SOFTWARE TESTING

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TeachersSophea OuFrancois Le Notre

WELCOME TO SOFTWARE TESTING CLASS!

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Understanding software testing

Chapter 1

- Why software testing?- What is software testing?- Determine the risks of an application- A useful skill: attention to details

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Why software testing?

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Lethal consequences: Therac 25 case

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NASA Mars Climate Orbiter & Polar lander failure: nearly $350million loss

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Game activity!

Let's guess the impact of some bugs...

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Blue screen bug on Department store

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Online retailer of car parts in United Kingdom

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You just bought a pack of biscuits!

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Current result VS expected result

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Why software testing?

- Software failures can lead to disastrous consequences

=> Testers need to detect the risks and the bugs with severe consequences in a software

- Customers will NOT give a 2nd chance to your product if it fails to do what they are expecting

=> Testers need to verify that the software behaves as it is intended to behave

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Testing cycle

Question requirements

Study and question specifications

Design a test plan

Execute tests scenarii

Report bugs

Report the software state

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“Value to anyone who matters“

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Software quality

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When do we test?

Testing should start as early as possible!

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ActivityRisks of a Daelim motorcycle...

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Useful skills for a tester

Attention to details

Do you have it?

Let's check with a video...

Last chance :)

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What have we learnt today?

Risks & threats to customers

Customer's expectations

Testing is an investigation

Attention to detailswill be key

Software value

Testing shouldStart early

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At home...

Think about and write:•1 severe bug in real life•1 low impact bug

We will review together at the next sessionWe will review together at the next sessionSubmit your work on google class room: Submit your work on google class room: n4lgttn4lgtt

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