@Test(enabled = true)
  public void testForceReadgroup() {
    final RecalibrationArgumentCollection forcedRAC = new RecalibrationArgumentCollection();
    forcedRAC.FORCE_READGROUP = "FOO";
    final ReadGroupCovariate forcedCovariate = new ReadGroupCovariate();
    forcedCovariate.initialize(forcedRAC);

    final GATKSAMReadGroupRecord rg = new GATKSAMReadGroupRecord("NOT_FOO");
    runTest(rg, "FOO", forcedCovariate);
  }
 @BeforeClass
 public void init() {
   RAC = new RecalibrationArgumentCollection();
   covariate = new ReadGroupCovariate();
   covariate.initialize(RAC);
 }