assertThat(call).contains("protocol=http")
    assertThat(call.lowercase(Locale.US))
      .contains("scheme=basic") // lowercase for the RI.
  }

  @Test
  fun allAttributesSetInProxyAuthenticationCallbacks() {
    val calls = authCallsForHeader("Proxy-Authenticate: Basic realm=\"Bar\"")
    assertThat(calls.size).isEqualTo(1)
    val url = server.url("/").toUrl()
    val call = calls[0]