Test data management in Testing Fundamentals - Test Execution Trace

Test Overview

This test checks if the application correctly handles user login using prepared test data. It verifies that the login succeeds with valid credentials and fails with invalid ones.

Test Code - unittest

Testing Fundamentals

import unittest

class TestLogin(unittest.TestCase):
    def setUp(self):
        # Prepare test data
        self.valid_user = {'username': 'testuser', 'password': 'Test@123'}
        self.invalid_user = {'username': 'wronguser', 'password': 'wrongpass'}

    def test_login_with_valid_data(self):
        # Simulate login with valid data
        result = login(self.valid_user['username'], self.valid_user['password'])
        self.assertTrue(result, "Login should succeed with valid credentials")

    def test_login_with_invalid_data(self):
        # Simulate login with invalid data
        result = login(self.invalid_user['username'], self.invalid_user['password'])
        self.assertFalse(result, "Login should fail with invalid credentials")

def login(username, password):
    # Dummy login function for testing
    if username == 'testuser' and password == 'Test@123':
        return True
    else:
        return False

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

Execution Trace - 3 Steps

Step	Action	System State	Assertion	Result
1	Test framework initializes and runs setUp method	Test data for valid and invalid users is prepared in memory	-	PASS
2	Test runs test_login_with_valid_data method	Login function is called with valid username and password	Assert that login returns True for valid credentials	PASS
3	Test runs test_login_with_invalid_data method	Login function is called with invalid username and password	Assert that login returns False for invalid credentials	PASS

Failure Scenario

Failing Condition: Login function returns incorrect result for given test data

Execution Trace Quiz - 3 Questions

What does the test verify with the valid user data?

A That the password is stored securely

B That login fails with incorrect username

C That login succeeds with correct username and password

D That the user can reset their password

Key Result

Prepare clear and consistent test data before running tests to ensure reliable and repeatable test results.