FAQ'S Of Software Testing
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Category: Software Testing @ OneStopTesting
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Forum Discription: New to the Club...!!! Don't Worry, We are here for you...!!! Learn the very basics of Software Testing and other pertinent Informations.
URL: http://forum.onestoptesting.com/forum_posts.asp?TID=3356
Printed Date: 19Jul2025 at 7:09am
Topic: FAQ'S Of Software Testing
Posted By: tanushree
Subject: FAQ'S Of Software Testing
Date Posted: 27Oct2007 at 5:35am
FAQ'S Of Software Testing
Q1. What is verification?
A: Verification ensures the
product is designed to deliver all functionality to the customer; it
typically involves reviews and meetings to evaluate documents, plans,
code, requirements and specifications; this can be done with
checklists, issues lists, walkthroughs and inspection meetings.
Q2. What is validation?
A: Validation ensures that
functionality, as defined in requirements, is the intended behavior of
the product; validation typically involves actual testing and takes
place after verifications are completed.
Q3. What is a walkthrough?
A: A walkthrough is an informal
meeting for evaluation or informational purposes. A walkthrough is also
a process at an abstract level. It's the process of inspecting software
code by following paths through the code (as determined by input
conditions and choices made along the way). The purpose of code
walkthroughs is to ensure the code fits the purpose. Walkthroughs also
offer opportunities to assess an individual's or team's competency.
Q4. What is an inspection?
A: An inspection is a formal
meeting, more formalized than a walkthrough and typically consists of
3-10 people including a moderator, reader (the author of whatever is
being reviewed) and a recorder (to make notes in the document). The
subject of the inspection is typically a document, such as a
requirements document or a test plan. The purpose of an inspection is
to find problems and see what is missing, not to fix anything. The
result of the meeting should be documented in a written report.
Attendees should prepare for this type of meeting by reading through
the document, before the meeting starts; most problems are found during
this preparation. Preparation for inspections is difficult, but is one
of the most cost-effective methods of ensuring quality, since bug
prevention is more cost effective than bug detection.
Q5. What is quality?
A: Quality software is software that
is reasonably bug-free, delivered on time and within budget, meets
requirements and expectations and is maintainable. However, quality is
a subjective term. Quality depends on who the customer is and their
overall influence in the scheme of things. Customers of a software
development project include end-users, customer acceptance test
engineers, testers, customer contract officers, customer management,
the development organization's management, test engineers, testers,
salespeople, software engineers, stockholders and accountants. Each
type of customer will have his or her own slant on quality. The
accounting department might define quality in terms of profits, while
an end-user might define quality as user friendly and bug free.
Q6. What is good code?
A: A good code is code that works,
is free of bugs and is readable and maintainable. Organizations usually
have coding standards all developers should adhere to, but every
programmer and software engineer has different ideas about what is best
and what are too many or too few rules. We need to keep in mind that
excessive use of rules can stifle both productivity and creativity.
Peer reviews and code analysis tools can be used to check for problems
and enforce standards.
Q7. What is good design?
A: Design could mean to many
things, but often refers to functional design or internal design. Good
functional design is indicated by software functionality can be traced
back to customer and end-user requirements. Good internal design is
indicated by software code whose overall structure is clear,
understandable, easily modifiable and maintainable; is robust with
sufficient error handling and status logging capability; and works
correctly when implemented.
Q8. What is software life cycle?
A: Software life cycle
begins when a software product is first conceived and ends when it is
no longer in use. It includes phases like initial concept, requirements
analysis, functional design, internal design, documentation planning,
test planning, coding, document preparation, integration, testing,
maintenance, updates, re-testing and phase-out.
Q9. Why are there so many software bugs?
A: Generally
speaking, there are bugs in software because of unclear requirements,
software complexity, programming errors, changes in requirements,
errors made in bug tracking, time pressure, poorly documented code
and/or bugs in tools used in software development.
1. There are unclear software requirements because there is miscommunication as to what the software should or shouldn't do.
2. Software complexity. All of the followings contribute to the
exponential growth in software and system complexity: Windows
interfaces, client-server and distributed applications, data
communications, enormous relational databases and the sheer size of
applications.
3. Programming errors occur because programmers and software engineers, like everyone else, can make mistakes.
4. As to changing requirements, in some fast-changing business
environments, continuously modified requirements are a fact of life.
Sometimes customers do not understand the effects of changes, or
understand them but request them anyway. And the changes require
redesign of the software, rescheduling of resources and some of the
work already completed have to be redone or discarded and hardware
requirements can be effected, too.
5. Bug tracking can result in errors because the complexity of keeping track of changes can result in errors, too.
6. Time pressures can cause problems, because scheduling of software
projects is not easy and it often requires a lot of guesswork and when
deadlines loom and the crunch comes, mistakes will be made.
7. Code documentation is tough to maintain and it is also tough to
modify code that is poorly documented. The result is bugs. Sometimes
there is no incentive for programmers and software engineers to
document their code and write clearly documented, understandable code.
Sometimes developers get kudos for quickly turning out code, or
programmers and software engineers feel they cannot have job security
if everyone can understand the code they write, or they believe if the
code was hard to write, it should be hard to read.
8. Software development tools , including visual tools, class
libraries, compilers, scripting tools, can introduce their own bugs.
Other times the tools are poorly documented, which can create
additional bugs.
Q10. How do you introduce a new software QA process?
A: It
depends on the size of the organization and the risks involved. For
large organizations with high-risk projects, a serious management
buy-in is required and a formalized QA process is necessary. For medium
size organizations with lower risk projects, management and
organizational buy-in and a slower, step-by-step process is required.
Generally speaking, QA processes should be balanced with productivity,
in order to keep any bureaucracy from getting out of hand. For smaller
groups or projects, an ad-hoc process is more appropriate. A lot
depends on team leads and managers, feedback to developers and good
communication is essential among customers, managers, developers, test
engineers and testers. Regardless the size of the company, the greatest
value for effort is in managing requirement processes, where the goal
is requirements that are clear, complete and testable.
