Why white-box testing examines code internals in Testing Fundamentals - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show what white-box testing focuses on.

Testing Fundamentals

def test_function():
    # White-box testing examines [1] of the code
    pass

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Ainternal logic

Buser interface

Cnetwork speed

Ddatabase size

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing white-box testing with testing user interface or performance.

White-box testing looks inside the code to check the internal logic and structure.

2fill in blank

medium

Complete the code to identify a white-box testing technique.

Testing Fundamentals

def test_coverage():
    # White-box testing uses [1] to check which parts of code run
    pass

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Ablack-box methods

Bload testing

Ccode coverage

Duser surveys

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing black-box or performance testing terms instead.

Code coverage measures which lines or branches of code are executed during tests, a white-box technique.

3fill in blank

hard

Fix the error in the white-box testing description.

Testing Fundamentals

def white_box_test():
    '''White-box testing ignores [1] and focuses on outputs.'''
    pass

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Aexternal behavior

Buser inputs

Ccode internals

Dinternal code

Attempts:

3 left

💡 Hint

Common Mistakes

Confusing white-box with black-box testing focus.

White-box testing does not ignore internal code; it focuses on it. It does not focus only on external behavior.

4fill in blank

hard

Fill both blanks to complete the white-box testing example.

Testing Fundamentals

def test_branch_coverage():
    for condition in conditions:
        if condition [1] True:
            execute_path = [2]
        else:
            execute_path = 'other'
    return execute_path

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A==

B!=

C'path1'

D'path2'

Attempts:

3 left

💡 Hint

Common Mistakes

Using '!=' instead of '==' for condition check.

Choosing wrong path string.

Branch coverage tests both true and false paths. The condition should be checked with '==' and the path set accordingly.

5fill in blank

hard

Fill all three blanks to complete the white-box testing dictionary comprehension.

Testing Fundamentals

coverage = {func[1]: calls for func, calls in call_counts.items() if calls [2] 0 and func.startswith([3])}

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A()

B>

C'test_'

D[]

Attempts:

3 left

💡 Hint

Common Mistakes

Using brackets instead of parentheses for function call.

Using '<' instead of '>'.

The code builds a dictionary of functions called more than zero times and whose names start with 'test_'.