Hi, I'd really like to be able to use my Model dat...

# compose

[Kevin Hester]

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)

[Mark Murphy]

what is the implementation of getSettings() on Channel ?

[Chuck Jazdzewski [G]]

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.

[Kevin Hester]

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

[Kevin Hester]

@Chuck Jazdzewski [G] that will work for me for now - thanks!

[Blundell]

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?

[Chuck Jazdzewski [G]]

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.