override fun intercept(chain: Chain): Response {
    return uppercaseResponse(chain.proceed(chain.request()))
  }

  private fun uppercaseResponse(response: Response): Response {
    val uppercaseBody: ResponseBody =
      object : ForwardingResponseBody(response.body) {
        override fun source(): BufferedSource {
          return uppercaseSource(delegate().source()).buffer()
        }
      }
    return response.newBuilder()

import java.io.IOException
import java.net.ProtocolException
import java.net.SocketException
import okhttp3.EventListener
import okhttp3.Headers
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody
import okhttp3.internal.http.ExchangeCodec
import okhttp3.internal.http.RealResponseBody
import okhttp3.internal.ws.RealWebSocket
import okio.Buffer
import okio.ForwardingSink
import okio.ForwardingSource

          .post("Uncompressed".toRequestBody().gzip())
          .build(),
      ).execute()
    val responseBody = response.body
    assertThat(responseBody.string(), "Expected response body to be valid")
      .isEqualTo("Uncompressed")
    responseBody.close()
    networkLogs
      .assertLogEqual("--> POST $url http/1.1")
      .assertLogEqual("Content-Encoding: gzip")

  /**
   * Invokes the request immediately, and blocks until the response can be processed or is in error.
   *
   * To avoid leaking resources callers should close the [Response] which in turn will close the
   * underlying [ResponseBody].
   *
   * ```java
   * // ensure the response (and underlying response body) is closed
   * try (Response response = client.newCall(request).execute()) {
   *   ...
   * }
   * ```
   *

 *
 */
package mockwebserver3

import java.io.IOException
import okhttp3.ExperimentalOkHttpApi
import okio.BufferedSink

/**
 * The body of a [MockResponse].
 *
 * Unlike [okhttp3.ResponseBody], this interface is designed to be implemented by writers and not
 * called by readers.
 */
@ExperimentalOkHttpApi
interface MockResponseBody {
  /** The length of this response in bytes, or -1 if unknown. */

import assertk.assertions.isNotNull
import assertk.assertions.matches
import assertk.assertions.message
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.brotli.internal.uncompress
import okio.Buffer
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.decodeHex
import okio.IOException

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.brotli.internal

import okhttp3.Response
import okhttp3.ResponseBody.Companion.asResponseBody
import okhttp3.internal.http.promisesBody
import okio.GzipSource
import okio.buffer
import okio.source
import org.brotli.dec.BrotliInputStream

 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okhttp3.Headers
import okhttp3.RequestBody
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.ResponseBody
import okhttp3.ResponseBody.Companion.toResponseBody
import okio.ArrayIndexOutOfBoundsException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeHex

      Response.Builder()
        .request(Request("https://example.com/".toHttpUrl()))
        .protocol(Protocol.HTTP_1_1)
        .message("OK")
        .code(200)
        .body(
          object : ResponseBody() {
            override fun contentType() = null

            override fun contentLength() = -1L

            override fun source() =
              object : ForwardingSource(Buffer()) {

import java.io.IOException
import kotlin.test.assertFailsWith
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.Protocol
import okhttp3.Request
import okhttp3.Response
import okhttp3.ResponseBody.Companion.toResponseBody
import okhttp3.brotli.internal.uncompress
import okio.ByteString
import okio.ByteString.Companion.EMPTY
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8