public void Visible_Should_Throw_ArgumentNullException_If_Categories_Is_Null()
{
IQueryable<Category> categories = null;
var ex = Assert.Throws<ArgumentNullException>(() => CategoryExtensions.Visible(categories));
Assert.Equal(nameof(categories), ex.ParamName);
}
public void Visible_Should_Return_Only_Categories_Where_Today_Date_Is_Between_VisibleFrom_And_VisibleTo()
{
var c1 = Category.Create("c1", "c1", "c1");
var c2 = Category.Create("c2", "c2", "c2");
var c3 = Category.Create("c3", "c3", "c3");
var today = DateTime.Today;
c1.SetAsVisible();
c2.SetAsVisible(today, today.AddDays(2));
IQueryable<Category> categories = new Category[]
{
c1, c2, c3
}.AsQueryable();
var visibleCategories = CategoryExtensions.Visible(categories);
var now = DateTime.Now;
Assert.Equal(2, visibleCategories.Count());
Assert.True(visibleCategories.All(c => c.IsVisible && c.VisibleFrom <= now && (!c.VisibleTo.HasValue || c.VisibleTo >= now)));
}
