Basic assert statement in PyTest - Test Execution Trace

Test Overview

This test checks if the sum of two numbers is correct using a simple assert statement in pytest.

Test Code - pytest

PyTest

def test_sum():
    result = 2 + 3
    assert result == 5, f"Expected 5 but got {result}"

Execution Trace - 4 Steps

Step	Action	System State	Assertion	Result
1	Test function 'test_sum' starts execution	Python interpreter ready to run the test	-	PASS
2	Calculate sum of 2 and 3, store in variable 'result'	Variable 'result' holds value 5	-	PASS
3	Assert that 'result' equals 5	Check if 5 == 5	Assert statement verifies result == 5	PASS
4	Test completes successfully	No errors raised, test passes	-	PASS

Failure Scenario

Failing Condition: If the sum calculation is incorrect, e.g., result is not 5

Execution Trace Quiz - 3 Questions

What does the assert statement check in this test?

A If the sum of 2 and 3 equals 6

B If the variable 'result' is defined

C If the sum of 2 and 3 equals 5

D If the test function runs without errors

Key Result

Use simple assert statements in pytest to verify expected outcomes clearly and get immediate feedback if something is wrong.