assertTrue(r[cell00+55] instanceof MissingCellDummyRecord);
assertFalse(r[cell00+56] instanceof MissingCellDummyRecord);
assertFalse(r[cell00+57] instanceof MissingCellDummyRecord);
// Check some numbers
MissingCellDummyRecord mc;
mc = (MissingCellDummyRecord)r[cell00+3];
assertEquals(1, mc.getRow());
assertEquals(1, mc.getColumn());
mc = (MissingCellDummyRecord)r[cell00+4];
assertEquals(1, mc.getRow());
assertEquals(2, mc.getColumn());
mc = (MissingCellDummyRecord)r[cell00+8];
assertEquals(2, mc.getRow());
assertEquals(1, mc.getColumn());
mc = (MissingCellDummyRecord)r[cell00+9];
assertEquals(2, mc.getRow());
assertEquals(2, mc.getColumn());
mc = (MissingCellDummyRecord)r[cell00+55];
assertEquals(22, mc.getRow());
assertEquals(10, mc.getColumn());
}