Q11. Give me five common problems that occur during software development.
A: Poorly written requirements, unrealistic schedules, inadequate
testing, adding new features after development is underway and poor
communication.
1. Requirements are poorly written when requirements are unclear,
incomplete, too general, or not testable; therefore there will be
problems.
2. The schedule is unrealistic if too much work is crammed in too little time.
3. Software testing is inadequate if none knows whether or not the
software is any good until customers complain or the system crashes.
4. It's extremely common that new features are added after development is underway.
5. Miscommunication either means the developers don't know what is
needed, or customers have unrealistic expectations and therefore
problems are guaranteed.
Q12. Do automated testing tools make testing easier?
A:
Yes and no. For larger projects, or ongoing long-term projects, they
can be valuable. But for small projects, the time needed to learn and
implement them is usually not worthwhile. A common type of automated
tool is the record/playback type. For example, a test engineer clicks
through all combinations of menu choices, dialog box choices, buttons,
etc. in a GUI and has an automated testing tool record and log the
results. The recording is typically in the form of text, based on a
scripting language that the testing tool can interpret. If a change is
made (e.g. new buttons are added, or some underlying code in the
application is changed), the application is then re-tested by just
playing back the recorded actions and compared to the logged results in
order to check effects of the change. One problem with such tools is
that if there are continual changes to the product being tested, the
recordings have to be changed so often that it becomes a very
time-consuming task to continuously update the scripts. Another problem
with such tools is the interpretation of the results (screens, data,
logs, etc.) that can be a time-consuming task.
Q13. Give me five solutions to problems that occur during software development.
A: Solid requirements, realistic schedules, adequate testing, firm requirements and good communication.
1. Ensure the requirements are solid, clear, complete, detailed,
cohesive, attainable and testable. All players should agree to
requirements. Use prototypes to help nail down requirements.
2. Have schedules that are realistic. Allow adequate time for planning,
design, testing, bug fixing, re-testing, changes and documentation.
Personnel should be able to complete the project without burning out.
3. Do testing that is adequate. Start testing early on, re-test after
fixes or changes, and plan for sufficient time for both testing and bug
fixing.
4. Avoid new features. Stick to initial requirements as much as
possible. Be prepared to defend design against changes and additions,
once development has begun and be prepared to explain consequences. If
changes are necessary, ensure they're adequately reflected in related
schedule changes. Use prototypes early on so customers' expectations
are clarified and customers can see what to expect; this will minimize
changes later on.
5. Communicate. Require walkthroughs and inspections when appropriate;
make extensive use of e-mail, networked bug-tracking tools, tools of
change management. Ensure documentation is available and up-to-date.
Use documentation that is electronic, not paper. Promote teamwork and
cooperation.
Q14. What makes a good test engineer?
A: A good test engineer should have
1. Has a "test to break" attitude,
2. Takes the point of view of the customer,
3. Has a strong desire for quality,
4. Has an attention to detail, He's also
5. Tactful and diplomatic and
6. Has good a communication skill, both oral and written. And he
7. Has previous software development experience, too.
Good test engineers have a "test to break" attitude. We, good test
engineers, take the point of view of the customer, have a strong desire
for quality and an attention to detail. Tact and diplomacy are useful
in maintaining a cooperative relationship with developers and an
ability to communicate with both technical and non-technical people.
Previous software development experience is also helpful as it provides
a deeper understanding of the software development process, gives the
test engineer an appreciation for the developers' point of view and
reduces the learning curve in automated test tool programming.
Q15. What makes a good QA engineer?
A: The same qualities
a good test engineer has are useful for a QA engineer. Additionally,
Rob Davis understands the entire software development process and how
it fits into the business approach and the goals of the organization.
Rob Davis' communication skills and the ability to understand various
sides of issues are important. Good QA engineers understand the entire
software development process and how it fits into the business approach
and the goals of the organization. Communication skills and the ability
to understand various sides of issues are important.
Q16. What makes a good resume?
A: On the subject of
resumes, there seems to be an unending discussion of whether you should
or shouldn't have a one-page resume. The followings are some of the
comments I have personally heard: "Well, Joe Blow (car salesman) said I
should have a one-page resume." "Well, I read a book and it said you
should have a one page resume." "I can't really go into what I really
did because if I did, it'd take more than one page on my resume."
"Gosh, I wish I could put my job at IBM on my resume but if I did it'd
make my resume more than one page, and I was told to never make the
resume more than one page long." "I'm confused, should my resume be
more than one page? I feel like it should, but I don't want to break
the rules." Or, here's another comment, "People just don't read resumes
that are longer than one page." I have heard some more, but we can
start with these. So what's the answer? There is no scientific answer
about whether a one-page resume is right or wrong. It all depends on
who you are and how much experience you have. The first thing to look
at here is the purpose of a resume.
The purpose of a resume is to get you an interview. If the resume
is getting you interviews, then it is considered to be a good resume.
If the resume isn't getting you interviews, then you should change it.
The biggest mistake you can make on your resume is to make it hard to
read. Why? Because, for one, scanners don't like odd resumes. Small
fonts can make your resume harder to read. Some candidates use a
7-point font so they can get the resume onto one page. Big mistake.
Two, resume readers do not like eye strain either. If the resume is
mechanically challenging, they just throw it aside for one that is
easier on the eyes. Three, there are lots of resumes out there these
days, and that is also part of the problem. Four, in light of the
current scanning scenario, more than one page is not a deterrent
because many will scan your resume into their database. Once the resume
is in there and searchable, you have accomplished one of the goals of
resume distribution. Five, resume readers don't like to guess and most
won't call you to clarify what is on your resume.
Generally
speaking, your resume should tell your story. If you're a college
graduate looking for your first job, a one-page resume is just fine. If
you have a longer story, the resume needs to be longer. Please put your
experience on the resume so resume readers can tell when and for whom
you did what. Short resumes -- for people long on experience -- are not
appropriate. The real audience for these short resumes is people with
short attention spans and low IQ. I assure you that when your resume
gets into the right hands, it will be read thoroughly.
