assertThat(headers.parseChallenges("WWW-Authenticate"))
      .isEqualTo(listOf(Challenge("Basic", expectedAuthParams)))
  }

  @Test fun separatorsBeforeFirstChallenge() {
    val headers =
      Headers.Builder()
        .add("WWW-Authenticate", " ,  , Basic realm=myrealm")
        .build()
    assertThat(headers.parseChallenges("WWW-Authenticate"))

import okhttp3.internal.commonRequest
import okhttp3.internal.commonToString
import okhttp3.internal.commonTrailers
import okhttp3.internal.connection.Exchange
import okhttp3.internal.http.parseChallenges
import okio.Buffer

/**
 * An HTTP response. Instances of this class are not immutable: the response body is a one-shot
 * value that may be consumed only once and then closed. All other properties are immutable.
 *