public void rowAmount_happy_pass()
{
//arrange
RowAmount rowAmount = new RowAmount();
int n = 3;
int expected = 9;
//act
int actual = rowAmount.GetSummOfFactorials(n);
//assert
Assert.AreEqual(expected, actual, $"summ of factorials is not correct");
}
public void rowAmount_for_1_should_return_correct_value()
{
//arrange
RowAmount rowAmount = new RowAmount();
int n = 1;
int expected = 19;
//act
int actual = rowAmount.GetSummOfFactorials(n);
//assert
Assert.AreEqual(expected, actual, $"summ of factorials is not correct");
}