public void CanPaginate(int firstPage, int secondPage)
{
// Arrange
Mock <IRepository <Cat> > mock = new Mock <IRepository <Cat> >();
mock.Setup(m => m.All()).Returns(new List <Cat> {
new Cat {
Id = 1, Name = "C1"
},
new Cat {
Id = 2, Name = "C2"
},
new Cat {
Id = 3, Name = "C3"
},
new Cat {
Id = 4, Name = "C4"
},
new Cat {
Id = 5, Name = "C5"
}
}.AsQueryable());
HomeController controller = new HomeController(mock.Object);
// Act
CatListViewModel firstPageResult = (CatListViewModel)controller.Index(firstPage).ViewData.Model;
CatListViewModel secondPageResult = (CatListViewModel)controller.Index(secondPage).ViewData.Model;
// Assert
CatModel[] firstPageCats = firstPageResult.Cats.ToArray();
Assert.True(firstPageCats.Length == 3);
Assert.Equal("C1", firstPageCats[0].Name);
Assert.Equal("C2", firstPageCats[1].Name);
Assert.Equal("C3", firstPageCats[2].Name);
CatModel[] secondPageCats = secondPageResult.Cats.ToArray();
Assert.True(secondPageCats.Length == 2);
Assert.Equal("C4", secondPageCats[0].Name);
Assert.Equal("C5", secondPageCats[1].Name);
}
public ViewResult Index(int page = 1)
{
var result = new CatListViewModel()
{
Cats = this.cats
.All()
.Select(c => new CatModel()
{
Id = c.Id, Name = c.Name
})
.Skip((page - 1) * ItemsPerPage)
.Take(ItemsPerPage),
PagingInfo = new PagingInfo()
{
CurrentPage = page,
ItemsPerPage = ItemsPerPage,
TotalItems = cats.All().Count()
}
};
return(View(result));
}
