You have a test file named TestExample.py with a function def test_func():. pytest does not run this test. What is the likely cause?

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PyTest - Test Organization

You have a test file named TestExample.py with a function def test_func():. pytest does not run this test. What is the likely cause?

AFunction name does not start with 'test_'

Bpytest requires test classes to run tests

CFile name does not follow pytest discovery rules

DFunction is missing a return statement

Step-by-Step Solution

Solution:

Step 1: Check pytest file discovery rules
pytest finds files starting or ending with 'test' in lowercase and ending with '.py'. 'TestExample.py' starts with uppercase 'T', so it is not recognized.
Step 2: Verify function name and other options
Function name 'test_func' is correct. Return statement is not required. pytest does not require test classes to run functions.
Final Answer:
File name does not follow pytest discovery rules -> Option C
Quick Check:
File name case-sensitive for discovery = D [OK]

Quick Trick: File names must be lowercase starting or ending with 'test' [OK]

Common Mistakes:

MISTAKES

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