Use case testing in Testing Fundamentals - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Identifying Use Case Testing Purpose

What is the main purpose of use case testing in software quality assurance?

A To check the software's performance under heavy load

B To test the internal code structure and logic paths of the software

C To find security vulnerabilities by simulating attacks

D To verify the system behaves correctly for all possible user interactions described in use cases

💡 Hint

Think about what use cases describe and what testing them ensures.

Use case testing focuses on validating the system's behavior from the user's perspective, ensuring all user scenarios work as expected.

❓ Predict Output

intermediate

Output of Use Case Test Scenario Execution

Given a use case test scenario that logs steps executed, what will be the output after running this test?

Testing Fundamentals

steps_executed = []

use_case_steps = ['Login', 'Select Item', 'Add to Cart', 'Checkout']

for step in use_case_steps:
    steps_executed.append(f"Executed: {step}")

print(steps_executed)

A ["Executed: Login", "Executed: Select Item", "Executed: Add to Cart", "Executed: Checkout"]

B ["Login", "Select Item", "Add to Cart", "Checkout"]

C ["Executed Login", "Executed Select Item", "Executed Add to Cart", "Executed Checkout"]

D SyntaxError: invalid syntax

💡 Hint

Look at how strings are formatted inside the loop.

The code appends strings with the prefix 'Executed: ' followed by each step name, so the output list contains these formatted strings.

❓ assertion

advanced

Correct Assertion for Use Case Test Result

Which assertion correctly verifies that a use case test returned the expected success message?

Testing Fundamentals

def test_use_case_result():
    result = run_use_case_test()
    expected_message = "Use case executed successfully"
    # Choose the correct assertion below

A assert result == expected_message

B assert result != expected_message

C assert result is None

D assert result > expected_message

💡 Hint

The assertion should confirm the result matches the expected message exactly.

Using assert result == expected_message checks that the test output matches the expected success message exactly, which is the correct way to verify test success.

🔧 Debug

advanced

Debugging a Use Case Test Failure

Consider this use case test code snippet. It fails unexpectedly. What is the cause of failure?

Testing Fundamentals

def test_login_use_case():
    user_input = {'username': 'user1', 'password': 'pass123'}
    response = login(user_input)
    assert response.status_code == 200  # Line with error

A NameError because 'login' function is undefined

B SyntaxError due to using '=' instead of '==' in the assertion

C AssertionError because status_code is not 200

D TypeError because response.status_code is not an integer

💡 Hint

Check the assertion syntax carefully.

The assertion uses a single '=' which is assignment, not comparison. This causes a SyntaxError.

❓ framework

expert

Best Practice for Organizing Use Case Tests in a Framework

In a test automation framework, how should use case tests be organized for clarity and maintainability?

A Mix use case tests with unrelated unit tests in the same test files

B Put all use case tests in a single large file regardless of use case

C Group tests by use case names in separate test classes or files, each containing all related scenarios

D Write use case tests only as manual test scripts, not automated

💡 Hint

Think about how grouping helps when tests grow in number.

Organizing tests by use case in separate classes or files improves readability, maintenance, and helps testers find related tests easily.