This document discusses the fundamentals of software testing. It explains that testing is needed to find defects or bugs in software that can cause problems ranging from minor issues to costly failures or safety hazards. Testing helps ensure quality by identifying these defects and promoting confidence that the software works as specified. The document outlines different types of defects that can occur at various stages of the software development lifecycle from errors in requirements and design to issues that arise from environmental factors or intentional damage. It emphasizes that testing plays an important role in software development, maintenance, and operations by measuring quality and verifying that the system meets its intended functionality and performance requirements.
In this chapter,i was introduce you to the fundamentals of testing:why testing is needed;its limitations,objectives and purpose;the principles behind testing; the process that testers follow; and some ofthe psychological factors that testers must consider in their work. By reading this chapter you'll gain an understanding of the fundamentals of testing and be able to describe those fundamentals
In this chapter,i was introduce you to the fundamentals of testing:why testing is needed;its limitations,objectives and purpose;the principles behind testing; the process that testers follow; and some ofthe psychological factors that testers must consider in their work. By reading this chapter you'll gain an understanding of the fundamentals of testing and be able to describe those fundamentals
Fundamentals of testing - Testing & Implementationsyogi syafrialdi
As we go through this section, watch for the Syllabus terms bug, defect, error, failure, fault, mistake, quality, risk, software, testing and exhaustive testing. You'll find these terms defined in the glossary.
Software testing is entirely about finding defects in applications, right? Apparently, this can be considered as the principal goal of all the QA practices. However, all the defects diverge from each other. It cannot be stated if some are more important than others, yet it’s possible to locate and fix them all.
Fundamentals of testing - Testing & Implementationsyogi syafrialdi
As we go through this section, watch for the Syllabus terms bug, defect, error, failure, fault, mistake, quality, risk, software, testing and exhaustive testing. You'll find these terms defined in the glossary.
Software testing is entirely about finding defects in applications, right? Apparently, this can be considered as the principal goal of all the QA practices. However, all the defects diverge from each other. It cannot be stated if some are more important than others, yet it’s possible to locate and fix them all.
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Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
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Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
The Roman Empire A Historical Colossus.pdfkaushalkr1407
The Roman Empire, a vast and enduring power, stands as one of history's most remarkable civilizations, leaving an indelible imprint on the world. It emerged from the Roman Republic, transitioning into an imperial powerhouse under the leadership of Augustus Caesar in 27 BCE. This transformation marked the beginning of an era defined by unprecedented territorial expansion, architectural marvels, and profound cultural influence.
The empire's roots lie in the city of Rome, founded, according to legend, by Romulus in 753 BCE. Over centuries, Rome evolved from a small settlement to a formidable republic, characterized by a complex political system with elected officials and checks on power. However, internal strife, class conflicts, and military ambitions paved the way for the end of the Republic. Julius Caesar’s dictatorship and subsequent assassination in 44 BCE created a power vacuum, leading to a civil war. Octavian, later Augustus, emerged victorious, heralding the Roman Empire’s birth.
Under Augustus, the empire experienced the Pax Romana, a 200-year period of relative peace and stability. Augustus reformed the military, established efficient administrative systems, and initiated grand construction projects. The empire's borders expanded, encompassing territories from Britain to Egypt and from Spain to the Euphrates. Roman legions, renowned for their discipline and engineering prowess, secured and maintained these vast territories, building roads, fortifications, and cities that facilitated control and integration.
The Roman Empire’s society was hierarchical, with a rigid class system. At the top were the patricians, wealthy elites who held significant political power. Below them were the plebeians, free citizens with limited political influence, and the vast numbers of slaves who formed the backbone of the economy. The family unit was central, governed by the paterfamilias, the male head who held absolute authority.
Culturally, the Romans were eclectic, absorbing and adapting elements from the civilizations they encountered, particularly the Greeks. Roman art, literature, and philosophy reflected this synthesis, creating a rich cultural tapestry. Latin, the Roman language, became the lingua franca of the Western world, influencing numerous modern languages.
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
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It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
2. In this chapter,we will introduce you to the fundamentals of
testing:why testing is needed; its limitations,objective sand
purpose;the principles behind testing; the process that
testers follow; and some of the psychological factors that
testers must consider in their work. By reading this chapter
you'll gain an understanding of the fundamentals of testing
and be able to describe those fundamentals.
3. In this section, we're going to kick off the book with a discussion on why
testing matters. We'll describe and illustrate how software defects or
bugs can cause problems for people, the environment or a company.
