If the microservices are in a single repo and tested and deployed together then they are arguably no longer microservices but a "distributed monolith"!
I'm referring to having the same testing, deployment,packaging,versioning policies etc being consistently applied across projects within the same repository not deploying, testing and releasing together.
It's the drift and inconsistencies across these concerns across projects that makes deployment and operations less predictable.
It's the drift and inconsistencies across these concerns across projects that makes deployment and operations less predictable.