Testing Throughout The Software Life Cycle
The document discusses different types of testing at various stages of software development including:
1) Functional testing which verifies that the software functions as specified. This includes black box and white box testing.
2) Non-functional testing which evaluates how well the software works, including performance, load, stress, usability, reliability and portability testing.
3) Structural testing which examines the internal structure or architecture of the software. This includes measuring code coverage to ensure all parts are tested.
4) Regression testing which checks that fixes to defects do not introduce new bugs and that the software still meets requirements after changes. Confirmation testing re-runs tests after defects are fixed
Testing throughout the software life cycle & statistic techniquesNovika Damai Yanti
CATEGORIES OF TEST DESIGN TECHNIQUES
Recall reasons that both specification-based (black-box) and structure-based (white-box) approaches to test case design are useful, and list the common techniques for each. (K1)
Testing throughout the software life cycle & statistic techniquesNovika Damai Yanti
CATEGORIES OF TEST DESIGN TECHNIQUES
Recall reasons that both specification-based (black-box) and structure-based (white-box) approaches to test case design are useful, and list the common techniques for each. (K1)
This chapter discusses the most commonly applied software development models, test levels and test types. Maintenance can be seen as a specific instance of a development process.
Now to answer, “What is Testing?” we can go by the famous definition of Myers, which says, “Testing is the process of executing a program with the intent of finding errors”
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CHAPTER 15Security Quality Assurance TestingIn this chapter yoJinElias52
CHAPTER 15
Security Quality Assurance Testing
In this chapter you will
• Explore the aspects of testing software for security
• Learn about standards for software quality assurance
• Discover the basic approaches to functional testing
• Examine types of security testing
• Explore the use of the bug bar and defect tracking in an effort to improve the SDL process
Testing is a critical part of any development process and testing in a secure development lifecycle (SDL) environment is an essential part of the security process. Designing in security is one step, coding is another, and testing provides the assurance that what was desired and planned becomes reality. Validation and verification have been essential parts of quality efforts for decades, and software is no exception. This chapter looks at how and what to test to obtain an understanding of the security posture of software.
Standards for Software Quality Assurance
Quality is defined as fitness for use according to certain requirements. This can be different from security, yet there is tremendous overlap in the practical implementation and methodologies employed. In this regard, lessons can be learned from international quality assurance standards, for although they may be more expansive in goals than just security, they can make sense there as well.
ISO 9216
The International Standard ISO/IEC 9216 provides guidance for establishing quality in software products. With respect to testing, this standard focuses on a quality model built around functionality, reliability, and usability. Additional issues of efficiency, maintainability, and portability are included in the quality model of the standard. With respect to security and testing, it is important to remember the differences between quality and security. Quality is defined as fitness for use, or conformance to requirements. Security is less cleanly defined, but can be defined by requirements. One issue addressed by the standard is the human side of quality, where requirements can shift over time, or be less clear than needed for proper addressing by the development team. These are common issues in all projects, and the standard works to ensure a common understanding of the goals and objectives of the projects as described by requirements. This information is equally applicable to security concerns and requirements.
SSE-CMM
The Systems Security Engineering Capability Maturity Model (SSE-CMM) is also known as ISO/IEC 21827, and is an international standard for the secure engineering of systems. The SSE-CMM addresses security engineering activities that span the entire trusted product or secure system lifecycle, including concept definition, requirements analysis, design, development, integration, installation, operations, maintenance, and decommissioning. The SSE-CMM is designed to be employed as a tool to evaluate security engineering practices and assist in the definition of improvements to them. The SSE-CMM is organized into p ...
This chapter discusses the most commonly applied software development models, test levels and test types. Maintenance can be seen as a specific instance of a development process.
Now to answer, “What is Testing?” we can go by the famous definition of Myers, which says, “Testing is the process of executing a program with the intent of finding errors”
My experiences on Unit Testing in the Android environment. I hope they are useful to you too.
A brief tour about how to make Android Studio run your unit tests (logical and instrumentation) and how to start creating tests for your app.
Fundamentals of software testing, testing levels and types, testing throughout the software life-cycle, bug report and bug severity.
Automated tests via selenium web-driver with a demo.
CHAPTER 15Security Quality Assurance TestingIn this chapter yoJinElias52
CHAPTER 15
Security Quality Assurance Testing
In this chapter you will
• Explore the aspects of testing software for security
• Learn about standards for software quality assurance
• Discover the basic approaches to functional testing
• Examine types of security testing
• Explore the use of the bug bar and defect tracking in an effort to improve the SDL process
Testing is a critical part of any development process and testing in a secure development lifecycle (SDL) environment is an essential part of the security process. Designing in security is one step, coding is another, and testing provides the assurance that what was desired and planned becomes reality. Validation and verification have been essential parts of quality efforts for decades, and software is no exception. This chapter looks at how and what to test to obtain an understanding of the security posture of software.
