refactor: use mock test utils in filled tree test#319

AvivYossef-starkware merged 2 commits intomainstarkware-libs/committer:mainfrom

07-17-refactor_use_mock_test_utils_in_filled_tree_teststarkware-libs/committer:07-17-refactor_use_mock_test_utils_in_filled_tree_testCopy head branch name to clipboard