You wrote a test class inheriting from TestCase but your tests fail with errors about database access. What is a likely cause?

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Django - Testing Django Applications

You wrote a test class inheriting from TestCase but your tests fail with errors about database access. What is a likely cause?

AYou forgot to run migrations before testing

BYou used <code>SimpleTestCase</code> instead of <code>TestCase</code>

CYou did not import <code>TestCase</code> correctly

DYour test methods are missing the <code>self</code> parameter

Step-by-Step Solution

Solution:

Step 1: Understand database setup in tests
TestCase requires the test database to be migrated before running tests.
Step 2: Identify common causes of DB errors
Failing to run migrations causes database errors even if TestCase is used.
Final Answer:
You forgot to run migrations before testing -> Option A
Quick Check:
DB errors often mean missing migrations [OK]

Quick Trick: Run migrations before tests using TestCase [OK]

Common Mistakes:

MISTAKES

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