@Test fun equalsAndHashcode() {
    val a = factory.newAddress()
    val b = factory.newAddress()
    assertThat(b).isEqualTo(a)
    assertThat(b.hashCode()).isEqualTo(a.hashCode())
  }

  @Test fun differentProxySelectorsAreDifferent() {
    val a = factory.newAddress(proxySelector = RecordingProxySelector())
    val b = factory.newAddress(proxySelector = RecordingProxySelector())
    assertThat(b).isNotEqualTo(a)
  }