expectListContains method
Implementation
void expectListContains({required String listId, required String text}) {
final listFinder = finderForId(listId);
final match =
find.descendant(of: listFinder, matching: find.textContaining(text));
if (match.evaluate().isEmpty) {
throw EnsembleTestFailure(
'Expected list "$listId" to contain text "$text".',
);
}
}