// will implicitly flush out the file's padding.
func (tw *Writer) Flush() error {
	if tw.err != nil {
		return tw.err
	}
	if nb := tw.curr.logicalRemaining(); nb > 0 {
		return fmt.Errorf("archive/tar: missed writing %d bytes", nb)
	}
	if _, tw.err = tw.w.Write(zeroBlock[:tw.pad]); tw.err != nil {
		return tw.err
	}
	tw.pad = 0
	return nil
}

	t.Run("NegativeSize", func(t *testing.T) {
		tw := NewWriter(new(bytes.Buffer))
		hdr := &Header{Name: "small.txt", Size: -1}
		if err := tw.WriteHeader(hdr); err == nil {
			t.Fatalf("WriteHeader() = nil, want non-nil error")
		}
	})

	t.Run("BeforeHeader", func(t *testing.T) {
		tw := NewWriter(new(bytes.Buffer))
		if _, err := tw.Write([]byte("Kilts")); err != ErrWriteTooLong {

	for _, file := range files {
		hdr := &tar.Header{
			Name: file.Name,
			Mode: 0600,
			Size: int64(len(file.Body)),
		}
		if err := tw.WriteHeader(hdr); err != nil {
			log.Fatal(err)
		}
		if _, err := tw.Write([]byte(file.Body)); err != nil {
			log.Fatal(err)
		}
	}
	if err := tw.Close(); err != nil {
		log.Fatal(err)
	}

	// Open and iterate through the files in the archive.
	tr := tar.NewReader(&buf)
	for {

	}
	if _, err := tw.Write(data); err != nil {
		t.Fatalf("tw.Write: %v", err)
	}
	if err := tw.Close(); err != nil {
		t.Fatalf("tw.Close: %v", err)
	}

	// Read it back.
	tr := NewReader(&b)
	rHdr, err := tr.Next()
	if err != nil {
		t.Fatalf("tr.Next: %v", err)
	}
	if !reflect.DeepEqual(rHdr, hdr) {
		t.Errorf("Header mismatch.\n got %+v\nwant %+v", rHdr, hdr)
	}
	rData, err := io.ReadAll(tr)

		return cfg, err
	}

	tw, err := strconv.Atoi(env.Get(EnvILMTransitionWorkers, kvs.GetWithDefault(transitionWorkers, DefaultKVS)))
	if err != nil {
		return cfg, err
	}

	ew, err := strconv.Atoi(env.Get(EnvILMExpirationWorkers, kvs.GetWithDefault(expirationWorkers, DefaultKVS)))
	if err != nil {
		return cfg, err
	}

	cfg.TransitionWorkers = tw
	cfg.ExpirationWorkers = ew
	return cfg, nil

          "mapping": {
            "type": "text",
            "analyzer": "simplified_chinese_analyzer"
          }
        }
      },
      {
        "lang_zh-tw": {
          "match": "*_zh-tw",
          "mapping": {
            "type": "text",
            "analyzer": "empty_analyzer"
          }
        }
      }
    ],
    "properties": {
      "anchor": {

          "keywords_path": "${fess.dictionary.path}th/protwords.txt"
        },
        "traditional_chinese_stop": {
          "type":       "stop",
          "stopwords_path": "${fess.dictionary.path}zh-tw/stopwords.txt"
        },
        "turkish_stop": {
          "type":       "stop",
          "stopwords_path": "${fess.dictionary.path}tr/stopwords.txt"
        },
        "turkish_lowercase": {

          "mapping": {
            "type": "text",
            "analyzer": "simplified_chinese_analyzer"
          }
        }
      },
      {
        "lang_zh-tw": {
          "match": "*_zh-tw",
          "mapping": {
            "type": "text",
            "analyzer": "traditional_chinese_analyzer"
          }
        }
      }
    ],
    "properties": {
      "anchor": {

          "mapping": {
            "type": "text",
            "analyzer": "simplified_chinese_analyzer"
          }
        }
      },
      {
        "lang_zh-tw": {
          "match": "*_zh-tw",
          "mapping": {
            "type": "text",
            "analyzer": "empty_analyzer"
          }
        }
      }
    ],
    "properties": {
      "anchor": {

	const BufSize = 8
	{
		tw := &teststringwriter{}
		b := NewWriterSize(tw, BufSize)
		b.WriteString("1234")
		tw.check(t, "", "")
		b.WriteString("56789012")   // longer than BufSize
		tw.check(t, "12345678", "") // but not enough (after filling the partially-filled buffer)
		b.Flush()
		tw.check(t, "123456789012", "")
	}
	{
		tw := &teststringwriter{}
		b := NewWriterSize(tw, BufSize)