}

    @Test
    public void test_getUserAgentType_IE9() {
        getMockRequest().addHeader("user-agent", "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.0; Trident/5.0)");
        assertEquals(UserAgentType.IE, userAgentHelper.getUserAgentType());
    }

    @Test
    public void test_getUserAgentType_IE10() {
        getMockRequest().addHeader("user-agent", "Mozilla/5.0 (compatible; MSIE 10.0; Windows NT 6.2; Trident/6.0)");

      MockResponse
        .Builder()
        .addHeader("Last-Modified: " + formatDate(-1, TimeUnit.HOURS))
        .addHeader("Expires: " + formatDate(1, TimeUnit.HOURS))
        .code(responseCode)
        .body("ABCDE")
        .addHeader("WWW-Authenticate: challenge")
    when (responseCode) {
      HttpURLConnection.HTTP_PROXY_AUTH -> {
        builder.addHeader("Proxy-Authenticate: Basic realm=\"protected area\"")
      }

  /** A collection of headers that collectively exceed the limits. */
  @Test
  fun largeResponseHeadersList() {
    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("Set-Cookie", "a=${"A".repeat(255 * 1024)}")
        .addHeader("Set-Cookie", "b=${"B".repeat(1 * 1024)}")
        .body("I'm not even supposed to be here today.")
        .build(),
    )
    val call = client.newCall(Request(url = server.url("/")))

        originalRequest
          .newBuilder()
          .method("POST", uppercase(originalRequest.body))
          .addHeader("OkHttp-Intercepted", "yep")
          .build(),
      )
    }
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .addHeader("Original-Header", "foo")
        .method("PUT", "abc".toRequestBody("text/plain".toMediaType()))
        .build()

      MockResponse()
        .clearHeaders()
        .addHeader("Cookie: s=square")
        .addHeader("Cookie", "a=android")
    assertThat(headersToList(response))
      .containsExactly("Cookie: s=square", "Cookie: a=android")
  }

  @Test
  fun mockResponseSetHeader() {
    val response =
      MockResponse()
        .clearHeaders()
        .addHeader("Cookie: s=square")
        .addHeader("Cookie: a=android")

  }

  private fun trailersAndCache(protocol: Protocol) {
    enableProtocol(protocol)

    server.enqueue(
      MockResponse
        .Builder()
        .addHeader("h1", "v1")
        .addHeader("Cache-Control: max-age=30")
        .body(protocol, "Hello")
        .trailers(headersOf("t1", "v2"))
        .build(),
    )

    val call1 = client.newCall(Request(server.url("/")))

        .Builder()
        .clearHeaders()
        .addHeader("Cookie: s=square")
        .addHeader("Cookie", "a=android")
    assertThat(headersToList(builder)).containsExactly("Cookie: s=square", "Cookie: a=android")
  }

  @Test
  fun mockResponseSetHeader() {
    val builder =
      MockResponse
        .Builder()
        .clearHeaders()
        .addHeader("Cookie: s=square")
        .addHeader("Cookie: a=android")

    Request request = new Request.Builder()
        .url("https://api.github.com/repos/square/okhttp/issues")
        .header("User-Agent", "OkHttp Headers.java")
        .addHeader("Accept", "application/json; q=0.5")
        .addHeader("Accept", "application/vnd.github.v3+json")
        .build();

    try (Response response = client.newCall(request).execute()) {

    return apply { status = "HTTP/1.1 $code $reason" }
  }

  fun clearHeaders() =
    apply {
      headersBuilder = Headers.Builder()
    }

  fun addHeader(header: String) =
    apply {
      headersBuilder.add(header)
    }

  fun addHeader(
    name: String,
    value: Any,
  ) = apply {
    headersBuilder.add(name, value.toString())
  }

  fun addHeaderLenient(
    name: String,

    } catch (FileNotFoundException e) {
      return new MockResponse()
          .setStatus("HTTP/1.1 404")
          .addHeader("content-type: text/plain; charset=utf-8")
          .setBody("NOT FOUND: " + path);
    } catch (IOException e) {
      return new MockResponse()
          .setStatus("HTTP/1.1 500")
          .addHeader("content-type: text/plain; charset=utf-8")
          .setBody("SERVER ERROR: " + e);
    }
  }