What is testing’s contribution to success number two?
Testing provides a means of
directly evaluating the quality of a test object
at various stages in the SDLC.
These measures are used as part of a larger project
management activity, contributing to decisions
to move to the next stage of the SDLC , such as
the release decision
What is contribution three of testing to success?
Testing provides users with indirect representation on the
development project.
Testeres ensure that their understanding of users’ needs
are considered throught the development lifecycte.
The alternative is to involve a representative set of
users as part of the development project, which
is not usually possible due to the high costs
and lack of availability of suitable users
What is contribution four of testing to success?
Testing may also be required to meet contractual or
legal requirements, or to comply with regulatory standards
TESTING and Quality Assurance ( QA )
Is Testing and Quality Assurance the same?
No. testing and QA are not the same
Testing is a form of quality control
What is Quality Control?
QC is a product-oriented, corrective approach
that focuses on those activities supporting the
achievement of appropriate levels of quality
Testing is a major form of quality control,
while others include formal methods
(model checking and proof correctness), simulation and prototyping
What is Quality Assurance?
- is a process oriented, preventive approach that
focuss on the implementation and improvement
of processes - it works on the basis that if a good process is followed
correctly, then it will generate a good product - QA applies to both the development and testing processes,
and is the responsibility of everyone on a project.
How are test results used?
They are used by both QA and QC
How does QC use test results?
- used to fix defects
How does QA use test results?
- used to provide feedback on how well the development and test processes are performing
Error, Defects, Failures and Root Causes
What are errors, defects and failures?
- humans make errors (mistakes)
- which produce defects (faualts, bugs)
- which may result in failures
