1_Software Testing Fundamentals

7/29/2019 1_Software Testing Fundamentals

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Why do we need testing?

Why do defects occur in software?

What do software faults cost? What is software testing?

Testing as part of development

Skills of a good tester


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Core constituent of modern productsand services.

Collection of computer relatedprograms, procedures, and algorithmswhich provides the system what to doand how to do it.


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Is a process-centered approach toensure that a company or organization is

providing the best possible products orservices.


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To reduce and mitigate risk.

To find the most important faults before

the software is released to live operation.


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Customer/user

Competitor

Magazine editor/blogger Systems integrator

Potential

Partner Subcontractor

employee


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Software is written by human beings.

Under increasing pressure to deliver to

strict deadlines. Software is complex


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Education

Communication

Oversight Transcription

Process


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Huge sums

Very little or nothing at all

Software is not linear


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Is a process, or a series of processes,designed to make sure computer code

does what it was designed to do andthat it does not do anything unintended.


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Trying out if the system works Trying to break the system Finding and reporting defects

Demonstrating correct functionality Demonstrating incorrect functionality Demonstrating reliability, security, and maintainability Measuring performance and reliability Evaluating and measuring quality

Proving the software is correct Executing pre-defined test cases Automatic error detection


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Often, testing is seen as some separate, last phase ofsoftware development process

That can be outsourced to separate testing team That only deeds to be done just before the releaseif

there is any time Testing can not be separated from rest of the

software development Testing is much more than the final acceptance

testing phase Testing has to be involved from the beginning Testers can, and should, contribute in each phase of

the software development life-cycle Testing is not a phase


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Testers (destructive) attitude and mindset Excellent communication skills Ability to manage many details

Know the different testing techniques and strategiesand know when and how to apply them

Be familiar with the domain the software is targeted Comprehensive knowledge of the software

engineering discipline

Knowledge and experience of how software isspecified, designed, and developed Knowledge of fault and failure types


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1_Software Testing Fundamentals