executeSynchronously("/")
      .assertHeader("a\tb", "c\u007fd")
      .assertHeader("\ud83c\udf69", "\u2615\ufe0f")
      .assertHeader("", "ef")
  }

  @Test
  fun customDns() {
    // Configure a DNS that returns our local MockWebServer for android.com.
    val dns = FakeDns()
    dns["android.com"] = Dns.SYSTEM.lookup(server.url("/").host)
    client =
      client

            }
        };

        assertTrue(customEnv.is("bool.true"));
        assertFalse(customEnv.is("bool.false"));
        assertTrue(customEnv.is("bool.yes"));
        assertFalse(customEnv.is("bool.no"));
        assertTrue(customEnv.is("bool.on"));
        assertFalse(customEnv.is("bool.off"));
        assertTrue(customEnv.is("bool.1"));
        assertFalse(customEnv.is("bool.0"));
    }