delete method

@override Future<void> delete(String key)

Removes any value stored under key.

A no-op if the key is absent. After this completes, a subsequent load for the same key must return null.

Throws an exception if the delete operation fails.

Implementation

@override
Future<void> delete(String key) async {
  deleteCount++;
  _deletedKeys.add(key);
  if (deleteDelay != null) await Future<void>.delayed(deleteDelay!);
  if (deleteError != null) throw deleteError!;
  _data.remove(key);
}