Should I TEST for endometriosis?

My husband and I have been trying to conceive for 2 1/2 years now. We've done all the fertility testing and the doctors have told us that we have unexplained infertility. I've already had an HSG TEST and my fallopian tubes are open. My doc suggested I have an endometriosis test but I have no symptoms and am told that it's a surgery. I really don't want to waste my money or go under the knife. Should I take the test? Is it worth it to find out?