Pytest on Flask: Setting up the Flask App for Testing
Understand how to set up a Flask application for testing by creating an application instance with pytest fixtures. Learn to manage application context to simulate HTTP requests accurately and ensure safe testing by using separate test databases, preparing you to write effective tests for Flask APIs.
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Pytest on Flask
Testing Flask applications with pytest is trickier than testing the basic logic, because we can’t just call the application methods and have it work. A Flask application instance needs to be created first. There’s also the database to worry about. We need the server to access the database, but we also need to be sure we don’t mess up the real data. Generally, a separate testing database will make this possible. We’ll use pytest fixtures to handle both the Flask application instance and, in the next chapter, the testing database. ...