Fundamental test process

Август 8, 2022

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Fundamental test process

Содержание

2. European Headquarters – Lviv, Ukraine Agenda What is testing Why is testing necessary Main testing principles
3. What is testing Why testing is necessary
4. What is Testing? When we are testing something we are checking whether it is OK
5. European Headquarters – Lviv, Ukraine Why testing is necessary People make mistakes
6. European Headquarters – Lviv, Ukraine Why testing is necessary We should assume our work contains mistakes
7. European Headquarters – Lviv, Ukraine Why testing is necessary Software is part of our life
8. European Headquarters – Lviv, Ukraine Why testing is necessary Some of the problems might be trivial,
9. European Headquarters – Lviv, Ukraine Why testing is necessary Not all software systems carry the same
10. European Headquarters – Lviv, Ukraine Causes of software defects Human action that produces incorrect result A
11. European Headquarters – Lviv, Ukraine Cost of defect The cost of finding and fixing defects rises
12. European Headquarters – Lviv, Ukraine Testing and Quality Testing helps us to measure the quality of
13. European Headquarters – Lviv, Ukraine Software Quality – ISTQB definition Quality: the degree to which a
14. European Headquarters – Lviv, Ukraine Software Testing - ISTQB definition Testing is the process consisting of:
15. European Headquarters – Lviv, Ukraine Quality assurance- ISTQB definition Quality assurance: Part of quality management focused
16. European Headquarters – Lviv, Ukraine Quality Assurance/ Quality Control
17. Testing Principles
18. European Headquarters – Lviv, Ukraine Principle 1 If no defects are found, it is not a
19. European Headquarters – Lviv, Ukraine Principle 2 Exhaustive testing is impossible Instead of exhaustive testing, use
20. European Headquarters – Lviv, Ukraine Principle 3 Early testing Find defects early on when they are
21. European Headquarters – Lviv, Ukraine Principle 4 Defect clustering Review defects and failures in order to
22. European Headquarters – Lviv, Ukraine Principle 5 Pesticide paradox Updated or NEW test cases potentially find
23. European Headquarters – Lviv, Ukraine Principle 6 Testing is context dependent The higher the possibility of
24. European Headquarters – Lviv, Ukraine Principle 7 Absence of errors fallacy The fact that no defects
25. Fundamental Test Process
26. Fundamental Test Process Test planning and control Test analysis and design Test implementation and execution Evaluating
27. Fundamental Test Process
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Слайд 2

European Headquarters – Lviv, Ukraine
Agenda
What is testing
Why is testing necessary
Main testing

principles
Key phases of Fundamental Test Process according to ISTQB standard

Слайд 3

What is testing Why testing is necessary

Слайд 4

What is Testing?
When we are testing something we are checking whether

it is OK

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European Headquarters – Lviv, Ukraine
Why testing is necessary
People make mistakes

Слайд 6

European Headquarters – Lviv, Ukraine
Why testing is necessary
We should assume our

work contains mistakes

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European Headquarters – Lviv, Ukraine
Why testing is necessary
Software is part of

our life

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European Headquarters – Lviv, Ukraine
Why testing is necessary
Some of the problems

might be trivial, but others can be costly and damaging - with loss of money, time or business reputation - and even may result in injury or death

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European Headquarters – Lviv, Ukraine
Why testing is necessary
Not all software systems

carry the same level of risk and not all problems have the same impact when they occur

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European Headquarters – Lviv, Ukraine
Causes of software defects
Human action that produces

incorrect result

A flaw in a component or system that can cause the component or system to fail to perform its required function

Deviation from expected result

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European Headquarters – Lviv, Ukraine
Cost of defect
The cost of finding and

fixing defects rises considerably across the life cycle

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European Headquarters – Lviv, Ukraine
Testing and Quality
Testing helps us to measure

the quality of software in terms of:
the number of defects found,
the tests run,
and the system covered by the tests.

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European Headquarters – Lviv, Ukraine
Software Quality – ISTQB definition
Quality: the degree

to which a system, component, or process meets: - specified requirements
- customer or user needs or expectations

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European Headquarters – Lviv, Ukraine
Software Testing - ISTQB definition
Testing is the

process consisting of:
all lifecycle activities,
both static and dynamic,
concerned with planning, preparation and evaluation of software products and related work products
to determine that software products satisfies specified requirements,
to demonstrate that they are fit for purpose,
and to detect defects.

Description of testing as a process

Objectives of the test process

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European Headquarters – Lviv, Ukraine
Quality assurance- ISTQB definition
Quality assurance: Part of

quality management focused on providing confidence that quality requirements will be fulfilled

Quality Management

Quality Control

Quality Assurance

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European Headquarters – Lviv, Ukraine
Quality Assurance/ Quality Control

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Testing Principles

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European Headquarters – Lviv, Ukraine
Principle 1
If no defects are found, it

is not a proof of correctness

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European Headquarters – Lviv, Ukraine
Principle 2
Exhaustive testing is impossible
Instead of exhaustive

testing, use risks and priorities to focus testing efforts

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European Headquarters – Lviv, Ukraine
Principle 3
Early testing
Find defects early on when

they are cheap to find and fix

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European Headquarters – Lviv, Ukraine
Principle 4
Defect clustering
Review defects and failures

in order to improve processes

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European Headquarters – Lviv, Ukraine
Principle 5
Pesticide paradox
Updated or NEW test

cases potentially find more defects

Test cases need to be regularly revised, new and different tests need to be written

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European Headquarters – Lviv, Ukraine
Principle 6
Testing is context dependent
The higher the

possibility of losses, the more we need to invest in testing

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European Headquarters – Lviv, Ukraine
Principle 7
Absence of errors fallacy
The fact that

no defects are outstanding is not a good reason to ship the software

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