Usability testing in Testing Fundamentals - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Key Goal of Usability Testing

What is the main goal of usability testing in software development?

A To evaluate how easy and pleasant the software is for users

B To find security vulnerabilities in the software

C To check if the software meets all technical requirements

D To test the software's performance under heavy load

💡 Hint

Think about the user's experience and satisfaction.

Usability testing focuses on how easy and enjoyable the software is for real users, not on technical or security aspects.

❓ Predict Output

intermediate

Usability Test Report Summary Output

Given this simple usability test report code snippet, what will be the printed summary?

Testing Fundamentals

def usability_report(errors, time_taken):
    if errors == 0 and time_taken < 5:
        return 'Excellent usability'
    elif errors <= 2 and time_taken < 10:
        return 'Good usability'
    else:
        return 'Needs improvement'

print(usability_report(1, 7))

A Good usability

B SyntaxError

C Needs improvement

D Excellent usability

💡 Hint

Check the conditions for errors and time_taken carefully.

With 1 error and 7 minutes, the function returns 'Good usability' because errors <= 2 and time_taken < 10.

❓ assertion

advanced

Valid Assertion for Usability Test Success

Which assertion correctly checks that the usability test passed when the success rate is at least 90%?

Testing Fundamentals

success_rate = 0.92

A assert success_rate > 0.9, 'Usability test failed'

B assert success_rate >= 0.9, 'Usability test failed'

C assert success_rate == 0.9, 'Usability test failed'

D assert success_rate < 0.9, 'Usability test failed'

💡 Hint

Think about including 90% as a passing rate.

The assertion must allow success_rate to be equal to or greater than 0.9 to pass the test.

🔧 Debug

advanced

Identify the Usability Test Locator Bug

In a usability test automation script, which locator will cause a failure when trying to find the 'Submit' button by its visible text?

Testing Fundamentals

submit_button_locators = {
    'A': "//button[text()='Submit']",
    'B': "//button[contains(text(), 'Submit')]",
    'C': "//button[@name='submit']",
    'D': "//button[text()='submit']"
}

A Locator A will fail because it is case sensitive and matches exactly 'Submit'

B Locator B will fail because contains() does not work with text()

C Locator C will fail because @name='submit' is not the visible text

D Locator D will fail because it looks for 'submit' in lowercase which may not match

💡 Hint

Check the case sensitivity of the text() function in XPath.

XPath text() is case sensitive, so looking for 'submit' lowercase will fail if the button text is 'Submit' with uppercase S.

❓ framework

expert

Best Practice for Usability Test Automation Framework

Which design choice best supports maintainability and clarity in a usability test automation framework?

A Hardcode all test data inside test functions for quick access

B Mix test logic and UI locators directly in test scripts for simplicity

C Use a Page Object Model to separate UI locators from test logic

D Avoid using any abstraction layers to reduce code size

💡 Hint

Think about how to keep tests easy to update when UI changes.

Page Object Model separates UI locators from test logic, making tests easier to maintain and understand.