},
			services:  []*Service{serviceA8000},
			expected:  []*Service{serviceA8000},
			namespace: "a",
		},
		{
			name: "fall back to wildcard namespace",
			listenerHosts: map[string]hostClassification{
				wildcardNamespace: {allHosts: []host.Name{"host"}, exactHosts: sets.New[host.Name]("host")},

		ns := svc.Attributes.Namespace
		if _, exists := hostsByNamespace[ns]; !exists {
			hostsByNamespace[ns] = hostClassification{exactHosts: sets.New[host.Name](), allHosts: make([]host.Name, 0)}
		}

		hc := hostsByNamespace[ns]
		hc.allHosts = append(hc.allHosts, svc.Hostname)
		hostsByNamespace[ns] = hc

		if !svc.Hostname.IsWildCarded() {
			hostsByNamespace[ns].exactHosts.Insert(svc.Hostname)
		}
	}