How can I test my Flask application?

How can I test my Flask application?

You can test your Flask application using the built-in test client, unittest, or pytest. Would you like a code example?

Yes, please provide a code example using pytest.

Sure! Here's a simple example:

import pytest
from myapp import app

@pytest.fixture
def client():
    with app.test_client() as client:
        yield client

def test_homepage(client):
    response = client.get('/')
    assert response.status_code == 200
    assert b'Welcome' in response.data

What are some best practices for testing in Flask?

Some best practices include writing tests for every route, using fixtures for setup, and keeping tests isolated.