public void PagedAccessToCollection_CollectionChunkedToPages()
{
int totalCount;
var superset = GetTestData(0, int.MaxValue, out totalCount);
var mutablePagedList = new MutablePagedList <int>(superset, 1, 5);
Assert.True(mutablePagedList.TotalItemCount == 0);
Assert.True(mutablePagedList.PageCount == 0);
//force loading 1 page
mutablePagedList.ToArray();
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 1);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 0);
Assert.True(mutablePagedList.Last() == 4);
//Change mutable list pageNumber to 2
mutablePagedList.Slice(2, 5);
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 2);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 5);
Assert.True(mutablePagedList.Last() == 9);
}
public void DelayLoadingPagedData_DataLoadedByMultiplePagedRequest()
{
var requestCount = 0;
var mutablePagedList = new MutablePagedList <int>((pageNumber, pageSize) =>
{
int totalCount;
var data = GetTestData((pageNumber - 1) * pageSize, pageSize, out totalCount);
requestCount++;
return(new StaticPagedList <int>(data, pageNumber, pageSize, totalCount));
}, 1, 5);
//force loading 1 page
mutablePagedList.ToArray();
Assert.True(requestCount == 1);
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 1);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 0);
Assert.True(mutablePagedList.Last() == 4);
//Change mutable list pageNumber to 2 (should load new data set)
mutablePagedList.Slice(2, 5);
//Load data by 2 times request
Assert.True(requestCount == 2);
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 2);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 5);
Assert.True(mutablePagedList.Last() == 9);
}
public void DelayLoadingPagedData_DataLoadedByMultiplePagedRequest()
{
var requestCount = 0;
var mutablePagedList = new MutablePagedList<int>((pageNumber, pageSize) =>
{
int totalCount;
var data = GetTestData((pageNumber - 1) * pageSize, pageSize, out totalCount);
requestCount++;
return new StaticPagedList<int>(data, pageNumber, pageSize, totalCount);
}, 1, 5);
//force loading 1 page
mutablePagedList.ToArray();
Assert.True(requestCount == 1);
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 1);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 0);
Assert.True(mutablePagedList.Last() == 4);
//Change mutable list pageNumber to 2 (should load new data set)
mutablePagedList.Slice(2, 5);
//Load data by 2 times request
Assert.True(requestCount == 2);
Assert.True(mutablePagedList.TotalItemCount == 10);
Assert.True(mutablePagedList.PageNumber == 2);
Assert.True(mutablePagedList.PageSize == 5);
Assert.True(mutablePagedList.PageCount == 2);
Assert.True(mutablePagedList.First() == 5);
Assert.True(mutablePagedList.Last() == 9);
}