Is it possible to write unit tests for a Compose Desktop pro

Question

Is it possible to write unit tests for a Compose Desktop project If so is there any getting started page somewhere to help

jw · Answer

What are you trying to test Compose logic no UI A UI function A whole screen

Marc Fearby · Answer

I want to test the UI Logic shouldn t be a problem to test

Marc Fearby · Answer

I want to test the UI kind of like Selenide would test a web page as a user would type and click the mouse

jw · Answer

Got it I personally have no idea if any libraries have made it to Desktop for this or not In general the one on Android operates on the semantics tree which is also the place where accessibility information lives So you can wait for items to appear parse the semantics of items their text image descriptions etc and then perform interactions on the equivalent node type touch etc

Marc Fearby · Answer

Thanks I ll check that out This looks like a good quick video to cover the basics <https www youtube com watch v=JyUJZvJ OV8>

Marc Fearby · Answer

I tried doing a basic test but I m getting this error `Unresolved reference createComposeRule` caused by adding this to a new test class ``` get Rule val rule = createComposeRule ``` the relevant section of my build gradle kt looks like this but I feel like I m copying various suggestions from the web and getting nowhere I think some official docs on this would be beneficial but maybe testing is not ready yet ```val jvmTest by getting dependencies implementation kotlin test junit implementation junit junit 4 13 2 ```

Michael Paus · Answer

Did you add the dependencies mentioned at 0 40 of that video

Marc Fearby · Answer

Yes I tried adding those but just get these errors which is why I tried to find an answer in google `Unresolved reference androidTestImplementation` `Unresolved reference debugImplementation`

Marc Fearby · Answer

This is the code for my project here just started <https github com mfearby Magnificat>

Arkadii Ivanov · Answer

You can test the UI and mock fake the logic I played with it recently <https github com arkivanov Decompose blob master sample shared compose src jvmTest kotlin com arkivanov sample shared counters counter CounterContentTest kt|https github com arkivanov Decompose blob master sample shared compose src jvmTest kotlin com arkivanov sample shared counters counter CounterContentTest kt>

Marc Fearby · Answer

There s definitely a lot more going on in his build gradle compared to mine so I ll check it out Thank you

Marc Fearby · Answer

This is what I needed in my jvmTest dependencies to successfully import the necessaries for `createComposeRule ` ```implementation org jetbrains compose ui ui test junit4 1 2 1 ```