t.Errorf("Expecting region `us-east-1` found %s", globalSite.Region())
	}

	// Set new region and verify.
	config.SetRegion(globalServerConfig, "us-west-1")
	site, err := config.LookupSite(
		globalServerConfig[config.SiteSubSys][config.Default],
		globalServerConfig[config.RegionSubSys][config.Default],
	)
	if err != nil {
		t.Fatal(err)
	}
	if site.Region() != "us-west-1" {