Pair testing in Testing Fundamentals - Test Execution Trace

Test Overview

This test simulates a pair testing session where two testers work together to test a simple login form. It verifies that both testers can interact with the form and validate the login functionality collaboratively.

Test Code - unittest

Testing Fundamentals

class PairTestingSimulation:
    def __init__(self):
        self.login_successful = False
        self.tester1_input = None
        self.tester2_input = None

    def tester1_enters_username(self, username):
        self.tester1_input = username

    def tester2_enters_password(self, password):
        self.tester2_input = password

    def submit_login(self):
        if self.tester1_input == 'user' and self.tester2_input == 'pass':
            self.login_successful = True
        else:
            self.login_successful = False

import unittest

class TestPairTesting(unittest.TestCase):
    def test_pair_login(self):
        session = PairTestingSimulation()
        session.tester1_enters_username('user')
        session.tester2_enters_password('pass')
        session.submit_login()
        self.assertTrue(session.login_successful, 'Login should be successful with correct credentials')

if __name__ == '__main__':
    unittest.main()

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Test starts and PairTestingSimulation instance is created	A new testing session is ready with no inputs	-	PASS
2	Tester 1 enters username 'user'	Username field set to 'user'	-	PASS
3	Tester 2 enters password 'pass'	Password field set to 'pass'	-	PASS
4	Submit login is triggered	System checks if username and password match expected values	Check if login_successful is True	PASS
5	Assertion verifies login success	login_successful is True	assertTrue(login_successful)	PASS

Failure Scenario

Failing Condition: Either tester enters incorrect credentials

Execution Trace Quiz - 3 Questions

What does the test verify in the pair testing session?

A That only one tester can enter data

B That the system rejects all logins

C That both testers can input credentials and login succeeds

D That the password is visible on screen

Key Result

Pair testing helps catch issues early by combining two testers' perspectives, improving test coverage and collaboration.