Standards for Software Quality Assurance
Quality is defined as fitness for use according to certain requirements. This can be different from security, yet there is tremendous overlap in the practical implementation and methodologies employed. In this regard, lessons can be learned from international quality assurance standards, for although they may be more expansive in goals than just security, they can make sense there as well.
ISO 9216
The International Standard ISO/IEC 9216 provides guidance for establishing quality in software products. With respect to testing, this standard focuses on a quality model built around functionality, reliability, and usability. Additional issues of efficiency, maintainability, and portability are included in the quality model of the standard. With respect to security and testing, it is important to remember the differences between quality and security. Quality is defined as fitness for use, or conformance to requirements. Security is less cleanly defined, but can be defined by requirements. One issue addressed by the standard is the human side of quality, where requirements can shift over time, or be less clear than needed for proper addressing by the development team. These are common issues in all projects, and the standard works to ensure a common understanding of the goals and objectives of the projects as described by requirements. This information is equally applicable to security concerns and requirements.
SSE-CMM
The Systems Security Engineering Capability Maturity Model (SSE-CMM) is also known as ISO/IEC 21827, and is an international standard for the secure engineering of systems. The SSE-CMM addresses security engineering activities that span the entire trusted product or secure system lifecycle, including concept definition, requirements analysis, design, development, integration, installation, operations, maintenance, and decommissioning. The SSE-CMM is designed to be employed as a tool to evaluate security engineering practices and assist in the definition of improvements to them. The SSE-CMM is organized into p ...
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Testing throughout the software life cycle (test types)
1. Testing Throughout The Software
Life Cycle
Presented by
Tyas Setyo Indria
11453201869
ProgramStudiS1 SistemInformasi
FakultasSainsDanTeknologi
UniversitasIslamSultanSyarif KasimRiau
2017
TEST TYPES: THE TARGETS OF TESTING
Reference Graham et.al (2006)
2. Test types are introduced as a means of clearly defining the objective of a certain test level for a
programme or project. We need to think about different types of testing because testing the func
tionality of the component or system may not be sufficient at each level to meet the overall test
objectives. Focusing the testing on a specific test objective and, therefore, selecting the appropria
te type of test helps making and communicating decisions against test objectives easier.
A test type is focused on a particular test objective, which could be the testing of a function to b
e performed by the component or system; a non-functional quality characteristic, such as reliabilit
y or usability; the structure or architecture of the component or system; or related to changes, i.e.
confirming that defects have been fixed (confirmation testing, or re-testing) and looking for unint
ended changes (regression testing). Depending on its objectives, testing will be organized differen
tly. For example, component testing aimed at performance would be quite different to componen
t testing aimed at achieving decision coverage.
Test Type
3. Testing of function (functional testing)
Functional testing considers the specified behavior and i
s often also referred to as black-box testing. This is not
entirely true, since black-box testing also includes non-fu
nctional testing
The function of a system (or component) is 'what it does'. Th
is is typically described in a requirements specification, a fun
ctional specification, or in use cases. There may be some fun
ctions that are 'assumed' to be provided that are not docum
ented that are also part of the requirement for a system, tho
ugh it is difficult to test against undocumented and implicit r
equirements. Functional tests are based on these functions, d
escribed in documents or understood by the testers and may
be performed at all test levels (e.g. test for components may
be based on a component specification).
4. Testing of function (functional testing)
Function (or functionality) testing can, based upon ISO 9126 , be d
one focusing on suitability, interoperability, security, accuracy and
compliance. Security testing, for example, investigates the functions
(e.g. a firewall) relating to detection of threats, such as viruses, from
malicious outsiders It has been replaced by ISO/IEC 25010:2011
5. Testing of function (functional testing)
Testing functionality can be done from two perspectives:
requirements-based or business-process-based.
Requirements-based testing uses a specification of the functional requirements
for the system as the basis for designing tests. A good way to start is to use the
table of contents of the requirements specification as an initial test inventory or
list of items to test (or not to test). We should also prioritize the requirements b
ased on risk criteria (if this is not already done in the specification) and use this
to prioritize the tests. This will ensure that the most important and most critical
tests are included in the testing effort.
