Software Quality – Lecture # 1
COMP 10066
Week 1 Lecture
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Why Testing?
How does this course fit in to my studies?
Software Testing is a growing field and is becoming extremely important as software touches more of what we do on a daily basis
As the complexity of software increases, testing has become more and more important.
An appreciation for testing results in programmers producing better code.
Many entry level positions software developers will be hired as testers first.
Lecture Summary
What is Testing?
What is Quality?
How can we determine the quality of anything?
How do we relate Quality and Testing
Defining Software Testing
Is an Empirical / methodical investigation conducted to provide information on a software program.
Goal of Software Testing
What is the goal of a Software Tester?
TO FIND BUGS.
To Find bugs as early as possible in the Software development process and to make sure that they get fixed (in a reasonable time)
Types of Testing and Application
https://www.scnsoft.com/blog/software-development-models
Defining Quality Assurance (QA)
Systematic Monitoring and evaluation of different aspects of a product to ensure that standards of quality are being used
Goal of Quality Assurance
What is the goal of Quality Assurance?
Ensure that processes and procedures are followed and to improve the process with the goal that process improvements will result in improving the software.
Will reduce the probability of bugs getting into the software in the first place.
Programmers Involvement in Testing
Are programmers responsible for any of the activities involved in Software Quality and Testing? What are they?
Build code that is well-documented that follows best practices and provide proof that the code meets the specification
Defining ISO Certification
What is ISO?
International Standards Organization
What is ISO 9000?
Standard for Quality Assurance
Name the two sections of the ISO standard that apply to Software Development?
ISO 9000-3
ISO Certification
What are the two main goals of the ISO 9000 process?
Targets the Development Process – How does an Organization complete its work.
Tells an organization what process to follow to achieve quality.
What needs to be done – Does not enforce a particular method.
ISO 9000, ISO 9000-3
Areas that need to be addressed for software development
ISO 9000-3, Primary Areas of Concern
configuration management,
change control,
development planning,
quality planning,
design and implementation,
testing and validation
maintenance.
Software Testing Careers
What are some of the different job titles associated with Software Testing?
Test Technician
Test Engineer
Software Tester
Test Automation Specialist
Test Lead – Test plan developer/manager
Test Manager – Oversees all testing within an Organization
QA Engineer
Many software development jobs, also list software testing as a part of the job requirements
Traits of a Software Tester
What are some of the important traits that a good software tester should have?
Like to Explore
Likes to Troubleshoot
Relentless
Creative – Develop tests that will expose problems
“Somewhat” of a Perfectionist
Tactful and Diplomatic
Persuasive – Needs to convince people of the importance of correcting the bugs.
Attention to detail
What makes Software high quality?
Provide some of the attributes of High Quality Software:
Accurate/Complete Documentation
UI follows standards for the device/OS
Behaves: Accurately, Predictably, Reliably, Consistently
Does what the user/specification says it should do.
Where does testing fall on the Software Development Lifecycle?
Waterfall – Thorough specification
Testing: A complete phase of testing once development is complete
Testing can be designed from the specification
Should result in well defined accurate tests
https://pmvidya.com/blog/waterfall-model/
Where does testing fall on the Software Development Lifecycle?
Evolutionary / Agile / Spiral
Testing: Test phases are integrated throughout the development cycle.
Core Tests can be run regressively as new features are added
Core tests must be designed well.
New tests will need to be added as new features are added
Limitations of Software Testing
What are some of the realities or limitations of testing software that all parties involved in the development or use of software must be aware of?
Not all bugs will be found / fixed in any significantly large system.
You can’t write tests for all cases
Some bugs are too risky to fix.
May break other components of a tightly integrated system.
It may not be worth it to fix the bug
Limited number of users, simple workaround
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