Mutest::Meta::Example.add :hash do source '{true => true, false => false}' singleton_mutations # Mutation of each key and value in hash mutation '{ false => true , false => false }' mutation '{ true => false , false => false }' mutation '{ true => true , true => false }' mutation '{ true => true , false => true }' # Remove each key once mutation '{ true => true }' mutation '{ false => false }' # Empty hash mutation '{}' end