.isEqualTo("<< 0x00000000    15 SETTINGS      ")
    assertThat(frameLog(false, 0, 0, TYPE_SETTINGS, FLAG_ACK))
      .isEqualTo(">> 0x00000000     0 SETTINGS      ACK")
    assertThat(frameLog(true, 0, 0, TYPE_SETTINGS, FLAG_ACK))
      .isEqualTo("<< 0x00000000     0 SETTINGS      ACK")
    assertThat(frameLog(true, 3, 22, TYPE_HEADERS, FLAG_END_HEADERS))
      .isEqualTo("<< 0x00000003    22 HEADERS       END_HEADERS")

    assertThat(nullsArePassed.reverse().convert("foo")).isEqualTo("backward");
    assertThat(nullsArePassed.reverse().convert(null)).isEqualTo("backward");
  }

  public void testNullIsNotPassedThrough() {
    Converter<String, String> nullsAreHandled = sillyConverter(true);
    assertThat(nullsAreHandled.convert("foo")).isEqualTo("forward");
    assertThat(nullsAreHandled.convert(null)).isNull();

  public void testToString() {
    assertThat(Types.toString(int[].class)).isEqualTo(int[].class.getName());
    assertThat(Types.toString(int[][].class)).isEqualTo(int[][].class.getName());
    assertThat(Types.toString(String[].class)).isEqualTo(String[].class.getName());
    Type elementType = List.class.getTypeParameters()[0];
    assertThat(Types.toString(elementType)).isEqualTo(elementType.toString());
  }

  public void testNullPointers() {

    assertThat(headers.type).isEqualTo(Http2.TYPE_HEADERS)
    val data1 = peer.takeFrame()
    assertThat(data1.type).isEqualTo(Http2.TYPE_DATA)
    assertThat(data1.streamId).isEqualTo(3)
    assertArrayEquals("abcde".toByteArray(), data1.data)
    val data2 = peer.takeFrame()
    assertThat(data2.type).isEqualTo(Http2.TYPE_DATA)
    assertThat(data2.streamId).isEqualTo(3)

    assertThat("ς".map()).isEqualTo("ς")
    assertThat("\u200c".map()).isEqualTo("\u200c")
    assertThat("\u200d".map()).isEqualTo("\u200d")
  }

  @Test fun ignored() {
    assertThat("\u200b".map()).isEqualTo("")
    assertThat("\ufeff".map()).isEqualTo("")
  }

  @Test fun disallowed() {
    assertThat("\u0080".mapExpectingErrors()).isEqualTo("\u0080")
  }

    assertThat(headers.getDate("testDate")).isEqualTo(Date(0L))
  }

  @Test fun addInstant() {
    val expected = Instant.ofEpochMilli(0L)
    val headers =
      Headers
        .Builder()
        .add("Test-Instant", expected)
        .build()
    assertThat(headers["Test-Instant"]).isEqualTo("Thu, 01 Jan 1970 00:00:00 GMT")
    assertThat(headers.getInstant("Test-Instant")).isEqualTo(expected)

    assertUnicodeEscaping(e, "%F4%8F%BF%BF", '\uDBFF', '\uDFFF');

    // simple string tests
    assertThat(e.escape("")).isEqualTo("");
    assertThat(e.escape("safestring")).isEqualTo("safestring");
    assertThat(e.escape("embedded\0null")).isEqualTo("embedded%00null");
    assertThat(e.escape("max\uffffchar")).isEqualTo("max%EF%BF%BFchar");
  }

  /** Tests the various ways that the space character can be handled */

    assertThat(graph.nodes()).isEqualTo(asGraph.nodes());
    assertThat(graph.edges()).isEqualTo(asGraph.edges());
    assertThat(graph.nodeOrder()).isEqualTo(asGraph.nodeOrder());
    assertThat(graph.incidentEdgeOrder()).isEqualTo(asGraph.incidentEdgeOrder());
    assertThat(graph.isDirected()).isEqualTo(asGraph.isDirected());
    assertThat(graph.allowsSelfLoops()).isEqualTo(asGraph.allowsSelfLoops());

    assertThat(call2Get.url.encodedPath).isEqualTo("/call2")
    assertThat(call2Get.exchangeIndex).isEqualTo(0)
    val call1Get = server.takeRequest()
    assertThat(call1Get.method).isEqualTo("GET")
    assertThat(call1Get.url.encodedPath).isEqualTo("/call1")
    assertThat(call1Get.exchangeIndex).isEqualTo(1)
    assertThat(client.connectionPool.connectionCount()).isEqualTo(1)
  }

    assertThat(recordedRequest.url.host).isEqualTo("2607:f8b0:400b:804::200e")
    assertThat(recordedRequest.handshakeServerNames).isEmpty()
  }

  /** No SNI for literal IPv4 addresses. */
  @Test
  fun ipv4() {
    val recordedRequest = requestToHostnameViaProxy("76.223.91.57")
    assertThat(recordedRequest.url.host).isEqualTo("76.223.91.57")
    assertThat(recordedRequest.handshakeServerNames).isEmpty()