Q17. What makes a good QA/Test Manager?
A: QA/Test
Managers are familiar with the software development process; able to
maintain enthusiasm of their team and promote a positive atmosphere;
able to promote teamwork to increase productivity; able to promote
cooperation between Software and Test/QA Engineers, have the people
skills needed to promote improvements in QA processes, have the ability
to withstand pressures and say *no* to other managers when quality is
insufficient or QA processes are not being adhered to; able to
communicate with technical and non-technical people; as well as able to
run meetings and keep them focused.
Q18. What is the role of documentation in QA?
A:
Documentation plays a critical role in QA. QA practices should be
documented, so that they are repeatable. Specifications, designs,
business rules, inspection reports, configurations, code changes, test
plans, test cases, bug reports, user manuals should all be documented.
Ideally, there should be a system for easily finding and obtaining of
documents and determining what document will have a particular piece of
information. Use documentation change management, if possible.
Q19. What about requirements?
A: Requirement
specifications are important and one of the most reliable methods of
insuring problems in a complex software project is to have poorly
documented requirement specifications. Requirements are the details
describing an application's externally perceived functionality and
properties. Requirements should be clear, complete, reasonably
detailed, cohesive, attainable and testable. A non-testable requirement
would be, for example, "user-friendly", which is too subjective. A
testable requirement would be something such as, "the product shall
allow the user to enter their previously-assigned password to access
the application". Care should be taken to involve all of a project's
significant customers in the requirements process. Customers could be
in-house or external and could include end-users, customer acceptance
test engineers, testers, customer contract officers, customer
management, future software maintenance engineers, salespeople and
anyone who could later derail the project. If his/her expectations
aren't met, they should be included as a customer, if possible. In some
organizations, requirements may end up in high-level project plans,
functional specification documents, design documents, or other
documents at various levels of detail. No matter what they are called,
some type of documentation with detailed requirements will be needed by
test engineers in order to properly plan and execute tests. Without
such documentation there will be no clear-cut way to determine if a
software application is performing correctly.
Q20. What is a test plan?
A: A software project test plan
is a document that describes the objectives, scope, approach and focus
of a software testing effort. The process of preparing a test plan is a
useful way to think through the efforts needed to validate the
acceptability of a software product. The completed document will help
people outside the test group understand the why and how of product
validation. It should be thorough enough to be useful, but not so
thorough that none outside the test group will be able to read it.
Q21. What is a test case?
A: A test case is a document
that describes an input, action, or event and its expected result, in
order to determine if a feature of an application is working correctly.
A test case should contain particulars such as a...
1. Test case identifier;
2. Test case name;
3. Objective;
4. Test conditions/setup;
5. Input data requirements/steps, and
6. Expected results.
Please note, the process of developing test cases can help find
problems in the requirements or design of an application, since it
requires you to completely think through the operation of the
application. For this reason, it is useful to prepare test cases early
in the development cycle, if possible.
Q22. What should be done after a bug is found?
A: When a
bug is found, it needs to be communicated and assigned to developers
that can fix it. After the problem is resolved, fixes should be
re-tested. Additionally, determinations should be made regarding
requirements, software, hardware, safety impact, etc., for regression
testing to check the fixes didn't create other problems elsewhere. If a
problem-tracking system is in place, it should encapsulate these
determinations. A variety of commercial, problem-tracking/management
software tools are available. These tools, with the detailed input of
software test engineers, will give the team complete information so
developers can understand the bug, get an idea of its severity,
reproduce it and fix it.
Q23. What is configuration management?
A: Configuration
management (CM) covers the tools and processes used to control,
coordinate and track code, requirements, documentation, problems,
change requests, designs, tools, compilers, libraries, patches, changes
made to them and who makes the changes.
Q24. What if the software is so buggy it can't be tested at all?
A: In this situation the best bet is to have test engineers go through
the process of reporting whatever bugs or problems initially show up,
with the focus being on critical bugs. Since this type of problem can
severely affect schedules and indicates deeper problems in the software
development process, such as insufficient unit testing, insufficient
integration testing, poor design, improper build or release procedures,
managers should be notified and provided with some documentation as
evidence of the problem.
Q25. How do you know when to stop testing?
A: This can be
difficult to determine. Many modern software applications are so
complex and run in such an interdependent environment, that complete
testing can never be done. Common factors in deciding when to stop
are... 1. Deadlines, e.g. release deadlines, testing deadlines;
2. Test cases completed with certain percentage passed;
3. Test budget has been depleted;
4. Coverage of code, functionality, or requirements reaches a specified point;
5. Bug rate falls below a certain level; or
6. Beta or alpha testing period ends.
Q26. What if there isn't enough time for thorough testing?
A: Since it's rarely possible to test every possible aspect of an
application, every possible combination of events, every dependency, or
everything that could go wrong, risk analysis is appropriate to most
software development projects. Use risk analysis to determine where
testing should be focused. This requires judgment skills, common sense
and experience. The checklist should include answers to the following
questions:
1. Which functionality is most important to the project's intended purpose?
2. Which functionality is most visible to the user?
3. Which functionality has the largest safety impact?
4. Which functionality has the largest financial impact on users?
5. Which aspects of the application are most important to the customer?
6. Which aspects of the application can be tested early in the development cycle?
7. Which parts of the code are most complex and thus most subject to errors?
8. Which parts of the application were developed in rush or panic mode?
9. Which aspects of similar/related previous projects caused problems?
10. Which aspects of similar/related previous projects had large maintenance expenses?
11. Which parts of the requirements and design are unclear or poorly thought out?
12. What do the developers think are the highest-risk aspects of the application?
13. What kinds of problems would cause the worst publicity?
14. What kinds of problems would cause the most customer service complaints?
15. What kinds of tests could easily cover multiple functionalities?
16. Which tests will have the best high-risk-coverage to time-required ratio?
Q27. What if the project isn't big enough to justify extensive testing?
