final Date rd1 = testCases[i].refStart;
final Date rd2 = testCases[i].refEnd;
QL.info(testCases[i].toString());
/*@Time*/ final double calculated = dayCounter.yearFraction(d1, d2, rd1, rd2);
if (abs(calculated-testCases[i].result) > 1.0e-10) {
final String period = "period: " + d1 + " to " + d2;
String refPeriod = "";
if (testCases[i].convention == ActualActual.Convention.ISMA) {