MockResponse.Builder()
        .body(gzippedBody)
        .addHeader("Content-Encoding: gzip")
        .build(),
    )

    // Confirm that the user request doesn't have Accept-Encoding, and the user
    // response doesn't have a Content-Encoding or Content-Length.
    val userResponse = executeSynchronously("/")
    userResponse.assertCode(200)
      .assertRequestHeader("Accept-Encoding")