A: Consider the impact of project errors, not the size of the project.
However, if extensive testing is still not justified, risk analysis is
again needed and the considerations listed under "What if there isn't
enough time for thorough testing?" do apply. The test engineer then
should do "ad hoc" testing, or write up a limited test plan based on
the risk analysis.
Q28. What can be done if requirements are changing continuously?
A: Work with management early on to understand how requirements might
change, so that alternate test plans and strategies can be worked out
in advance. It is helpful if the application's initial design allows
for some adaptability, so that later changes do not require redoing the
application from scratch. Additionally, try to...
1. Ensure the code is well commented and well documented; this makes changes easier for the developers.
2. Use rapid prototyping whenever possible; this will help customers feel sure of their requirements and minimize changes.
3. In the project's initial schedule, allow for some extra time to commensurate with probable changes.
4. Move new requirements to a 'Phase 2' version of an application and use the original requirements for the 'Phase 1' version.
5. Negotiate to allow only easily implemented new requirements into the
project; move more difficult, new requirements into future versions of
the application.
6. Ensure customers and management understand scheduling impacts,
inherent risks and costs of significant requirements changes. Then let
management or the customers decide if the changes are warranted; after
all, that's their job.
7. Balance the effort put into setting up automated testing with the
expected effort required to redo them to deal with changes.
8. Design some flexibility into automated test scripts;
9. Focus initial automated testing on application aspects that are most likely to remain unchanged;
10. Devote appropriate effort to risk analysis of changes, in order to minimize regression-testing needs;
11. Design some flexibility into test cases; this is not easily done;
the best bet is to minimize the detail in the test cases, or set up
only higher-level generic-type test plans;
12. Focus less on detailed test plans and test cases and more on ad-hoc
testing with an understanding of the added risk this entails.
Q29. What if the application has functionality that wasn't in the requirements?
A: It may take serious effort to determine if an application has
significant unexpected or hidden functionality, which it would indicate
deeper problems in the software development process. If the
functionality isn't necessary to the purpose of the application, it
should be removed, as it may have unknown impacts or dependencies that
were not taken into account by the designer or the customer.
If not removed, design information will be needed to determine added
testing needs or regression testing needs. Management should be made
aware of any significant added risks as a result of the unexpected
functionality. If the functionality only affects areas, such as minor
improvements in the user interface, it may not be a significant risk.
Q30. How can software QA processes be implemented without stifling productivity?
A: Implement QA processes slowly over time. Use consensus to reach
agreement on processes and adjust and experiment as an organization
grows and matures. Productivity will be improved instead of stifled.
Problem prevention will lessen the need for problem detection. Panics
and burnout will decrease and there will be improved focus and less
wasted effort. At the same time, attempts should be made to keep
processes simple and efficient, minimize paperwork, promote
computer-based processes and automated tracking and reporting, minimize
time required in meetings and promote training as part of the QA
process. However, no one, especially talented technical types, like
bureaucracy and in the short run things may slow down a bit. A typical
scenario would be that more days of planning and development will be
needed, but less time will be required for late-night bug fixing and
calming of irate customers.
Q31. What if organization is growing so fast that fixed QA processes are impossible?
A: This is a common problem in the software industry, especially in new
technology areas. There is no easy solution in this situation, other
than...
1. Hire good people (i.e. hire Rob Davis)
2. Ruthlessly prioritize quality issues and maintain focus on the customer;
Everyone in the organization should be clear on what quality means to the customer.
Q32. How is testing affected by object-oriented designs?
A: A well-engineered object-oriented design can make it easier to trace
from code to internal design to functional design to requirements.
While there will be little affect on black box testing (where an
understanding of the internal design of the application is
unnecessary), white-box testing can be oriented to the application's
objects. If the application was well designed this can simplify test
design.
Q33. Why do you recommended that we test during the design phase?
A: Because testing during the design phase can prevent defects later on. We recommend verifying three things...
1. Verify the design is good, efficient, compact, testable and maintainable.
2. Verify the design meets the requirements and is complete (specifies
all relationships between modules, how to pass data, what happens in
exceptional circumstances, starting state of each module and how to
guarantee the state of each module).
3. Verify the design incorporates enough memory, I/O devices and quick enough runtime for the final product.
Q34. What is software quality assurance?
A: Software
Quality Assurance, when Rob Davis does it, is oriented to *prevention*.
It involves the entire software development process. Prevention is
monitoring and improving the process, making sure any agreed-upon
standards and procedures are followed and ensuring problems are found
and dealt with. Software Testing, when performed by Rob Davis, is also
oriented to *detection*. Testing involves the operation of a system or
application under controlled conditions and evaluating the results.
Organizations vary considerably in how they assign responsibility for
QA and testing. Sometimes they're the combined responsibility of one
group or individual. Also common are project teams, which include a mix
of test engineers, testers and developers who work closely together,
with overall QA processes monitored by project managers. It depends on
what best fits your organization's size and business structure. Rob
Davis can provide QA and/or Software QA. This document details some
aspects of how he can provide software testing/QA service. For more
information, e-mail [email protected]
Q35. What is quality assurance?
A: Quality Assurance
ensures all parties concerned with the project adhere to the process
and procedures, standards and templates and test readiness reviews.
Rob Davis' QA service depends on the customers and projects. A lot will
depend on team leads or managers, feedback to developers and
communications among customers, managers, developers' test engineers
and testers.
Q36. Process and procedures - why follow them?
A: Detailed
and well-written processes and procedures ensure the correct steps are
being executed to facilitate a successful completion of a task. They
also ensure a process is repeatable. Once Rob Davis has learned and
reviewed customer's business processes and procedures, he will follow
them. He will also recommend improvements and/or additions.
Q37. Standards and templates - what is supposed to be in a document?
A: All documents should be written to a certain standard and template.
