How do I download TestNG for IntelliJ?
Go to the tab for dependencies. To add a new dependency, select “JARs or folders” from the “+” menu. To add a new dependency, select “JARs or folders” from the “+” menu. Enter the path to the jar file you downloaded or navigate straight through the GUI, then click Okay. In the returning panel, select Okay, and your TestNG will be installed in IntelliJ.