// If we were unable to read anything out of the archive don't
		// bother trying to roundtrip it.
		if len(files) == 0 {
			return
		}

		w := NewWriter(io.Discard)
		for _, f := range files {
			ww, err := w.CreateHeader(f.header)
			if err != nil {
				t.Fatalf("unable to write previously parsed header: %s", err)
			}
			if _, err := ww.Write(f.content); err != nil {
				t.Fatalf("unable to write previously parsed content: %s", err)

	}
	w := NewWriter(&buf)
	if _, err := w.CreateHeader(h); err != nil {
		t.Fatalf("unexpected CreateHeader error: %v", err)
	}
	if err := w.Close(); err != nil {
		t.Fatalf("unexpected Close error: %v", err)
	}

	want, err := os.ReadFile("testdata/time-go.zip")
	if err != nil {
		t.Fatalf("unexpected ReadFile error: %v", err)
	}

pkg archive/zip, method (*ReadCloser) Close() error
pkg archive/zip, method (*Writer) Close() error
pkg archive/zip, method (*Writer) Create(string) (io.Writer, error)
pkg archive/zip, method (*Writer) CreateHeader(*FileHeader) (io.Writer, error)
pkg archive/zip, type File struct
pkg archive/zip, type File struct, embedded FileHeader
pkg archive/zip, type FileHeader struct
pkg archive/zip, type FileHeader struct, CRC32 uint32

					commentLen -= remove
					thisRecLen -= remove
				}
				remain -= int64(thisRecLen)
				f, err := w.CreateHeader(&FileHeader{
					Name:    uint16string,
					Comment: uint16string[:commentLen],
				})
				if err != nil {
					t.Fatalf("CreateHeader: %v", err)
				}
				f.(*fileWriter).crc32 = fakeHash32{}
			}
			if err := w.Close(); err != nil {
				t.Fatalf("Close: %v", err)

// slash to the name.
// The file's contents must be written to the [io.Writer] before the next
// call to [Writer.Create], [Writer.CreateHeader], or [Writer.Close].
func (w *Writer) Create(name string) (io.Writer, error) {
	header := &FileHeader{
		Name:   name,
		Method: Deflate,
	}
	return w.CreateHeader(header)
}

// detectUTF8 reports whether s is a valid UTF-8 string, and whether the string