Update 02-cardano-node-course.mdx

docs/07-development-guidelines/02-cardano-node-course.mdx

@@ -36,3 +36,10 @@ The IOG Academy provides this course on YouTube. See the accompanying [handbook
 | [Creating a stake pool on the local cluster](https://www.youtube.com/watch?v=0svni-Dy4zM&list=PLNEK_Ejlx3x2ut-Pq-hi0NFVsgKB3EddR&index=25&pp=iAQB) | Video 26. Creating a local cluster; providing funds, keys, and configuration files for a new stake pool. |  
 | [Bringing the d parameter down](https://www.youtube.com/watch?v=LNUzmhdGPbY&list=PLNEK_Ejlx3x2ut-Pq-hi0NFVsgKB3EddR&index=26&pp=iAQB) | Video 27. Creating a local cluster; submitting a proposal to bring the decentralization parameter (d) down from 1 to 0.80. |  
 | [From Shelley to Alonzo](https://www.youtube.com/watch?v=mFyutul_5mU&list=PLNEK_Ejlx3x2ut-Pq-hi0NFVsgKB3EddR&index=27&pp=iAQB) | Video 28. Creating a local cluster; moving our local cluster from the Shelley era to Alonzo. |  
+
+## Cardano node tests
+
+Node tests are CLI-based system and end-to-end tests for the Cardano node. Node tests are open source for Cardano node users running the CLI, SPOs, third-party tool developers, and others to test Cardano functionality from the end-user perspective.
+
+You can access [**Cardano node tests documentation here**](https://tests.cardano.intersectmbo.org/). 
+