Why systematic techniques improve coverage in Testing Fundamentals - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to show why systematic testing helps cover all cases.

Testing Fundamentals

test_cases = ['input1', 'input2', 'input3']
for case in [1]:
    print(f"Testing {case}")

Drag options to blanks, or click blank then click option'

Arandom.sample(test_cases, 2)

Btest_cases

C[]

DNone

Attempts:

3 left

💡 Hint

Common Mistakes

Using a subset of test cases by mistake.

Using the full list test_cases ensures all cases are tested systematically.

2fill in blank

medium

Complete the code to check if all inputs are covered by the tests.

Testing Fundamentals

all_inputs = {'a', 'b', 'c', 'd'}
tested_inputs = {'a', 'b', 'c'}
coverage = tested_inputs [1] all_inputs
print(coverage)

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A!=

B>=

C==

D<

Attempts:

3 left

💡 Hint

Common Mistakes

Using < or > which only check subset or superset.

Using == checks if tested inputs exactly match all inputs, ensuring full coverage.

3fill in blank

hard

Fix the error in the code that tries to generate all combinations for testing.

Testing Fundamentals

from itertools import product
inputs1 = ['x', 'y']
inputs2 = ['1', '2']
all_combinations = list(product(inputs1, [1]))
print(all_combinations)

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Ainputs2

Binputs1

CNone

D['3', '4']

Attempts:

3 left

💡 Hint

Common Mistakes

Using the same list twice or a wrong list.

To get all pairs, use inputs2 as the second input list in product.

4fill in blank

hard

Fill both blanks to create a test that only includes inputs longer than 3 characters.

Testing Fundamentals

inputs = ['cat', 'lion', 'tiger', 'dog']
filtered_tests = [[1] for word in inputs if len(word) [2] 3]
print(filtered_tests)

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Aword.upper()

Bword.lower()

C>

D<=

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong comparison operator or no transformation.

We select words with length greater than 3 and convert them to uppercase for testing.

5fill in blank

hard

Fill all three blanks to build a dictionary of test results for inputs with length > 2.

Testing Fundamentals

inputs = ['go', 'run', 'jump', 'sit']
results = { [1]: [2] for word in inputs if len(word) [3] 2 }
print(results)

Drag options to blanks, or click blank then click option'

Aword

Blen(word)

C>

D{

Attempts:

3 left

💡 Hint

Common Mistakes

Missing dictionary braces or wrong filter condition.

The dictionary comprehension starts with {, uses word as key, length as value, and filters words longer than 2.