Standards and templates maintain document uniformity. It also helps in
learning where information is located, making it easier for a user to
find what they want. Lastly, with standards and templates, information
will not be accidentally omitted from a document. Once Rob Davis has
learned and reviewed your standards and templates, he will use them. He
will also recommend improvements and/or additions.
Q38. What are the different levels of testing?
A: Rob Davis has expertise in testing at all testing levels listed
below. At each test level, he documents the results. Each level of
testing is either considered black or white box testing.
Q39. What is black box testing?
A: Black box testing is
functional testing, not based on any knowledge of internal software
design or code. Black box testing are based on requirements and
functionality.
Q40. What is white box testing?
A: White box testing is
based on knowledge of the internal logic of an application's code.
Tests are based on coverage of code statements, branches, paths and
conditions.
Q41. What is unit testing?
A: Unit testing is the first
level of dynamic testing and is first the responsibility of developers
and then that of the test engineers. Unit testing is performed after
the expected test results are met or differences are
explainable/acceptable.
Q42. What is parallel/audit testing?
A: Parallel/audit
testing is testing where the user reconciles the output of the new
system to the output of the current system to verify the new system
performs the operations correctly.
Q43. What is functional testing?
A: Functional testing is
black-box type of testing geared to functional requirements of an
application. Test engineers *should* perform functional testing.
Q44. What is usability testing?
A: Usability testing is
testing for 'user-friendliness'. Clearly this is subjective and depends
on the targeted end-user or customer. User interviews, surveys, video
recording of user sessions and other techniques can be used.
Programmers and developers are usually not appropriate as usability
testers.
Q45. What is incremental integration testing?
A:
Incremental integration testing is continuous testing of an application
as new functionality is recommended. This may require that various
aspects of an application's functionality are independent enough to
work separately, before all parts of the program are completed, or that
test drivers are developed as needed. This type of testing may be
performed by programmers, software engineers, or test engineers.
Q46. What is integration testing?
A: Upon completion of
unit testing, integration testing begins. Integration testing is black
box testing. The purpose of integration testing is to ensure distinct
components of the application still work in accordance to customer
requirements. Test cases are developed with the express purpose of
exercising the interfaces between the components. This activity is
carried out by the test team.
Integration testing is considered complete, when actual results and
expected results are either in line or differences are
explainable/acceptable based on client input.
Q47. What is system testing?
A: System testing is black box testing, performed by the Test Team, and
at the start of the system testing the complete system is configured in
a controlled environment. The purpose of system testing is to validate
an application's accuracy and completeness in performing the functions
as designed. System testing simulates real life scenarios that occur in
a "simulated real life" test environment and test all functions of the
system that are required in real life. System testing is deemed
complete when actual results and expected results are either in line or
differences are explainable or acceptable, based on client input. Upon
completion of integration testing, system testing is started. Before
system testing, all unit and integration test results are reviewed by
Software QA to ensure all problems have been resolved. For a higher
level of testing it is important to understand unresolved problems that
originate at unit and integration test levels.
Q48. What is end-to-end testing?
A: Similar to system
testing, the *macro* end of the test scale is testing a complete
application in a situation that mimics real world use, such as
interacting with a database, using network communication, or
interacting with other hardware, application, or system.
Q49. What is regression testing?
A: The objective of
regression testing is to ensure the software remains intact. A baseline
set of data and scripts is maintained and executed to verify changes
introduced during the release have not "undone" any previous code.
Expected results from the baseline are compared to results of the
software under test. All discrepancies are highlighted and accounted
for, before testing proceeds to the next level.
Q50. What is sanity testing?
A: Sanity testing is
performed whenever cursory testing is sufficient to prove the
application is functioning according to specifications. This level of
testing is a subset of regression testing. It normally includes a set
of core tests of basic GUI functionality to demonstrate connectivity to
the database, application servers, printers, etc.
Q51. What is performance testing?
A: Although performance
testing is described as a part of system testing, it can be regarded as
a distinct level of testing. Performance testing verifies loads,
volumes and response times, as defined by requirements.
Q52. What is load testing?
A: Load testing is testing an
application under heavy loads, such as the testing of a web site under
a range of loads to determine at what point the system response time
will degrade or fail.
Q53. What is installation testing?
A: Installation testing
is testing full, partial, upgrade, or install/uninstall processes. The
installation test for a release is conducted with the objective of
demonstrating production readiness. This test includes the inventory of
configuration items, performed by the application's System
Administration, the evaluation of data readiness, and dynamic tests
focused on basic system functionality. When necessary, a sanity test is
performed, following installation testing.
Q54. What is security/penetration testing?
A:
Security/penetration testing is testing how well the system is
protected against unauthorized internal or external access, or willful
damage. This type of testing usually requires sophisticated testing
techniques.
Q55. What is recovery/error testing?
A: Recovery/error
testing is testing how well a system recovers from crashes, hardware
failures, or other catastrophic problems.
Q56. What is compatibility testing?
A: Compatibility
testing is testing how well software performs in a particular hardware,
software, operating system, or network environment.
Q57. What is comparison testing?
A: Comparison testing is testing that compares software weaknesses and strengths to those of competitors' products.
Q58. What is acceptance testing?
A: Acceptance testing is
black box testing that gives the client/customer/project manager the
opportunity to verify the system functionality and usability prior to
the system being released to production. The acceptance test is the
responsibility of the client/customer or project manager, however, it
is conducted with the full support of the project team. The test team
also works with the client/customer/project manager to develop the
acceptance criteria.
Q59. What is alpha testing?
A: Alpha testing is testing of
an application when development is nearing completion. Minor design
changes can still be made as a result of alpha testing. Alpha testing
is typically performed by a group that is independent of the design
team, but still within the company, e.g. in-house software test
engineers, or software QA engineers.
Q60. What is beta testing?
A: Beta testing is testing an
application when development and testing are essentially completed and
final bugs and problems need to be found before the final release. Beta
testing is typically performed by end-users or others, not programmers,
software engineers, or test engineers.
Q61. What testing roles are standard on most testing projects?
