Trying to use the `testTag` Modifier on a Text composable that’s a part of the AdapterList. I’m gett...

# compose

[Vinay Gaba]

Trying to use the testTag Modifier on a Text composable that’s a part of the AdapterList. I’m getting this error

java.lang.IllegalStateException: merge function called on unmergeable property TestTag. Existing value: Composable1, new value: Composable2. You may need to add a semantic boundary.
	at androidx.ui.semantics.SemanticsPropertyKey.merge(SemanticsProperties.kt:95)

Do I need to use this differently when used inside an AdapterList?

[Leland Richardson [G]]

cc @Ryan Mentley

[Ryan Mentley]

Does the AdapterList also have a test tag?

[Vinay Gaba]

I believe it didn’t when I tested this first but now it does. I’ll try it again with tags at both the places and report back. Thanks for the tip!

[Ryan Mentley]

Rather, I expect that might cause it - or at least, something above it having a test tag would

[Ryan Mentley]

We're making some changes in this area to make it a little more intuitive

[Ryan Mentley]

The specific issue you're running into has been addressed, but it's not released

[Ryan Mentley]

In the meantime, if you put a semantics with container = true around your AdapterList items, that should fix it

[Vinay Gaba]

Is it recommended to wrap with a Semantics in production code?

[Vinay Gaba]

asked differently, what is the cost of using Semantics?

[Ryan Mentley]

Generally, setting Semantics correctly for production code will enable accessibility to work properly. This area is in a bit of flux currently, though, so you won't need to (i.e., it will automatically do the right thing) after some of our changes