The recent CrowdStrike incident is estimated to have “affected 8.5 million Windows devices” [1] and may have been “the worst cyber event in history” [1] How should we understand its impact on quality? Genichi Taguchi’s definition of quality helps us understand how the CrowdStrike incident affected quality. He wrote that “quality is the loss a …
Category Archives: Testing
My new guiding principles are helping me to automate tests.
It is useful to have guiding principles on how to be a good employee, teammate and tester. I work in teams that describe themselves as lean or agile and so I am interested in learning what lean and agile are. Learning about how lean and agile came about helps me understand them. John Willis has …
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Whoever you are, whatever you have achieved you should recognise the achievements of others
Dr Joseph Juran rose from poverty to be an internationally respected management consultant who specialised in quality. His work included popularising the use of the Pareto Principle and creating The Juran Trilogy. Juran focussed on the role of management in quality. He wrote and contributed to many books including six volumes of Juran’s Quality Handbook. …
Use code reviews to have discussions about your test automation code
Learning from discussions originating from code reviews is helping me create a pack of automated tests using TypeScript and Playwright. I have been developing a pack of Playwright tests with a Page Object Model. A simplified example of a page in the Page Object Model looked something like this: A simplified example of a test: …
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Two ways of learning that benefit testing
Testers are learning all the time. I have been reading John Dues’ new book Win-Win: W. Edwards Deming, the System of Profound Knowledge, and the Science of Improving Schools with the Profound Deming Book Club and have gained insights into different ways of learning. “Moving from planning to doing is deductive learning and moving from …
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A Great Self-Organising Team
The SIGiST Summer 2024 Conference was a great success. The British Computer Society hosted the conference at its London office. We had nearly 200 delegates, which is more than at previous conferences. Over twenty speakers gave interesting and inspiring talks. It was great to have speakers for whom this was their first experience of speaking …
How do you decide which tests to automate?
An end-to-end test pack needs to run quickly so that it does not slow developers, and at the same time provide useful feedback to the developers. This makes deciding which categories of tests to include in the test pack challenging. A ten-minute video from Russ Ackoff has helped me better understand my decisions on one …
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Who is responsible for quality? Is it the tester, or the team?
I have been reading John A. Dues’ new book Win-Win W. Edwards Deming, the System of Profound Knowledge, and the Science of Improving Schools with the Deming Profound Book Club. John Dues uses an equation to describe who is responsible for student performance[1]. This equation works as a useful analogy to describe who is responsible …
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How to help your team complete their work and so have more time for testing
Testing can be hard, particularly when time is short because the team has a tight schedule. While working with Rob Falla I learned to use Critical Path Analysis to help my team deliver work on time, which helped me have more time for testing. Sometimes it is hard to complete the work that a team …
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Gain insights by using control charts to analyse your performance test results
On Friday 16 May 1924 Walter Shewhart gave his manager at Bell Telephone Laboratories a memo. The memo “suggested a way of using statistics to improve quality in telephones.[1]” Shewhart’s memo proposed using Statistical Process Control, including Control Charts for visualisation, to improve quality. Shewhart sparked “a revolution in quality control”[2] that can help us …
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How long will that test automation take?
Sometimes testers are asked how long it will take to automate a batch of tests. Planning how long your test automation should be simple, however, the plan will have missed some requirements. There are three types of requirements[1]: “We will never understand all the requirements of a story ahead of time”[2], this applies to test …
Do Chromatic tests complement Playwright tests?
I am using Playwright to automate end-to-end tests, and have started to complement my Playwright tests with Chromatic tests. The Playwright tests are really useful, but each test needs to run through several steps to create a scenario I want to test. Creating a Playwright test for each input variation for each part of the …
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Cooperation helps to improve testing, helps testers and helps the company
Testers can help increase cooperation across the company, and cooperation will help us and the company. Testers give feedback to developers when we test. We should also get feedback from other departments and customers on our work and the product we are testing. The feedback we get from cooperating with other departments brings the perspectives …
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Think slowly when you are testing And Think slowly when you are automating
I am interested in how thinking slowly can help me test and I have been reading Gene Kim and Steven Spear’s new book Wiring the Winning Organization: Liberating Our Collective Greatness Through Slowification, Simplification, and Amplification with the Deming Profound Book Club. Spear and Kim acknowledge how Daniel Kahneman, who recently passed away, influenced them …
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It is better if we build quality into the product instead of trying to test quality in
“Cease dependence on inspection to achieve quality. Eliminate the need for inspection on a mass basis by building quality into the product in the first place.” [1] is one of W. Edwards Deming’s 14 Points for Management. Inspection can be defined as testing after development has been completed. Some people have interpreted Deming’s point as …
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