How do I use assertions in Flask testing?

How do I use assertions in Flask testing?

In Flask testing, assertions are used to verify that your application behaves as expected. You can use the built-in unittest framework or Flask's test client to make requests and assert responses.

Can you give me an example of an assertion in a Flask test?

Sure! Here's a simple example:

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

This checks that the home page returns a 200 status code and contains the word 'Welcome'.

What other assertions can I use in my tests?

You can use assertions like assertIn, assertNotIn, assertEqual, and assertNotEqual to check various conditions in your tests.

Is there a way to test for exceptions in Flask?

Yes, you can use with self.assertRaises(ExceptionType): to test for exceptions in your Flask views.