PyTest - Writing Assertions
Which of the following is the correct way to assert a
DeprecationWarning using pytest.warns?Which of the following is the correct way to assert a DeprecationWarning using pytest.warns?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Identify correct usage
pytest.warns is used as a context manager with the warning class as argument.Step 2: Analyze options
with pytest.warns(DeprecationWarning): some_function() correctly uses the context manager with the warning class. Options B and D misuse the function call syntax. with pytest.warns('DeprecationWarning'): some_function() incorrectly passes a string instead of the warning class.Final Answer:
with pytest.warns(DeprecationWarning): some_function() -> Option CQuick Check:
Use warning class, not string, with context manager [OK]
Quick Trick: Use warning class inside pytest.warns context [OK]
Common Mistakes:
MISTAKES- Passing warning name as string instead of class
- Calling pytest.warns as a function without context manager
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