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我正在研究一个 scala 测试用例并使用 printwriter 填充一些数据。这对我来说没有任何意义 - 看起来 appender 只是在 3/4 处停止。

您不需要用于字数统计的代码，因为您可以看到文件中的最后一行不完整：

hello world duck duck sauce sauce mazing ninjakeyboard skills ninja
hello world duck duck sauce

日志：

[info] Give a file with 10 words repeated on 1000 lines and file handler 
[info] - should give us an array of 10000 words *** FAILED ***
[info]   8434 did not equal 10000 (WordCountFileHandler.scala:20)

代码：

import java.io.PrintWriter
import org.scalatest.FlatSpec
import org.scalatest.matchers.ShouldMatchers
import WordCountFileHandler.WordCountFileHandler

class WordCountFileHandler extends FlatSpec with ShouldMatchers {

  "Give a file with 10 words repeated on 1000 lines and file handler" should "give us an array of 10000 words" in {
    val filename = java.util.UUID.randomUUID().toString
    val testFile = new PrintWriter( filename , "UTF-8")
    for (x <- 1 to 1000) yield {testFile.println("hello world duck duck sauce sauce mazing ninjakeyboard skills ninja")}
    testFile.close()


    val testOutput = WordCountFileHandler (filename)
    testOutput.size should equal(1)
    //testOutput.head.foreach(println(_))
    testOutput.head.size should equal (10000)
  }
}
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1 回答 1

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看起来缓冲区没有刷新 - 我遗漏了 file.close() 并且添加它之后它可以工作！很抱歉浪费您的时间。

谢谢，

于 2013-02-11T00:34:01.560 回答