mesh := fuzz.Struct[*meshconfig.MeshConfig](fg)
		c := fuzz.Struct[*cluster.Cluster](fg)

		serviceDiscovery := memory.NewServiceDiscovery()
		env := newTestEnvironment(serviceDiscovery, mesh, buildEnvoyFilterConfigStore(patches))
		push := model.NewPushContext()
		push.InitContext(env, nil, nil)
		efw := push.EnvoyFilters(proxy)
		ApplyClusterMerge(networking.EnvoyFilter_GATEWAY, efw, c, []host.Name{host.Name(hostname)})
	})

			wantExtensionConfig: []*core.TypedExtensionConfig{},
		},
	}

	serviceDiscovery := memory.NewServiceDiscovery()
	env := newTestEnvironment(serviceDiscovery, testMesh, buildEnvoyFilterConfigStore(configPatches))
	push := model.NewPushContext()
	push.InitContext(env, nil, nil)

	for _, c := range testCases {
		t.Run(c.name, func(t *testing.T) {

					},
				},
			},
			{
				Name: "new-vhost",
			},
		},
	}

	serviceDiscovery := memory.NewServiceDiscovery()
	env := newTestEnvironment(serviceDiscovery, testMesh, buildEnvoyFilterConfigStore(configPatches))
	push := model.NewPushContext()
	push.InitContext(env, nil, nil)

	sidecarNode := &model.Proxy{Type: model.SidecarProxy, ConfigNamespace: "not-default"}

			output:       gatewayOutput,
		},
	}

	serviceDiscovery := memory.NewServiceDiscovery()
	env := newTestEnvironment(serviceDiscovery, testMesh, buildEnvoyFilterConfigStore(configPatches))
	push := model.NewPushContext()
	push.InitContext(env, nil, nil)
	for _, tc := range testCases {
		t.Run(tc.name, func(t *testing.T) {
			efw := push.EnvoyFilters(tc.proxy)

	"istio.io/istio/pkg/wellknown"
)

var testMesh = &meshconfig.MeshConfig{
	ConnectTimeout: &durationpb.Duration{
		Seconds: 10,
		Nanos:   1,
	},
}

func buildEnvoyFilterConfigStore(configPatches []*networking.EnvoyFilter_EnvoyConfigObjectPatch) model.ConfigStore {
	store := memory.Make(collections.Pilot)

	for i, cp := range configPatches {
		_, err := store.Create(config.Config{