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Evaluation of test phase reports can be combined with root-cause analysis to evaluate test process effectiveness in finding faults as early as possible. Such an evaluation could be associated with the analysis of risks. Moreover, the resources that are worth spending on testing should be commensurate with the use/criticality of the application: different techniques have different costs and yield different levels of confidence in product reliability.

Termination

A decision must be made as to how much testing is enough and when a test stage can be terminated. Thoroughness measures, such as achieved code coverage or functional completeness, as well as estimates of fault density or of operational reliability, provide useful support, but are not sufficient in themselves. The decision also involves considerations about the costs and risks incurred by the potential for remaining failures, as opposed to the costs implied by continuing to test.

Test reuse and test patterns

To carry out testing or maintenance in an organized and cost-effective way, the means used to test each part of the software should be reused systematically. This repository of test materials must be under the control of software configuration management, so that changes to software requirements or design can be reflected in changes to the scope of the tests conducted.

The test solutions adopted for testing some application types under certain circumstances, with the motivations behind the decisions taken, form a test pattern which can itself be documented for later reuse in similar projects.

Test activities

Under this topic, a brief overview of test activities is given; as often implied by the following description, successful management of test activities strongly depends on the Software Configuration Management process.

Planning

Like any other aspect of project management, testing activities must be planned. Key aspects of test planning include coordination of personnel, management of available test facilities and equipment (which may include magnetic media, test plans and procedures), and planning for possible undesirable outcomes. If more than one baseline of the software is being maintained, then a major planning consideration is the time and effort needed to ensure that the test environment is set to the proper configuration.

Test-case generation

Generation of test cases is based on the level of testing to be performed and the particular testing techniques. Test cases should be under the control of software configuration management and include the expected results for each test.

Test environment development

The environment used for testing should be compatible with the software engineering tools. It should facilitate development and control of test cases, as well as logging and recovery of expected results, scripts, and other testing materials.

Execution

Execution of tests should embody a basic principle of scientific experimentation: everything done during testing should be performed and documented clearly enough that another person could replicate the results. Hence, testing should be performed in accordance with documented procedures using a clearly defined version of the software under test.

Test results evaluation

The results of testing must be evaluated to determine whether or not the test has been successful. In most cases, “successful” means that the software performed as expected and did not have any major unexpected outcomes. Not all unexpected outcomes are necessarily faults, however, but could be judged to be simply noise. Before a failure can be removed, an analysis and debugging effort is needed to isolate, identify, and describe it. When test results are particularly important, a formal review board may be convened to evaluate them.

Problem reporting/test log

Testing activities can be entered into a test log to identify when a test was conducted, who performed the test, what software configuration was the basis for testing, and other relevant identification information. Unexpected or incorrect test results can be recorded in a problem-reporting system, the data of which form the basis for later debugging and for fixing the problems that were observed as failures during testing. Also, anomalies not classified as faults could be documented in case they later turn out to be more serious than first thought. Test reports are also an input to the change management request process.

Defect tracking

Failures observed during testing are most often due to faults or defects in the software. Such defects can be analyzed to determine when they were introduced into the software, what kind of error caused them to be created (poorly defined requirements, incorrect variable declaration, memory leak, programming syntax error, for example), and when they could have been first observed in the software. Defect-tracking information is used to determine what aspects of software engineering need improvement and how effective previous analyses and testing have been.

References:

http://en.wikipedia.org/wiki/Software_testing, http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-171Fall2003/CourseHome/,http://www.cs.cornell.edu/courses/cs501/2008sp/, http://www.comp.lancs.ac.uk/computing/resources/IanS/SE7/,http://www.ee.unb.ca/kengleha/courses/CMPE3213/IntroToSoftwareEng.htm, http://www.cs.kuleuven.ac.be/~dirk/ada-belgium/aia/contents.html#5,http://www.softwareqatest.com/qatfaq1.html, etc...

Questions & Answers

Define and show all Dipthongs and vowels used in english phonetics
Okendro Reply
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Axmed Reply
Please how can I create an application?
Eric Reply
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Nchor
How do we create a software
Florence Reply
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Louis Reply
what is semantics?
amjad
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Natnael
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Eric
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Natnael
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Natnael
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dawood Reply
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buthayna Reply
A Customer Engineer (CE) is a worker whose primary job scope is to provide a service to customers who have signed a contract with the company.
Fokuo
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buthayna
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ahly
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Fokuo
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Hemant
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Fokuo
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Hemant
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Hemant
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Hemant
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Eric
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Asongafac
pravinkumar
pravin
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pravin
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Michael
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Suraj
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Micheal Reply
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abang
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abang
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gabriel
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Ali
what is 404 error
Hemant Reply
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Hemant
different cmmi level
Sahil Reply
Please I need a teacher
shittu
wht teacher u need?
HANAN
hi
RITESH
is software
RITESH
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Hemant
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HANAN
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amjad
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Mulukutla Reply
what are the benefits of been a software engineer
Amissah
hi
Sunday
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Sunday
kk
Sunday
the benefits are life changing
Louis
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Louis
an ai system
Louis
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Carmela
depends on what your doing
Louis
grasp the whole field by being a problem solver
Louis
mathematics is the language of computing
Louis
but also its the language of the universe
Louis
before you start typing code please plan on pen and paper first with a goal in mind.
Louis
Thank you !!
Carmela
Are you a software engineer already?
Carmela
mathematics is not compulsory for coding
Nadday
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Nadday
what programming language ?
Louis
@Carnela Villegas : Your welcome
Louis
engineering in process student of software engineering
Nadday
@Naddy Naddy: What programming language are you using if i may ask ?
Louis
couple of languages are there not bounded specifically to single one
Nadday
python, Java, Java script, php, swift, go, c# and many more are trending in
Nadday
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Nadday
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Carmela
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Nadday
python is now
Louis
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Louis
it is the fastest growing language to date
Louis
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Louis
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Louis
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Louis
swift for apple
Louis
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Louis
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Louis
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Nadday
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Louis
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Louis
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Nadday
windows also used it
Nadday
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Louis
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Louis
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Louis
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Nadday
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Louis
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Toheeb
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HANAN
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Nadday
@HANAN
Louis
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HANAN
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HANAN
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Nadday
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Nadday
i mean i ask the best top 1 ..which language is that @Nadday Nadday
HANAN
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Louis
@HANAN whatever language your most comfortable with
Louis
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HANAN
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HANAN
go for formal education
Nadday
now i m doing Advance level + HND in Computing and System Develipment... this time i have to finish my assignment but still i didn't finish ... i like to be a software engineer ....but i don't know how to
HANAN
your previous education level @hanan?
Nadday
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HANAN
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Louis
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Louis
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HANAN
your major sujects in hnd
Nadday
I'm a Human lol
Louis
make your basic concepts through c and C ++
Nadday
but yes im a core engineer
Louis
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Louis
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Nadday
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Md
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Ultimate
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mubarek
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Source:  OpenStax, Software engineering. OpenStax CNX. Jul 29, 2009 Download for free at http://cnx.org/content/col10790/1.1
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