We'll draw important distinctions between defects, their root causes and
their effects. We'll explain why testing is necessary to find these defects,
how testing promotes quality, and how testing fits into quality assurance.
In this section, we will also introduce some fundamental principles of
testing.
As we go through this section, watch for the Syllabus terms bug, defect,
error, failure, fault, mistake, quality, risk, software, testing and
exhaustive testing. You'll find these terms defined in the glossary.
4. Testing is done differently in different contexts. For example, safety-critical software
istested differently from an e-commerce site. These days, almost everyone is aware of
software systems.Some of the problems we encounter when using software are quite trivial,but others can be costly and damaging
- with loss of money, time or businessreputation - and even may result in injury or death. For example, suppose
auser interface has typographical defects. Does this matter? It may be trivial, butit could have a significant
effect, depending on the website and the defect:
If my personal family-tree website has my maternal grandmother's maidenname spelt wrong, my
mother gets annoyed and I have to put up with somefamily teasing, but I can fix it easily and only the
family see it (probably).
If the company website has some spelling mistakes in the text, potential customers may be put off the
company as it looks unprofessional.
If a software program miscalculates pesticide application quantities, theeffect could be very significant:
suppose a decimal point is wrongly placed sothat the application rate is 10 times too large. The farmer
or gardener usesmore pesticide than needed, which raises his costs, has environmentalimpacts on
wildlife and water supplies and has health and safety impact forthe farmer, gardener, family and
workforce, livestock and pets. There mayalso be consequent loss of trust in and business for the
company and possible legal costs and fines for causing the environmental and health problems.
Software systems context
5. If someone makes an error or mistake in using the software, this may leaddirectly to
a problem - the software is used incorrectly and so does not behaveas we expected.
However, people also design and build the software and theycan make mistakes during the
design and build. These mistakes mean that thereare flaws in the software itself. These are
called defects or sometimes bugs orfaults. Remember, the software is not just the code;
check the definition of soft-ware again to remind yourself.
When the software code has been built, it is executed and then any defects maycause the
system to fail to do what it should do (or do something it shouldn't),causing a failure. . Not all
defects result in failures; some stay dormant in the codeand we may never notice them.
Causes of software defects
6. ▪ errors in the
specification, design
and implementation of
the software
andsystem;
6
▪ errors in use of the
system;
▪ environmental
conditions;
▪ intentional
damage;
When we think about what might go wrong we have to consider defects andfailures arising from:
1 2 3 4 5
7. Role of testing in software development,
maintenance and operations
We have seen that human errors can cause a defect or fault to be introduced atany
stage within the software development life cycle and, depending upon
theconsequences of the mistake, the results can be trivial or catastrophic.
Testing and quality
Testing helps us to measure the quality of software in terms of the number ofdefects
found, the tests run, and the system covered by the tests. We can do thisfor both the
functional attributes of the software (for example, printing a reportcorrectly) and for the
non-functional software requirements and characteristics(for example, printing a report
quickly enough).
Testing can give confidence in the quality of the software if it finds few or no defects, provided we are happy that the
testing is sufficiently rigorous . Of course, a poor test may uncover few defects and leave uswith a false sense of
security. rigorous
· adj.
1 extremely thorough, exhaustive, or accurate.
2 (of a rule, system, etc.) strictly applied or adhered to. Ø adhering strictly to a belief, opinion, or system.
3 (of weather) harsh.
– DERIVATIVESrigorously adv. rigorousness n.
– ORIGIN ME: from OFr. rigorous or late L. rigorosus, from rigor (see rigor1).
8.
9. Projects aim to deliver software to specification. For the project to deliverwhat the
customer needs requires a correct specification. Additionally, thedelivered system must
meet the specification. This is known as validation ('isthis the right specification?') and
verification ('is the system correct to specification?'). Of course, as well as wanting the
right software system built correctly, the customer wants the project to be within budget and
timescale – itshould arrive when they need it and not cost too much.
The ISTQB glossary definition covers not just the specified requirements butalso user and
customer needs and expectations. It is important that the projectteam, the customers and
any other project stakeholders set and agree expectations. We need to understand what
the customers understand by quality andwhat their expectations are.
What we as software developers and testers maysee as quality – that the software meets
its defined specification, is technicallyexcellent and has few bugs in it –may not provide a
quality solution for our customers.
Furthermore, if our customers find they have spent more money thanthey wanted or that
the software doesn't help them carry out their tasks, theywon't be impressed by the
technical excellence of the solution. If the customerwants a cheap car for a 'run-about' and
has a small budget then an expensivesports car or a military tank are not quality solutions,
however well built theyare.