Automation ROI calculation in Testing Fundamentals - Practice Problems & Coding Challenges

Challenge - 5 Problems

🧠 Conceptual

intermediate

Understanding Automation ROI Components

Which of the following factors does NOT directly affect the calculation of Automation ROI?

A Number of manual testers hired after automation

B Time saved per test cycle due to automation

C Initial cost of automation tool purchase and setup

D Maintenance cost of automated test scripts

💡 Hint

Think about what costs and savings are directly related to automation itself.

Automation ROI focuses on costs and savings related to automation efforts. Hiring more manual testers after automation is unrelated and does not directly impact ROI.

❓ Predict Output

intermediate

Calculate ROI from Automation Savings

What is the output of the following Python code that calculates automation ROI percentage?

Testing Fundamentals

initial_investment = 5000
annual_savings = 15000
roi = ((annual_savings - initial_investment) / initial_investment) * 100
print(f"Automation ROI: {roi:.2f}%")

A Automation ROI: 200.00%

B Automation ROI: 300.00%

C Automation ROI: 250.00%

D Automation ROI: 150.00%

💡 Hint

Calculate (15000 - 5000) / 5000 * 100 carefully.

ROI = ((15000 - 5000) / 5000) * 100 = (10000 / 5000) * 100 = 2 * 100 = 200%

❓ assertion

advanced

Validating Automation ROI Calculation Logic

Which assertion correctly tests that the ROI calculation function returns the expected ROI percentage?

Testing Fundamentals

def calculate_roi(initial_cost, annual_savings):
    return ((annual_savings - initial_cost) / initial_cost) * 100

roi = calculate_roi(4000, 12000)

A assert roi == 300

B assert roi == 200

C assert roi == 250

D assert roi == 150

💡 Hint

Calculate ROI manually: ((12000 - 4000) / 4000) * 100

ROI = (8000 / 4000) * 100 = 2 * 100 = 200

🔧 Debug

advanced

Identify the Bug in ROI Calculation Code

What error will the following code produce when calculating automation ROI?

Testing Fundamentals

def automation_roi(initial_cost, annual_savings):
    roi = (annual_savings - initial_cost) / initial_cost * 100
    return roi

print(automation_roi(0, 10000))

A ValueError

B TypeError

C ZeroDivisionError

D No error, outputs 10000

💡 Hint

What happens if you divide by zero in Python?

Dividing by zero causes a ZeroDivisionError in Python.

❓ framework

expert

Best Practice for Automation ROI Reporting Framework

Which approach best ensures accurate and maintainable automation ROI reporting in a test automation framework?

A Hardcode ROI values in test scripts for quick reference

B Ignore ROI calculations and focus only on test pass/fail results

C Calculate ROI manually outside the framework and paste results into test logs

D Use a separate configuration file to store cost and savings data, and calculate ROI dynamically in reports

💡 Hint

Think about maintainability and automation of reporting.

Storing data separately and calculating ROI dynamically allows easy updates and accurate reporting without changing test scripts.