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const int pageSize = 10;
var allProducts = database.Products.All(); //15 products

//products 1-10
var firstPage = allProducts.ToPagedList(0, pageSize);
Assert.Equal(10, firstPage.Count);
Assert.False(firstPage.HasPreviousPage);
Assert.True(firstPage.HasNextPage);

//products 11-15
var secondPage = allProducts.ToPagedList(1, pageSize);
Assert.Equal(5, secondPage.Count);
Assert.False(secondPage.IsFirstPage);
Assert.True(secondPage.IsLastPage);