Headers
        .Builder()
        .add("A", "a")
        .add("B", "bb")
        .build()
    assertThat(headers.toString()).isEqualTo("A: a\nB: bb\n")
  }

  @Test fun headersToStringRedactsSensitiveHeaders() {
    val headers =
      Headers
        .Builder()
        .add("content-length", "99")
        .add("authorization", "peanutbutter")
        .add("proxy-authorization", "chocolate")