Cleanup is more idiomatic way to clean test data Signed-off-by: Alex Vanin <alexey@nspcc.ru>
Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>
All parameters and resulting values of all metabase operations are structured in new types. The most popular scenarios for using operations are moved to auxiliary functions. Signed-off-by: Leonard Lyubich <leonard@nspcc.ru>