A: Depending on the organization, the following roles are more or less
standard on most testing projects: Testers, Test Engineers, Test/QA
Team Lead, Test/QA Manager, System Administrator, Database
Administrator, Technical Analyst, Test Build Manager and Test
Configuration Manager. Depending on the project, one person may wear
more than one hat. For instance, Test Engineers may also wear the hat
of Technical Analyst, Test Build Manager and Test Configuration
Manager. You CAN get a job in testing. Click on a link!
Q62. What is a Test/QA Team Lead?
A: The Test/QA Team Lead
coordinates the testing activity, communicates testing status to
management and manages the test team.
Q63. What is a Test Engineer?
A: Test Engineers are
engineers who specialize in testing. We, test engineers, create test
cases, procedures, scripts and generate data. We execute test
procedures and scripts, analyze standards of measurements, evaluate
results of system/integration/regression testing. We also...
1. Speed up the work of the development staff;
2. Reduce your organization's risk of legal liability;
3. Give you the evidence that your software is correct and operates properly;
4. Improve problem tracking and reporting;
5. Maximize the value of your software;
6. Maximize the value of the devices that use it;
7. Assure the successful launch of your product by discovering bugs and
design flaws, before users get discouraged, before shareholders loose
their cool and before employees get bogged down;
8. Help the work of your development staff, so the development team can devote its time to build up your product;
9. Promote continual improvement;
10. Provide documentation required by FDA, FAA, other regulatory agencies and your customers;
11. Save money by discovering defects 'early' in the design process, before failures occur in production, or in the field;
12. Save the reputation of your company by discovering bugs and design
flaws; before bugs and design flaws damage the reputation of your
company.
Q64. What is a Test Build Manager?
A: Test Build Managers
deliver current software versions to the test environment, install the
application's software and apply software patches, to both the
application and the operating system, set-up, maintain and back up test
environment hardware. Depending on the project, one person may wear
more than one hat. For instance, a Test Engineer may also wear the hat
of a Test Build Manager.
Q65. What is a System Administrator?
A: Test Build
Managers, System Administrators, Database Administrators deliver
current software versions to the test environment, install the
application's software and apply software patches, to both the
application and the operating system, set-up, maintain and back up test
environment hardware. Depending on the project, one person may wear
more than one hat. For instance, a Test Engineer may also wear the hat
of a System Administrator.
Q66. What is a Database Administrator?
A: Test Build
Managers, System Administrators and Database Administrators deliver
current software versions to the test environment, install the
application's software and apply software patches, to both the
application and the operating system, set-up, maintain and back up test
environment hardware. Depending on the project, one person may wear
more than one hat. For instance, a Test Engineer may also wear the hat
of a Database Administrator.
Q67. What is a Technical Analyst?
A: Technical Analysts
perform test assessments and validate system/functional test
requirements. Depending on the project, one person may wear more than
one hat. For instance, Test Engineers may also wear the hat of a
Technical Analyst.
Q68. What is a Test Configuration Manager?
A: Test
Configuration Managers maintain test environments, scripts, software
and test data. Depending on the project, one person may wear more than
one hat. For instance, Test Engineers may also wear the hat of a Test
Configuration Manager.
Q69. What is a test schedule?
A: The test schedule is a
schedule that identifies all tasks required for a successful testing
effort, a schedule of all test activities and resource requirements.
Q70. What is software testing methodology?
A: One software testing methodology is the use a three step process of...
1. Creating a test strategy;
2. Creating a test plan/design; and
3. Executing tests.
This methodology can be used and molded to your organization's needs.
Rob Davis believes that using this methodology is important in the
development and in ongoing maintenance of his customers' applications.
Q71. What is the general testing process?
A: The general
testing process is the creation of a test strategy (which sometimes
includes the creation of test cases), creation of a test plan/design
(which usually includes test cases and test procedures) and the
execution of tests.
Q72. How do you create a test strategy?
A: The test
strategy is a formal description of how a software product will be
tested. A test strategy is developed for all levels of testing, as
required. The test team analyzes the requirements, writes the test
strategy and reviews the plan with the project team. The test plan may
include test cases, conditions, the test environment, a list of related
tasks, pass/fail criteria and risk assessment.
Inputs for this process:
1. A description of the required hardware and software components,
including test tools. This information comes from the test environment,
including test tool data.
2. A description of roles and responsibilities of the r resources
required for the test and schedule constraints. This information comes
from man-hours and schedules.
3. Testing methodology. This is based on known standards.
4. Functional and technical requirements of the application. This
information comes from requirements, change request, technical and
functional design documents.
5. Requirements that the system can not provide, e.g. system limitations, Outputs for this process:
6. An approved and signed off test strategy document, test plan, including test cases.
7. Testing issues requiring resolution. Usually this requires additional negotiation at the project management level.
Q73. How do you create a test plan/design?
A: Test
scenarios and/or cases are prepared by reviewing functional
requirements of the release and preparing logical groups of functions
that can be further broken into test procedures. Test procedures define
test conditions, data to be used for testing and expected results,
including database updates, file outputs, report results. Generally
speaking...
1. Test cases and scenarios are designed to represent both typical and unusual situations that may occur in the application.
2. Test engineers define unit test requirements and unit test cases. Test engineers also execute unit test cases.
3. It is the test team that, with assistance of developers and clients,
develops test cases and scenarios for integration and system testing.
4. Test scenarios are executed through the use of test procedures or scripts.
5. Test procedures or scripts define a series of steps necessary to perform one or more test scenarios.
6. Test procedures or scripts include the specific data that will be used for testing the process or transaction.
7. Test procedures or scripts may cover multiple test scenarios.
8. Test scripts are mapped back to the requirements and traceability matrices are used to ensure each test is within scope.
9. Test data is captured and base lined, prior to testing. This data
serves as the foundation for unit and system testing and used to
exercise system functionality in a controlled environment.
10. Some output data is also base-lined for future comparison.
Base-lined data is used to support future application maintenance via
regression testing.
