Topic: `clearAndSetSemantics` function this :point_down: removed the `testTag` from the merged tree...

# compose

[theapache64]

Topic: clearAndSetSemantics function

this 👇 removed the testTag from the merged tree

Box(
    modifier = Modifier
        .clearAndSetSemantics {
            contentDescription = "My Red Box"
        }
        .testTag("red_box")
        .size(100.dp)
        .background(Color.Green)
) {

}

but moving the clearAndSet call after testTag doesn’t

Box(
    modifier = Modifier
        .testTag("red_box")
        .clearAndSetSemantics {
            contentDescription = "My Red Box"
        }
        .size(100.dp)
        .background(Color.Green)

) {

}

Why modifier order works reverse here? 🤔

[Zach Klippenstein (he/him) [MOD]]

It’s not reverse. Modifiers always apply to stuff under/after them. The clearAndSetSemantics function clears the semantics of everything under/after it.

[theapache64]

ohk. thanks

[theapache64]

@Zach Klippenstein (he/him) [MOD] isn’t that conflicting with this ? 🤔

[Zach Klippenstein (he/him) [MOD]]

The testTag semantics property is defined to always take the parent when merging: https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:compose/ui/ui/src/commonMain/kotlin/androidx/compose/ui/semantics/SemanticsProperties.kt;l=190;drc=0cb8439fd35cbcc62b5c9f3ca8e342a2b4904aac