Getting Started with GitLab CI/CD Pipelines? (Running Test Cases through Pipeline)

Hi everyone,

This is my first post so please correct me if anything is incorrect.

I'm trying to set up a basic CI/CD pipeline with my project that's hosted in a GitLab repository. I've got a basic .yml configuration to get the pipeline started and I am able to run jobs through the pipeline but I am having trouble understanding how to execute test cases inside the project from the pipeline. I can see all of the individual test cases in the .xml documents inside my project's repository, but does anyone have insight as to how to execute test cases and suites from the pipeline configuration file?

Any help or tips on getting started would be greatly appreciated. Thank you!