Hi, I'd really like to be able to use my Model data classes in my junit tests. (where I'm not running under compose). Is there a way to prevent the following error in this case? java.lang.IllegalStateException: Not in a frame at androidx.compose.frames.FramesKt.currentFrame(Frames.kt:180) at androidx.compose.frames.FramesKt.readable(Frames.kt:448) at androidx.compose.frames.FramesKt._readable(Frames.kt:456) at com.geeksville.mesh.model.Channel.getSettings(UIState.kt) at com.geeksville.mesh.model.Channel.getChannelUrl(UIState.kt:60) at com.geeksville.mesh.model.ChannelTest.channelUrlGood(ChannelTest.kt:11) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50) ... at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)

what is the implementation of

getSettings()

on

Channel

?

The most reliable way to modify an

@Model

object is to modify it in the main thread by, for example, posting a method to execute on that thread and waiting for it to complete. However, you can also open a frame in another thread using

open()

from

androidx.compose.frames

. For example, this is what the frames tests do here.

@Mark Murphy here it is: https://github.com/geeksville/Meshtastic-Android/blob/map/app/src/main/java/com/geeksville/mesh/model/UIState.kt#L27

Forgive me for not diving into the details, but @Chuck Jazdzewski [G] shouldn’t whatever thread the unit tests are run on be considered the MainThread?

The main thread is the main thread from the perspective and Android. The unit test threads, unless requested, are not on the main UI thread. When I say main thread, I mean the UI thread not the test thread.