Business-process-based testing uses knowledge of the business processes. Busi
ness processes describe the scenarios involved in the day-to-day business use of
the system. For example, a personnel and payroll system may have a business pr
ocess along the lines of: someone joins the company, he or she is paid on a reg
ular basis, and he or she finally leaves the company. Use cases originate from ob
ject-oriented development, but are nowadays popular in many development life
cycles. They also take the business processes as a starting point, although they s
tart from tasks to be performed by users. Use cases are a very useful basis for te
st cases from a business perspective.
6. Testing of software product characteri
stics (non-functional testing)
Non-functional testing, as functional testing, is performed at all test levels. Non-fu
nctional testing includes, but is not limited to, performance testing, load testing,
stress testing, usability testing, maintainability testing, reliability testing and porta
bility testing. It is the testing of 'how well' the system works.
Many have tried to capture software quality in a collection of characteristics a
nd related sub-characteristics. In these models some elementary characteristic
s keep on reappearing, although their place in the hierarchy can differ. The Int
ernational Organization for Standardization (ISO) has defined a set of quality c
haracteristics [ISO/IEC 9126, 2001]. This set reflects a major step towards cons
ensus in the IT industry and thereby addresses the general notion of software
quality. The ISO 9126 standard defines six quality characteristics and the sub
division of each quality characteristic into a number of sub-characteristics. This
standard is getting more and more recognition in the industry, enabling devel
opment, testing and their stakeholders to use a common terminology for quali
ty characteristics and thereby for non-functional testing.
7. Testing of software product chara
cteristics (non-functional testing)
The characteristics and their sub-characteristics are, respectively:
functionality, which consists of five sub-characteristics: suitability, accuracy,
security, interoperability and compliance; this characteristic deals with func
tional testing as described in Section 2.3.1;
reliability, which is defined further into the sub-characteristics maturity (ro
bustness), fault-tolerance, recoverability and compliance;
usability, which is divided into the sub-characteristics understandability, le
arnability, operability, attractiveness and compliance;
efficiency, which is divided into time behavior (performance), resource uti l
ization and compliance;
maintainability, which consists of five sub-characteristics: analyzability, cha
ngeability, stability, testability and compliance;
portability, which also consists of five sub-characteristics: adaptability, inst
allability, co-existence, replaceability and compliance.
8. Testing of software structure/architec
ture (structural testing)
The third target of testing is the structure of the system or compone
nt. If we are talking about the structure of a system, we may call it th
e system architecture. Structural testing is often referred to as 'white
-box' or 'glass-box' because we are interested in what is happening '
inside the box'.
At component level, and to a lesser extent at component integration testing, t
here is good tool support to measure code coverage. Coverage measurement
tools assess the percentage of executable elements (e.g. statements or decisio
n outcomes) that have been exercised (i.e. covered) by a test suite. If coverag
e is not 100%, then additional tests may need to be written and run to cover t
hose parts that have not yet been exercised. This of course depends on the ex
it criteria.
The techniques used for structural testing are structure-based techniques, also
referred to as white-box techniques. Control flow models are often used to s
upport structural testing.
9. Testing related to changes (confirmati
on and regression testing)
Confirmation testing (re-testing)
When a test fails and we determine that the cause of the failure is a software
defect, the defect is reported, and we can expect a new version of the softwar
e that has had the defect fixed. In this case we will need to execute the test a
gain to confirm that the defect has indeed been fixed. This is known as confir
mation testing (also known as re-testing).
When doing confirmation testing, it is important to ensure that the test is exe
cuted in exactly the same way as it was the first time, using the same inputs,
data and environment. If the test now passes does this mean that the software
is now correct? Well, we now know that at least one part of the software is cor
rect where the defect was. But this is not enough. The fix may have introduced
or uncovered a different defect elsewhere in the software. The way to detect t
hese 'unexpected side-effects' of fixes is to do regression testing.
10. Testing of software structure/architect
ure (structural testing)
Regression testing
The term 'regression testing' is something of a misnomer. It would be better if it w
ere called 'anti-regression' testing because we are executing tests with the intent of
checking that the system has not regressed (that is, it does not now have more defe
cts in it as a result of some change). More specifically, the purpose of regression test
ing is to verify that modifications in the software or the environment have not cause
d unintended adverse side effects and that the system still meets its requirements.
It is common for organizations to have what is usually called a regression test suite
or regression test pack. This is a set of test cases that is specifically used for regressi
on testing. They are designed to collectively exercise most functions (certainly the m
ost important ones) in a system but not test any one in detail. It is appropriate to h
ave a regression test suite at every level of testing (component testing, integration t
esting, system testing, etc.). All of the test cases in a regression test suite would be
executed every time a new version of software is produced and this makes them ide
al candidates for automation. If the regression test suite is very large it may be mor
e appropriate to select a subset for execution.