def METHOD_NAME(self):
    """Read Picard CalculateHsMetrics PER_TARGET_COVERAGE format."""
    fname = "picard/p2-5_5.antitargetcoverage.csv"
    cna = tabio.read(fname, "picardhs")
    self.assertEqual(len(cna), linecount(fname) - 1)
    self.assertEqual(cna.sample_id, "p2-5_5")