How to add resource-id to android in react-native

I was trying to use firebase TestLab but it seems that it can only target resource-id. I had my elements like this:

<Input {...props} testID="usernameIput" />

But it seems that the testID is not mapped to the resource-id. If this is not the way to do it, then how can I get access to resource-id within react-native? If I can't what is the work around to add resource-id in android studio?