// the connection flow-control window so new requests can proceed.
    call1.cancel()
    assertThat(
      response1.body.source().discard(1, TimeUnit.SECONDS),
      "Call should not have completed successfully.",
    ).isFalse()
    val call2 = client.newCall(Request(server.url("/")))
    val response2 = call2.execute()
    assertThat(response2.body.string()).isEqualTo("abc")
  }

    assertThat(readFileOrNull(getCleanFile("a", 0))).isEqualTo(afterRemoveFileContents)
    assertThat(readFileOrNull(getCleanFile("a", 1))).isEqualTo(afterRemoveFileContents)

    // After the edit is completed, its entry is still gone.
    a.setString(1, "a1")
    a.commit()
    assertAbsent("a")
    assertThat(cache.size()).isEqualTo(0)
  }

  @ParameterizedTest

    source: Source?,
  ) {
    val actual = source!!.buffer().readUtf8()
    assertThat(actual).isEqualTo(expected)
  }

  /**
   * Returns true when all work currently in progress by the watchdog have completed. This method
   * creates more work for the watchdog and waits for that work to be executed. When it is, we know
   * work that preceded this call is complete.
   */
  private fun awaitWatchdogIdle() {