for _, tt := range daysInTests {
		di := DaysIn(Month(tt.month), tt.year)
		if di != tt.di {
			t.Errorf("got %d; expected %d for %d-%02d",
				di, tt.di, tt.year, tt.month)
		}
	}
}

func TestAddToExactSecond(t *testing.T) {
	// Add an amount to the current time to round it up to the next exact second.
	// This test checks that the nsec field still lies within the range [0, 999999999].
	t1 := Now()