{-1350244992, -23960100, "-1350244992.0239601"},
		{-1350244992, -23960108, "-1350244992.023960108"},
	}

	for _, v := range vectors {
		got := formatPAXTime(time.Unix(v.sec, v.nsec))
		if got != v.want {
			t.Errorf("formatPAXTime(%ds, %dns): got %q, want %q",
				v.sec, v.nsec, got, v.want)
		}
	}
}

func TestParsePAXRecord(t *testing.T) {
	medName := strings.Repeat("CD", 50)

		return time.Unix(secs, -1*nsecs), nil // Negative correction
	}
	return time.Unix(secs, nsecs), nil
}

// formatPAXTime converts ts into a time of the form %d.%d as described in the
// PAX specification. This function is capable of negative timestamps.
func formatPAXTime(ts time.Time) (s string) {
	secs, nsecs := ts.Unix(), ts.Nanosecond()
	if nsecs == 0 {
		return strconv.FormatInt(secs, 10)
	}

			if paxKey == paxNone {
				whyNoPAX = fmt.Sprintf("PAX cannot encode %s=%v", name, ts)
				format.mustNotBe(FormatPAX)
			} else {
				paxHdrs[paxKey] = formatPAXTime(ts)
			}
		}
		if v, ok := h.PAXRecords[paxKey]; ok && v == formatPAXTime(ts) {
			paxHdrs[paxKey] = v
		}
	}

	// Check basic fields.
	var blk block
	v7 := blk.toV7()
	ustar := blk.toUSTAR()
	gnu := blk.toGNU()