Worked on enhancing the reliability of data import in the ankidroid/Anki-Android repository by introducing unit tests focused on MIME type validation within the ImportUtils component. The approach involved using Kotlin and JUnit to ensure that only valid text or data MIME types are accepted during the import process, effectively preventing invalid file types from being processed. This update reduced the risk of crashes and data corruption, supporting greater data integrity and stability in the import pipeline. By expanding test coverage and aligning with continuous integration standards, the work enabled faster issue detection and reinforced best practices in Android development and unit testing.