Running Backend: Ensure the Spotizerr Flask application is running and accessible at http://localhost:7171. You can start it with python app.py.
Python Dependencies: Install the necessary Python packages for testing.
```
pip install pytest requests python-dotenv
```
Credentials: These tests require valid Spotify and Deezer credentials. Create a file named .env in the root directory of the project (spotizerr) and add your credentials to it. The tests will load this file automatically.

Example .env file:
```
SPOTIFY_API_CLIENT_ID="your_spotify_client_id"
SPOTIFY_API_CLIENT_SECRET="your_spotify_client_secret"
# This should be the full JSON content of your credentials blob as a single line string
SPOTIFY_BLOB_CONTENT='{"username": "your_spotify_username", "password": "your_spotify_password", ...}'
DEEZER_ARL="your_deezer_arl"
```
The tests will automatically use these credentials to create and manage test accounts named test-spotify-account and test-deezer-account.

Running Tests

To run all tests, navigate to the root directory of the project (spotizerr) and run pytest:

pytest

To run a specific test file:

pytest tests/test_downloads.py

For more detailed output, use the -v (verbose) and -s (show print statements) flags:

pytest -v -s