Use case

The Windows platform does not implement the mapping of Semantics.identifier property to automationId, which is usefull in automated test, specifically using Appium.

This is implemented for iOS and Android:

• Missing accessibility-id for testing purposes #17988 (comment)
• Add accessibility identifier to SemanticsProperties #138331
• Add support for exposing accessibility identifier as resource-id on Android engine#47961
• Add support for exposing accessibility identifier as accessibilityIdentifier on iOS engine#48858

Windows favors automationId for automated testing:

• https://learn.microsoft.com/en-us/dotnet/framework/ui-automation/using-ui-automation-for-automated-testing#automationid
• https://learn.microsoft.com/en-us/windows/win32/winauto/uiauto-usefortesting#key-properties-for-test-automation

Proposal

The Flutter engine should map Semantics.identifier to automationId.