# Associating Code With Tests SeaLights intelligently maps tests to their corresponding code sections, enabling efficient test selection. Here are the three primary methods employed: ### **Statistical Modeling** * Leverages **machine learning** to analyze each test's impact on code during parallel testing. * Gradually refines code-to-test mapping for **increasing accuracy and efficiency** over time. ### **One-to-One Mapping (with OpenTelemetry)** * Uses **OpenTelemetry instrumentation** to capture data on every application operation. * Precisely maps tests to code methods based on **comprehensive request tracking** throughout your system. ### **Calibration (with Sequential Testing)** * Employs **sequential testing** to simulate one-to-one mapping results. * Offers **immediate and accurate mapping** but can be time-consuming compared to other methods. *** {% content-ref url="associating-code-with-tests/statistical-modeling" %} [statistical-modeling](https://docs.sealights.io/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/statistical-modeling) {% endcontent-ref %} {% content-ref url="associating-code-with-tests/one-to-one-mapping" %} [one-to-one-mapping](https://docs.sealights.io/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/one-to-one-mapping) {% endcontent-ref %} {% content-ref url="associating-code-with-tests/calibration" %} [calibration](https://docs.sealights.io/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/calibration) {% endcontent-ref %} {% file src="" %}