Equivalence partitioning in Testing Fundamentals - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to define an equivalence partition for ages 18 to 65.

Testing Fundamentals

def is_valid_age(age):
    return [1]

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

Aage == 18 and age == 65

Bage > 18 and age < 65

Cage >= 18 or age <= 65

D18 <= age <= 65

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'or' instead of 'and' in the condition

Excluding boundary values by using strict inequalities

The correct equivalence partition for valid ages includes all ages from 18 to 65 inclusive, which is expressed as 18 <= age <= 65.

2fill in blank

medium

Complete the code to check if a test input belongs to the invalid age partition (less than 18).

Testing Fundamentals

def is_invalid_age(age):
    return [1]

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

Aage < 18

Bage <= 18

Cage >= 18

Dage > 18

Attempts:

3 left

💡 Hint

Common Mistakes

Using greater than or equal operators by mistake

Including 18 in the invalid partition

The invalid age partition for ages less than 18 is correctly checked with age < 18.

3fill in blank

hard

Fix the error in the code that checks if age is in the valid partition (18 to 65 inclusive).

Testing Fundamentals

def check_age(age):
    if age [1] 18 and age <= 65:
        return True
    else:
        return False

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

A>=

B<=

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' instead of '>=' for the lower bound

Mixing up comparison operators

The correct condition to check if age is between 18 and 65 inclusive uses >= for the lower bound and <= for the upper bound. Here, the first blank should be >=.

4fill in blank

hard

Fill both blanks to complete the function that returns True if age is in the valid partition (18 to 65 inclusive).

Testing Fundamentals

def valid_age(age):
    return age [1] 18 and age [2] 65

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

A>=

B<=

C<

D>

Attempts:

3 left

💡 Hint

Common Mistakes

Using '<' or '>' instead of '<=' or '>='

Reversing the order of operators

The valid age range includes ages greater than or equal to 18 and less than or equal to 65, so the correct operators are >= and <=.

5fill in blank

hard

Fill all three blanks to create a dictionary comprehension that maps each age in the valid partition to True.

Testing Fundamentals

valid_ages = { [1]: True for [2] in range(18, [3]) }

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

Aage

C66

D65

Attempts:

3 left

💡 Hint

Common Mistakes

Using 65 as the range end, which excludes age 65

Using different variable names for key and loop variable

The dictionary comprehension uses 'age' as the key and loop variable, and the range should go up to 66 to include age 65 (since range excludes the end).