During March 2025, Dmytro Lychak focused on refining the DynamoRevit test suite to improve regression reliability following model upgrades. Working within the DynamoDS/DynamoRevit repository, he updated the DynamoAllSelectionNodeTests_WithPreSelectedEntities test to accurately assert the new element count at level 2, reflecting changes in mullion levels and their relationship to host curtain walls. Using C#, the Revit API, and unit testing frameworks, Dmytro ensured that test coverage remained robust and that architectural relationships were preserved across upgrade scenarios. This work reduced false test failures and streamlined validation cycles, demonstrating careful attention to detail and a methodical approach to software testing.