State transition diagrams help to define tests

Identifying what states exist in functionality and how changes in state take place enables testers to identify tests that should be executed. State transition diagrams provide simple notation for summarising states and how changes in states take place. I recently used a state transition diagram on a project and it helped me identify the tests …

Testing messaging with a decision table

Recently I was testing the messages sent from an app to the user when I noticed that the messages were dependent on the interaction of three conditions. I used a decision table to analyse the messaging because decision tables show how many tests are required to test something that is affected by a group of …

How Can I Test This? an app with microservices

“How Can I Test This?” is a book that contains examples of how to test different sites and apps along with test heuristics applied, the reasoning as well as ideas for which tools will help testing. The book aims to be useful both to new testers and to more experienced testers, and has just been …

I often “see” functionality I am testing as a tree diagram

Creating a tree diagram can be a helpful way to visualise functionality that is accessed via hierarchical structures like menus and the tree diagrams can help to plan testing. In my mind’s eye I often see functionality as a tree diagram. C.S French says that trees are “hierarchical data structures rather like the familiar family …

Can decision tables help you test API endpoints?

I recently saw a comment about how testers should be able to use decision tables to aid their testing. I decided to refresh my understanding of them and these are the notes I created about them. Decision tables are an analytical tool. They are used to describe logic and can be helpful in understanding the …

How can you work with your team to identify risks?

Identifying risks to their work helps development teams.  Recently I spoke to a team who had talked through the ways in which their work could fail, and built on this to identify risks to their work. The team adapted Failure Modes Effects Analysis (FMEA) to suit their needs. FMEA is a technique that is used …

How do you decide when to stop testing?

There is always more testing that  can be done on a feature but there are reducing returns on testing a feature over time. At some point you need to stop testing, and the question as to when to stop is sometimes a difficult call. Also, sometimes there is more than one feature to be tested. …

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