public void WhereClauseTest()
{
int[] numbers = { 5, 4, 1, 3, 9, 8, 6, 7, 2, 0 };
var queryLowNum2 =
from num in numbers
where num < 5 && num % 2 == 0
select num;
Assert.AreEqual(3, queryLowNum2.Count(), "0, 2, 4 이렇게 3개");
var queryHighEvenNums =
from num in numbers
where num > 5 && IsEven(num)
select num;
Assert.AreEqual(2, queryHighEvenNums.Count(), "6, 8 이렇게 2개");
}