.dataset(EXPENSE_REPORTS)
.group(COLUMN_DATE).fixed(DAY_OF_WEEK, true).firstDay(DayOfWeek.MONDAY)
.column(COLUMN_DATE, "Period")
.column(COUNT, "Occurrences")
.column(COLUMN_AMOUNT, SUM, "totalAmount")
<BUG>.buildLookup().cloneInstance());
assertDataSetValues(result, dataSetFormatter, new String[][]{</BUG>
{"2", "10.00", "3,904.17"},
{"3", "8.00", "4,525.69"},
{"4", "7.00", "4,303.14"},

.dataset(EXPENSE_REPORTS)
.group(COLUMN_DATE).fixed(DAY_OF_WEEK, true).firstDay(DayOfWeek.MONDAY)
.column(COLUMN_DATE, "Period")
.column(COUNT, "Occurrences")
.column(COLUMN_AMOUNT, SUM, "totalAmount")
.buildLookup());
assertDataSetValues(result, dataSetFormatter, new String[][]{
{"2", "10.00", "3,904.17"},
{"3", "8.00", "4,525.69"},
{"4", "7.00", "4,303.14"},