11. A pretest meeting is held to assess the readiness of the
application and the environment and data to be tested. A test readiness
document is created to indicate the status of the entrance criteria of
the release.
Inputs for this process:
12. Approved Test Strategy Document.
14. Test tools, or automated test tools, if applicable.
15. Previously developed scripts, if applicable.
16. Test documentation problems uncovered as a result of testing.
17. A good understanding of software complexity and module path
coverage, derived from general and detailed design documents, e.g.
software design document, source code and software complexity data.
Outputs for this process:
18. Approved documents of test scenarios, test cases, test conditions and test data.
19.� Reports of software design issues, given to software developers for correction.
Q74. How do you execute tests?
A: Execution of tests is
completed by following the test documents in a methodical manner. As
each test procedure is performed, an entry is recorded in a test
execution log to note the execution of the procedure and whether or not
the test procedure uncovered any defects. Checkpoint meetings are held
throughout the execution phase. Checkpoint meetings are held daily, if
required, to address and discuss testing issues, status and activities.
1. The output from theexecution of test procedures is known as test
results. Test results are evaluated by test engineers to determine
whether the expected results have been obtained. All
discrepancies/anomalies are logged and discussed with the software team
lead, hardware test lead, programmers, software engineers and
documented for further investigation and resolution. Every company has
a different process for logging and reporting bugs/defects uncovered
during testing.
2. A pass/fail criteria is used to determine the severity of a problem,
and results are recorded in a test summary report. The severity of a
problem, found during system testing, is defined in accordance to the
customer's risk assessment and recorded in their selected tracking
tool.
3. Proposed fixes are delivered to the testing environment, based on
the severity of the problem. Fixes are regression tested and flawless
fixes are migrated to a new baseline. Following completion of the test,
members of the test team prepare a summary report. The summary report
is reviewed by the Project Manager, Software QA Manager and/or Test
Team Lead.
4. After a particular level of testing has been certified, it is the
responsibility of the Configuration Manager to coordinate the migration
of the release software components to the next test level, as
documented in the Configuration Management Plan. The software is only
migrated to the production environment after the Project Manager's
formal acceptance.
5. The test team reviews test document problems identified during testing, and update documents where appropriate.
Inputs for this process:
6. Approved test documents, e.g. Test Plan, Test Cases, Test Procedures.
7. Test tools, including automated test tools, if applicable.
8. Developed scripts.
9. Changes to the design, i.e. Change Request Documents.
10. Test data.
11. Availability of the test team and project team.
12. General and Detailed Design Documents, i.e. Requirements Document, Software Design Document.
13. A software that has been migrated to the test environment, i.e. unit tested code, via the Configuration/Build Manager.
14. Test Readiness Document.
15. Document Updates.
Outputs for this process:
16. Log and summary of the test results. Usually this is part of the
Test Report. This needs to be approved and signed-off with revised
testing deliverables.
17. Changes to the code, also known as test fixes. Test document
problems uncovered as a result of testing. Examples are Requirements
document and Design Document problems.
18. Reports on software design issues, given to software developers for correction. Examples are bug reports on code issues.
19. Formal record of test incidents, usually part of problem tracking.
Base-lined package, also known as tested source and object code, ready for migration to the next level.
Q75. What testing approaches can you tell me about?
A: Each of the followings represents a different testing approach:
1. Black box testing,
2. White box testing,
3. Unit testing,
4. Incremental testing,
5. Integration testing,
6. Functional testing,
7. System testing,
8. End-to-end testing,
9. Sanity testing,
10. Regression testing,
11. Acceptance testing,
12. Load testing,
13. Performance testing,
14. Usability testing,
15. Install/uninstall testing,
16. Recovery testing,
17. Security testing,
18. Compatibility testing,
19. Exploratory testing, ad-hoc testing,
20. User acceptance testing,
21. Comparison testing,
22. Alpha testing,
23. Beta testing, and
24. Mutation testing.
Q76. What is stress testing?
A: Stress testing is testing that investigates the behavior of software
(and hardware) under extraordinary operating conditions. For example,
when a web server is stress tested, testing aims to find out how many
users can be on-line, at the same time, without crashing the server.
Stress testing tests the stability of a given system or entity. It
tests something beyond its normal operational capacity, in order to
observe any negative results. For example, a web server is stress
tested, using scripts, bots, and various denial of service tools.
Q77. What is load testing?
A: Load testing simulates the
expected usage of a software program, by simulating multiple users that
access the program's services concurrently. Load testing is most useful
and most relevant for multi-user systems, client/server models,
including web servers. For example, the load placed on the system is
increased above normal usage patterns, in order to test the system's
response at peak loads. You CAN learn load testing, with little or no
outside help. Get CAN get free information. Click on a link!
Q79. What is the difference between performance testing and load testing?
A: Load testing is a blanket term that is used in many different ways
across the professional software testing community. The term, load
testing, is often used synonymously with stress testing, performance
testing, reliability testing, and volume testing. Load testing
generally stops short of stress testing. During stress testing, the
load is so great that errors are the expected results, though there is
gray area in between stress testing and load testing. You CAN learn
testing, with little or no outside help. Get CAN get free information.
Click on a link!
Q80. What is the difference between reliability testing and load testing?
A: Load testing is a blanket term that is used in many different ways
across the professional software testing community. The term, load
testing, is often used synonymously with stress testing, performance
testing, reliability testing, and volume testing. Load testing
generally stops short of stress testing. During stress testing, the
load is so great that errors are the expected results, though there is
gray area in between stress testing and load testing.
Q81. What is the difference between volume testing and load testing?
A: Load testing is a blanket term that is used in many different ways
across the professional software testing community. The term, load
testing, is often used synonymously with stress testing, performance
testing, reliability testing, and volume testing. Load testing
generally stops short of stress testing. During stress testing, the
load is so great that errors are the expected results, though there is
gray area in between stress testing and load testing.
Q82. What is incremental testing?
A: Incremental testing
is partial testing of an incomplete product. The goal of incremental
testing is to provide an early feedback to software developers.
