System testing in Testing Fundamentals - Test Execution Trace

Test Overview

This test checks the entire software system working together as expected. It verifies that all parts interact correctly and the system meets the requirements.

Test Code - PyTest

Testing Fundamentals

def test_system_functionality():
    # Simulate user login
    user = login(username='testuser', password='password123')
    assert user.is_authenticated, 'User should be authenticated'

    # Simulate adding item to cart
    cart = Cart(user)
    cart.add_item('item123')
    assert 'item123' in cart.items, 'Item should be in cart'

    # Simulate checkout process
    order = cart.checkout()
    assert order.status == 'confirmed', 'Order should be confirmed'

    # Simulate order history retrieval
    history = user.get_order_history()
    assert order in history, 'Order should appear in history'

    # Final system state check
    assert system.is_operational(), 'System should be operational'

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Call login function with username and password	User login page simulated, credentials submitted	Check user.is_authenticated is True	PASS
2	Create cart for user and add item 'item123'	Cart contains items for the logged-in user	Verify 'item123' is in cart.items	PASS
3	Perform checkout on cart	Order created with status 'confirmed'	Check order.status equals 'confirmed'	PASS
4	Retrieve user's order history	User's order history includes recent order	Verify order is in user's order history	PASS
5	Check overall system operational status	System running with no errors	Assert system.is_operational() returns True	PASS

Failure Scenario

Failing Condition: If user login fails or order status is not confirmed

Execution Trace Quiz - 3 Questions

What does the test verify after adding an item to the cart?

A The item is present in the cart

B The user is logged out

C The order is confirmed

D The system is down

Key Result

System testing verifies the complete software working together, not just parts. It ensures the whole user journey and system health are correct.