Test modules in PyTest - Test Execution Trace

Test Overview

This test module contains two simple test functions to verify basic arithmetic operations. It checks if addition and multiplication work as expected.

Test Code - pytest

PyTest

import pytest

def test_addition():
    result = 2 + 3
    assert result == 5

def test_multiplication():
    result = 4 * 5
    assert result == 20

Execution Trace - 6 Steps

Step	Action	System State	Assertion	Result
1	Pytest starts test discovery and finds test_addition function	Test module loaded with two test functions	-	PASS
2	test_addition function runs: calculates 2 + 3	Calculation result stored in variable	Assert that result == 5	PASS
3	test_addition completes successfully	Test passed	-	PASS
4	Pytest runs test_multiplication function: calculates 4 * 5	Calculation result stored in variable	Assert that result == 20	PASS
5	test_multiplication completes successfully	Test passed	-	PASS
6	Pytest finishes running all tests in the module	All tests passed	-	PASS

Failure Scenario

Failing Condition: If an assertion fails, for example if result != expected value

Execution Trace Quiz - 3 Questions

What does the test_addition function verify?

A That 2 + 3 equals 6

B That 2 + 3 equals 5

C That 4 * 5 equals 20

D That 4 * 5 equals 25

Key Result

Organize related tests into modules with clear, simple test functions to keep tests easy to read and maintain.