RootForTest

open fun forceAccessibilityForTesting(enable: Boolean): Unit

Force accessibility to be enabled for testing.

open fun measureAndLayoutForTest(): Unit

Requests another layout (measure + placement) pass be performed for any nodes that need it. This doesn't force anything to be remeasured that wouldn't be if requestLayout were called. However, unlike requestLayout, it doesn't merely schedule another layout pass to be performed, it actually performs it synchronously.

This method is used in UI tests to perform layout in between frames when pumping frames as fast as possible (i.e. without waiting for the choreographer to schedule them) in order to get to idle, e.g. during a waitForIdle call.

@ExperimentalIndirectPointerApi
open fun sendIndirectPointerEvent(indirectPointerEvent: IndirectPointerEvent): Boolean

Send this IndirectPointerEvent to the focused component in this Owner.

fun sendKeyEvent(keyEvent: KeyEvent): Boolean

Send this KeyEvent to the focused component in this Owner.

open fun setAccessibilityEventBatchIntervalMillis(intervalMillis: Long): Unit

Set the time interval between sending accessibility events in milliseconds.

This is the delay before dispatching a recurring accessibility event in milliseconds. It delays the loop that sends events to the accessibility and content capture framework in batches. A recurring event will be sent at most once during the intervalMillis timeframe. The default time delay is 100 milliseconds.

open fun setUncaughtExceptionHandler(
    handler: RootForTest.UncaughtExceptionHandler?
): Unit

Sets the UncaughtExceptionHandler callback to dispatch layout, measure, and draw exceptions from this Composition to. If this method is called multiple times, the previous callback is discarded.

The default test runners that ship with the Compose UI test and associated JUnit variation use this API to reroute exceptions back to the test under execution. Custom test runners may need to associate their own exception handler to do the same. If the Compose UI Test runner's exception handler is overwritten, it may lead to unhandled exceptions crashing the instrumented process and terminating the entire test suite early.

val density: Density

Current device density.

val semanticsOwner: SemanticsOwner

Semantics owner for this root. Manages all the semantics nodes.

val textInputService: TextInputService

The service handling text input.