public void FirstDateOfWeekIso8601_04()
        {
            // Arrange
            var year = 2006;
            var week = 52;

            // Act
            var actual = DateTimeUtilities.FirstDateOfWeekIso8601(year, week);

            // Assert
            var expected = new DateTime(2006, 12, 25);

            Assert.AreEqual(expected, actual);
        }
        public void FirstDateOfWeekIso8601_01()
        {
            // Arrange
            var year = 2005;
            var week = 1;

            // Act
            var actual = DateTimeUtilities.FirstDateOfWeekIso8601(year, week);

            // Assert
            var expected = new DateTime(2005, 01, 03);

            Assert.Equal(expected, actual);
        }