Q83. What is software testing?
A: Software testing is a process that identifies the correctness,
completenes, and quality of software. Actually, testing cannot
establish the correctness of software. It can find defects, but cannot
prove there are no defects. You CAN learn software testing, with little
or no outside help. Get CAN get free information. Click on a link!
Q84. What is automated testing?
A: Automated testing is a formally specified and controlled method of formal testing approach.
Q85. What is alpha testing?
A: Alpha testing is final
testing before the software is released to the general public. First,
(and this is called the first phase of alpha testing), the software is
tested by in-house developers. They use either debugger software, or
hardware-assisted debuggers. The goal is to catch bugs quickly. Then,
(and this is called second stage of alpha testing), the software is
handed over to us, the software QA staff, for additional testing in an
environment that is similar to the intended use.
Q86. What is beta testing?
A: Following alpha testing,
"beta versions" of the software are released to a group of people, and
limited public tests are performed, so that further testing can ensure
the product has few bugs. Other times, beta versions are made available
to the general public, in order to receive as much feedback as
possible. The goal is to benefit the maximum number of future users.
Q87. What is the difference between alpha and beta testing?
A: Alpha testing is performed by in-house developers and software QA
personnel. Beta testing is performed by the public, a few select
prospective customers, or the general public.
Q88. What is clear box testing?
A: Clear box testing is
the same as white box testing. It is a testing approach that examines
the application's program structure, and derives test cases from the
application's program logic. You CAN learn clear box testing, with
little or no outside help. Get CAN get free information. Click on a
link!
Q89. What is boundary value analysis?
A: Boundary value
analysis is a technique for test data selection. A test engineer
chooses values that lie along data extremes. Boundary values include
maximum, minimum, just inside boundaries, just outside boundaries,
typical values, and error values. The expectation is that, if a systems
works correctly for these extreme or special values, then it will work
correctly for all values in between. An effective way to test code, is
to exercise it at its natural boundaries.
Q90. What is ad hoc testing?
A: Ad hoc testing is a testing approach; it is the least formal testing approach.
Q91. What is gamma testing?
A: Gamma testing is testing of
software that has all the required features, but it did not go through
all the in-house quality checks. Cynics tend to refer to software
releases as "gamma testing".
Q92. What is glass box testing?
A: Glass box testing is
the same as white box testing. It is a testing approach that examines
the application's program structure, and derives test cases from the
application's program logic.
Q93. What is open box testing?
A: Open box testing is same
as white box testing. It is a testing approach that examines the
application's program structure, and derives test cases from the
application's program logic.
Q94. What is black box testing?
A: Black box testing a
type of testing that considers only externally visible behavior. Black
box testing considers neither the code itself, nor the "inner workings"
of the software. You CAN learn to do black box testing, with little or
no outside help. Get CAN get free information. Click on a link!
Q95. What is functional testing?
A: Functional testing is
same as black box testing. Black box testing a type of testing that
considers only externally visible behavior. Black box testing considers
neither the code itself, nor the "inner workings" of the software.
Q96. What is closed box testing?
A: Closed box testing is
same as black box testing. Black box testing a type of testing that
considers only externally visible behavior. Black box testing considers
neither the code itself, nor the "inner workings" of the software.
Q97. What is bottom-up testing?
A: Bottom-up testing is a
technique for integration testing. A test engineer creates and uses
test drivers for components that have not yet been developed, because,
with bottom-up testing, low-level components are tested first. The
objective of bottom-up testing is to call low-level components first,
for testing
purposes.
Q98. What is software quality?
A: The quality of the
software does vary widely from system to system. Some common quality
attributes are stability, usability, reliability, portability, and
maintainability. See quality standard ISO 9126 for more information on
this subject.
Q99. How do test case templates look like?
A: Software
test cases are in a document that describes inputs, actions, or events,
and their expected results, in order to determine if all features of an
application are working correctly. Test case templates contain all
particulars of every test case. Often these templates are in the form
of a table. One example of this table is a 6-column table, where column
1 is the "Test Case ID Number", column 2 is the "Test Case Name",
column 3 is the "Test Objective", column 4 is the "Test
Conditions/Setup", column 5 is the "Input Data Requirements/Steps", and
column 6 is the "Expected Results". All documents should be written to
a certain standard and template. Standards and templates maintain
document uniformity. They also help in learning where information is
located, making it easier for users to find what they want. Lastly,
with standards and templates, information will not be accidentally
omitted from a document. You CAN learn to create test case templates,
with little or no outside help. Get CAN get free information.
Click on a link!
Q100. What is a software fault?
A: Software faults are
hidden programming errors. Software faults are errors in the
correctness of the semantics of computer programs.
Q101. What is software failure?
A: Software failure occurs when the software does not do what the user expects to see.
Q102. What is the difference between a software fault and a software failure?
A: Software failure occurs when the software does not do what the user
expects to see. A software fault, on the other hand, is a hidden
programming error. A software fault becomes a software failure only
when the exact computation conditions are met, and the faulty portion
of the code is executed on the CPU. This can occur during normal usage.
Or, when the software is ported to a different hardware platform. Or,
when the software is ported to a different complier. Or, when the
software gets extended.
Q103. What is a test engineer?
A: Test engineers are
engineers who specialize in testing. We, test engineers, create test
cases, procedures, scripts and generate data. We execute test
procedures and scripts, analyze standards of measurements, evaluate
results of system/integration/regression testing.
Q104. What is the role of test engineers?
A: Test
engineers speed up the work of the development staff, and reduce the
risk of your company's legal liability. We, test engineers, also give
the company the evidence that the software is correct and operates
properly. We also improve problem tracking and reporting, maximize the
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Replies:
Posted By: kavikid
Date Posted: 19Nov2007 at 10:28pm
hello, tanushree...i have just started the course of software testing and i dont knw how i can start and initially wat i have to do..... and where i have to go for reference materials........
thanks and regards
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The road to success is always under construction......
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