public void AddDaysTest()
{
Assert.Equal(DayOfWeek.Monday, TimeTool.AddDays(DayOfWeek.Sunday, 1));
Assert.Equal(DayOfWeek.Tuesday, TimeTool.AddDays(DayOfWeek.Monday, 1));
Assert.Equal(DayOfWeek.Wednesday, TimeTool.AddDays(DayOfWeek.Tuesday, 1));
Assert.Equal(DayOfWeek.Thursday, TimeTool.AddDays(DayOfWeek.Wednesday, 1));
Assert.Equal(DayOfWeek.Friday, TimeTool.AddDays(DayOfWeek.Thursday, 1));
Assert.Equal(DayOfWeek.Saturday, TimeTool.AddDays(DayOfWeek.Friday, 1));
Assert.Equal(DayOfWeek.Sunday, TimeTool.AddDays(DayOfWeek.Saturday, 1));
Assert.Equal(DayOfWeek.Sunday, TimeTool.AddDays(DayOfWeek.Monday, -1));
Assert.Equal(DayOfWeek.Monday, TimeTool.AddDays(DayOfWeek.Tuesday, -1));
Assert.Equal(DayOfWeek.Tuesday, TimeTool.AddDays(DayOfWeek.Wednesday, -1));
Assert.Equal(DayOfWeek.Wednesday, TimeTool.AddDays(DayOfWeek.Thursday, -1));
Assert.Equal(DayOfWeek.Thursday, TimeTool.AddDays(DayOfWeek.Friday, -1));
Assert.Equal(DayOfWeek.Friday, TimeTool.AddDays(DayOfWeek.Saturday, -1));
Assert.Equal(DayOfWeek.Saturday, TimeTool.AddDays(DayOfWeek.Sunday, -1));
Assert.Equal(DayOfWeek.Sunday, TimeTool.AddDays(DayOfWeek.Sunday, 14));
Assert.Equal(DayOfWeek.Monday, TimeTool.AddDays(DayOfWeek.Monday, 14));
Assert.Equal(DayOfWeek.Tuesday, TimeTool.AddDays(DayOfWeek.Tuesday, 14));
Assert.Equal(DayOfWeek.Wednesday, TimeTool.AddDays(DayOfWeek.Wednesday, 14));
Assert.Equal(DayOfWeek.Thursday, TimeTool.AddDays(DayOfWeek.Thursday, 14));
Assert.Equal(DayOfWeek.Friday, TimeTool.AddDays(DayOfWeek.Friday, 14));
Assert.Equal(DayOfWeek.Saturday, TimeTool.AddDays(DayOfWeek.Saturday, 14));
Assert.Equal(DayOfWeek.Sunday, TimeTool.AddDays(DayOfWeek.Sunday, -14));
Assert.Equal(DayOfWeek.Monday, TimeTool.AddDays(DayOfWeek.Monday, -14));
Assert.Equal(DayOfWeek.Tuesday, TimeTool.AddDays(DayOfWeek.Tuesday, -14));
Assert.Equal(DayOfWeek.Wednesday, TimeTool.AddDays(DayOfWeek.Wednesday, -14));
Assert.Equal(DayOfWeek.Thursday, TimeTool.AddDays(DayOfWeek.Thursday, -14));
Assert.Equal(DayOfWeek.Friday, TimeTool.AddDays(DayOfWeek.Friday, -14));
Assert.Equal(DayOfWeek.Saturday, TimeTool.AddDays(DayOfWeek.Saturday, -14));
} // AddDaysTest