tracks(mock_get, client, lastfm_no_recent_tracks_response):
+    mock_get.return_value.status_code = 200
+    mock_get.return_value.json.return_value = lastfm_no_recent_tracks_response
+    rv = client.get('/user/latest-song')
+
+    assert rv.status_code == 404
+    assert rv.json == {
+        'message': 'USER_LIKELY_DOESNT_EXIST'
+    }