Automation ROI calculation in Testing Fundamentals - Test Execution Trace

Test Overview

This test calculates the Return on Investment (ROI) for automation in software testing. It verifies that the ROI formula correctly computes the value based on given inputs for manual and automation costs and savings.

Test Code - unittest

Testing Fundamentals

import unittest

class TestAutomationROICalculation(unittest.TestCase):
    def calculate_roi(self, manual_cost, automation_cost, savings):
        # ROI = (Savings - Automation Cost) / Automation Cost
        return (savings - automation_cost) / automation_cost

    def test_roi_calculation(self):
        manual_cost = 10000  # Cost of manual testing
        automation_cost = 4000  # Cost of automation setup
        savings = 12000  # Savings from automation

        roi = self.calculate_roi(manual_cost, automation_cost, savings)

        # Expected ROI = (12000 - 4000) / 4000 = 2.0
        self.assertEqual(roi, 2.0, "ROI calculation should be correct")

if __name__ == '__main__':
    unittest.main()

Execution Trace - 5 Steps

Step	Action	System State	Assertion	Result
1	Test starts	Python unittest framework initialized	-	PASS
2	Calls calculate_roi with manual_cost=10000, automation_cost=4000, savings=12000	Function executes calculation	-	PASS
3	Calculates ROI as (12000 - 4000) / 4000 = 2.0	ROI value computed	-	PASS
4	Asserts that ROI equals 2.0	Assertion compares expected and actual ROI	roi == 2.0	PASS
5	Test ends successfully	Test suite completes with no errors	-	PASS

Failure Scenario

Failing Condition: ROI calculation returns incorrect value due to wrong formula or input values

Execution Trace Quiz - 3 Questions

What does the test verify in the ROI calculation?

A That manual testing costs are higher than automation costs

B That automation always saves money

C That the ROI formula correctly computes the return value

D That savings are less than automation cost

Key Result

Always verify your calculation formulas with clear input values and expected results to ensure your automation ROI metrics are accurate and reliable.