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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘Testing’ Category

Why a study with only 7 respondents can be good – from Dutch paper “De Volkskrant”

Posted by jpluimers on 2021/01/07

[] Waarom een onderzoek met maar 7 respondenten toch goed kan zijn | De Volkskrant: Denkfouten in het hedendaags ontwerp gefileerd door innovatie-expert (en cabaretier) Jasper van Kuijk. Deze week: gebruikstest.

Google translated in English.


Quantitative studies often require large numbers of respondents, but quantitative studies can be done with a very small group.

While quantitative studies often will get you just one result (I rate this application a 7 out of 10, or with this A/B change, click through increases by 5%), qualitative studies will get you much more specific comments like “the main menu is cluttered”, or “the design is slick” (translated from the Image in the article).

Extensive research was done for a 2003 published paper [] Beyond the five-user assumption: Benefits of increased sample sizes in usability testing which you can read as PDF [WayBack].


[WayBack] Jasper van Kuijk on Twitter: “Mijn ‘Hoe moeilijk kan het zijn?’ van vandaag. Waarom voor gebruiksgemak een gebruikstest met 7 participanten nuttiger is dan een enquête met 1500 respondenten. #HMKHZ via de @volkskrant”


[WayBack] Ionica Smeets on Twitter: “Hear, hear! Aldus een wiskundige die heel wat jaren nodig had om waarde van kwalitatief onderzoek in te zien…”




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Posted in Software Development, Development, Usability, User Experience (ux), Testing | Leave a Comment »

GitHub – DevExpress/testcafe: A Node.js tool to automate end-to-end web testing.

Posted by jpluimers on 2020/12/09

In my list of things to play with: [WayBack] GitHub – DevExpress/testcafe: A Node.js tool to automate end-to-end web testing.:

A Node.js tool to automate end-to-end web testing.
Write tests in JS or TypeScript, run them and view results.

  • Works on all popular environments: TestCafe runs on Windows, MacOS, and Linux. It supports desktop, mobile, remote and cloud browsers (UI or headless).
  • 1 minute to set up: You do not need WebDriver or any other testing software. Install TestCafe with one command, and you are ready to test: npm install -g testcafe
  • Free and open source: TestCafe is free to use under the MIT licensePlugins provide custom reports, integration with other tools, launching tests from IDE, etc. You can use the plugins made by the GitHub community or make your own.


  • [WayBack] A node.js tool to automate end-to-end web testing | TestCafe:

    Use TestCafe to write tests in JS or TypeScript, run them and view results. TestCafe runs on Windows, MacOS, and Linux and takes 1 minute to set up.

  • [WayBack] TestCafe: Web Testing Framework | DevExpress

    100% web-based functional testing framework with integrated visual test recorder, remote device testing, and natural JavaScript API

    • From download to recording your first test in less than 5 minutes — installer automatically configures your environment.
    • With TestCafe, you can run tests in any browser that supports HTML5 (including IE9+, Chrome, Firefox, Safari, Opera).
    • TestCafe is operating system agnostic so you can run tests on Windows, Mac or Linux machines.
    • Run tests on remote computers and mobile devices.
    • Run tests in multiple browsers and on multiple machines in parallel.
    • Run tests in the background on any machine.
    • TestCafe allows you to test web pages that require Basic and Windows HTTP Authentication.


Screen materials below the fold.


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Posted in Development, JavaScript/ECMAScript, LifeHacker, Power User, Scripting, Software Development, Testing, Web Development | Leave a Comment »

Some links on assembling a proper Katalon .gitignore file

Posted by jpluimers on 2020/10/29

I used these links to find out what entries a Katalon .gitignore file should contain:

Combining the above, the .gitignore file needs to at least contain:


(funny that .svn should be in a .gitignore file and that various combinations of casing are used)


Posted in Development, DVCS - Distributed Version Control, git, Katalon, Software Development, Source Code Management, Testing | Leave a Comment »

Enable your device for development – UWP app developer | Microsoft Docs

Posted by jpluimers on 2020/10/20

From [WayBack] Enable your device for development – UWP app developer | Microsoft Docs:

Run these as administrator on the command prompt to:

Enable Sideloading

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowAllTrustedApps" /d "1"

Enable Developer Mode

reg add "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock" /t REG_DWORD /f /v "AllowDevelopmentWithoutDevLicense" /d "1"

Needed for WinAppDriver to test applications from Selenium or Katalon

When you run WinAppDriver without it, you get this:

C:\Users>"C:\Program Files (x86)\Windows Application Driver\WinAppDriver.exe"
Failed to initialize: 0x80004005
Despite WinAppDriver running fine as non-administrative user, the reason was given that it requires administrative privileges: [WayBack] Why does WinAppDriver.exe require developer mode? · Issue #165 · Microsoft/WinAppDriver · GitHub.

SetCapabilities name parameters and values

Various searches for what to pass as parameters to SetCapabilities failed, but the list is right at the README, but without any mention SetCapabilities, so search engines miss it with for instance “SetCapabilities” “WinAppDriver” – Google Search that only returned these links:

Supported Capabilities

Below are the capabilities that can be used to create Windows Application Driver session.

Capabilities Descriptions Example
app Application identifier or executable full path Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge
appArguments Application launch arguments
appTopLevelWindow Existing application top level window to attach to 0xB822E2
appWorkingDir Application working directory (Classic apps only) C:\Temp
platformName Target platform name Windows
platformVersion Target platform version 1.0


Posted in Conference Topics, Conferences, Development, Event, Katalon, Software Development, Testing | Leave a Comment »

Ingo Philipp on Twitter: “Top ten songs for #testers and #developers at #StarWest. I suggest “I see fire” (Ed Sheeran).… “

Posted by jpluimers on 2019/12/04

[WayBack] Ingo Philipp on Twitter: “Top ten songs for #testers and #developers at #StarWest. I suggest “I see fire” (Ed Sheeran).… “

Top 10 songs for testers Top songs for developers
  1. Tragedy
  2. I don’t want to miss a thing
  3. Here we go again
  4. All by myself
  5. That don’t impress me much
  6. One way or another
  7. I heard it through the grapevine
  8. I’m still waiting
  9. Another one bites the dust
  10. I still haven’t found what I’m looking for
  1. I did it my way
  2. Under pressure
  3. It’s now or never
  4. Rebel rebel
  5. Killing me softly
  6. Unbreakable
  7. In a little world of our own
  8. One more night
  9. I should be so lucky
  10. Oops I did it again

Via [WayBack] Top ten songs for #testers and #developers at #StarWest. I suggest “I see fire” (Ed Sheeran). – Kristian Köhntopp – Google+


Posted in Agile, Development, Software Development, Testing | Leave a Comment »

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