Why Is It Important to Have Testable Requirements?

1
Why Is It Important to Have Testable
Requirements?
Quality is a Rule
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Why Is It Important to Have Testable Requirements?

• It is very important to have testable
  requirements in software projects. The reason is
  it helps to reduce development time by avoiding
  expensive software bugs in later stages of the
  software development life cycle.

Office in Ukraine Phone [phone] E-mail
contact (at) qa-testlab.com Address 154a,
Borschagivska str., Kiev, Ukraine http//qatestlab
.com/
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Why Is It Important to Have Testable Requirements?
The Price to Correct a Software Bug

• The price of correcting a software defect is
  lowest in the requirements stage. The reason is
  there are not so much deliverables at the start
  of a project to fix if a defect is detected.
• As soon as the project moves into posterior
  stages of the development of software product,
  the price of correcting a bug increases
  extremely, since there are more deliverables
  influenced by the fixing of every bug, such as a
  design document or the code itself.

Office in Ukraine Phone [phone] E-mail
contact (at) qa-testlab.com Address 154a,
Borschagivska str., Kiev, Ukraine http//qatestlab
.com/
4
Why Is It Important to Have Testable Requirements?
The Price to Correct a Software Bug 
Stage Cost Ratio
Requirements 1-3
Design 3-6
Coding 10-12
Unit Testing 15-40
Acceptance 30-60
Testing 45-10000
Production gt10000

Office in Ukraine Phone [phone] E-mail
contact (at) qa-testlab.com Address 154a,
Borschagivska str., Kiev, Ukraine http//qatestlab
.com/
5
Why Is It Important to Have Testable Requirements?
The Dispensation of Software Bugs

• According to the statistics main reason of 50 of
  all the defects found in projects is a result of
  bugs introduced in the requirements stage.
• Approximately a half of bugs rooted in
  requirements are due to poorly written,
  equivocal, unintelligible and wrong requirements.
  So there is plenty of room for betterment for
  writing distinct, brief, unequivocal and complete
  requirements.

Office in Ukraine Phone [phone] E-mail
contact (at) qa-testlab.com Address 154a,
Borschagivska str., Kiev, Ukraine http//qatestlab
.com/
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Quality is a Rule
Quality is a Rule
Thank You !
Office in Ukraine Phone [phone] E-mail
contact (at) qa-testlab.com Address 154a,
Borschagivska str., Kiev, Ukraine http//qatestlab
.com/