Unit testing in Testing Fundamentals - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define a simple unit test method using Python's unittest framework.

Testing Fundamentals

import unittest

class TestMath(unittest.TestCase):
    def test_addition(self):
        self.assertEqual(2 + 3, [1])

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

A7

B5

C4

D6

Attempts:

3 left

💡 Hint

Common Mistakes

Using a wrong expected value like 6 or 4.

Forgetting that assertEqual compares the first and second arguments.

The sum of 2 + 3 is 5, so the assertion should check for 5.

2fill in blank

medium

Complete the code to run all unit tests when the script is executed directly.

Testing Fundamentals

if __name__ == '__main__':
    [1]()

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

Aunittest.main

Brun_tests

Cmain.unittest

Dtest.run

Attempts:

3 left

💡 Hint

Common Mistakes

Using a function name that does not exist like run_tests.

Calling main.unittest instead of unittest.main.

Calling unittest.main() runs all tests defined in the script.

3fill in blank

hard

Fix the error in the test method to correctly check if a list contains an element.

Testing Fundamentals

def test_contains(self):
    items = ['apple', 'banana', 'cherry']
    self.assertTrue([1] in items)

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

A'grape'

Bbanana

C'banana'

Ditems

Attempts:

3 left

💡 Hint

Common Mistakes

Using banana without quotes causing a NameError.

Checking for an element not in the list like 'grape'.

To check if 'banana' is in the list, it must be a string literal with quotes.

4fill in blank

hard

Fill both blanks to create a dictionary comprehension that maps words to their lengths only if length is greater than 3.

Testing Fundamentals

lengths = {word: [1] for word in words if [2]

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

Alen(word)

Blen(word) > 3

Clen(word) < 3

Dword

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong comparison operator like < instead of >.

Mapping word to word instead of word to length.

The dictionary maps each word to its length using len(word). The condition filters words with length greater than 3.

5fill in blank

hard

Fill all three blanks to create a test that asserts a dictionary comprehension filters positive values correctly.

Testing Fundamentals

result = [1]([2]: [3] for [2] in data if data[[2]] > 0)

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

Adict

Bk

Cdata[k]

Dv

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'v' as the key variable which is undefined.

Not using dict() to convert comprehension to dictionary.

The dict() function creates a dictionary from key-value pairs. 'k' is used as the key variable, and data[k] as the value. The comprehension filters keys with positive values.