var fakeClient *fakes.FakeClient

			BeforeEach(func() {
				fakeClient = newFakeClient("udp", "host:port")
				clientFactory = func(_ *steno.Logger, _ string) (loggregatorclient.Client, error) {
					return fakeClient, nil
				}
			})

			It("the client is stopped", func() {
				s := map[string]string{
					"a": "udp://host:port",
				}

				pool.Set(s, nil)
				Expect(fakeClient.StopCallCount()).To(Equal(0))
				pool.Set(nil, nil)
				Expect(fakeClient.StopCallCount()).To(Equal(1))
			})
		})

		Context("with identical server data", func() {
			var clientFactoryCallCount int

			BeforeEach(func() {
				clientFactoryCallCount = 0
				clientFactory = func(logger *steno.Logger, url string) (loggregatorclient.Client, error) {
					clientFactoryCallCount++
					return fakeClientFactory(logger, url)
				}
			})