private void confirm(String formulaText, double expectedResult) {
cell11.setCellFormula(formulaText);
evaluator.clearAllCachedResultValues();
CellValue cv = evaluator.evaluate(cell11);
if (cv.getCellType() != Cell.CELL_TYPE_NUMERIC) {
throw new AssertionFailedError("Wrong result type: " + cv.formatAsString());
}
double actualValue = cv.getNumberValue();
assertEquals(expectedResult, actualValue, 0);
}
}