Defect metrics in Testing Fundamentals - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to calculate the defect density.

Testing Fundamentals

defect_density = total_defects / [1]

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

Atotal_lines_of_code

Btotal_test_cases

Ctotal_modules

Dtotal_testers

Attempts:

3 left

💡 Hint

Common Mistakes

Using total_test_cases instead of total_lines_of_code

Dividing by total_modules which is unrelated

Defect density is calculated as the number of defects divided by the total lines of code.

2fill in blank

medium

Complete the code to calculate the defect removal efficiency (DRE).

Testing Fundamentals

DRE = defects_removed_during_testing / [1]

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

Atotal_defects_found

Bdefects_removed_after_release

Cdefects_found_in_production

Dtotal_defects

Attempts:

3 left

💡 Hint

Common Mistakes

Using only defects found during testing as denominator

Using defects found in production only

DRE is the ratio of defects removed during testing to the total defects (found before and after release).

3fill in blank

hard

Fix the error in the code to calculate the defect leakage rate.

Testing Fundamentals

defect_leakage = defects_found_in_production / [1]

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

Adefects_found_during_testing

Btotal_defects

Cdefects_found_in_production

Ddefects_removed_during_testing

Attempts:

3 left

💡 Hint

Common Mistakes

Dividing by defects found during testing only

Dividing by defects found in production (same numerator and denominator)

Defect leakage rate is defects found in production divided by total defects.

4fill in blank

hard

Fill both blanks to calculate the defect removal efficiency as a percentage.

Testing Fundamentals

DRE_percentage = ([1] / [2]) * 100

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

Adefects_removed_during_testing

Btotal_defects

Cdefects_found_in_production

Ddefects_removed_after_release

Attempts:

3 left

💡 Hint

Common Mistakes

Swapping numerator and denominator

Using defects found in production as numerator

DRE percentage is defects removed during testing divided by total defects, multiplied by 100.

5fill in blank

hard

Fill all three blanks to calculate defect density per thousand lines of code.

Testing Fundamentals

defect_density = ([1] / [2]) * [3]

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

Atotal_defects

Btotal_lines_of_code

C1000

D100

Attempts:

3 left

💡 Hint

Common Mistakes

Multiplying by 100 instead of 1000

Swapping numerator and denominator

Defect density per KLOC is total defects divided by total lines of code, multiplied by 1000.