Worked on enhancing the wazuh-indexer repository by developing comprehensive unit tests for Bloom Filter functionality within the OpenSearch integration. Focused on verifying that FuzzySet is enabled and FuzzyFilterPostingsFormat is correctly applied when fuzzy search is active, the work improved test coverage and reduced the risk of regressions in critical code paths. Utilized Java and unit testing frameworks to implement these tests, while also addressing code hygiene through formatting, import cleanup, and updating dependencies to Lucene103Codec. Stability was further improved by adjusting Bloom Filter parameters to minimize test flakiness, ensuring future OpenSearch features can be developed with greater confidence.