public void TestEnumerators_NoPaging()
{
PagedDataSource ds = new PagedDataSource();
ds.AllowPaging = false;
//
// Collection Enumerator
//
Queue q = new Queue();
for (int i = 0; i < 50; i++)
{
q.Enqueue(i);
}
ds.DataSource = q;
EnumeratorTester_NoPaging(ds.GetEnumerator(), "collection");
//
// List Enumerator
//
ArrayList l = new ArrayList();
for (int i = 0; i < 50; i++)
{
l.Add(i);
}
EnumeratorTester_NoPaging(ds.GetEnumerator(), "list");
}
public void TestEnumerators()
{
PagedDataSource ds = new PagedDataSource();
ds.AllowPaging = true;
ds.PageSize = 10;
ds.CurrentPageIndex = 2;
//
// Collection Enumerator
//
Queue q = new Queue();
for (int i = 0; i < 50; i++)
{
q.Enqueue(i);
}
ds.DataSource = q;
EnumeratorTester(ds.GetEnumerator(), "collection");
//
// List Enumerator
//
ArrayList l = new ArrayList();
for (int i = 0; i < 50; i++)
{
l.Add(i);
}
EnumeratorTester(ds.GetEnumerator(), "list");
}
public void NullSource()
{
PagedDataSource ds = new PagedDataSource();
ds.DataSource = null;
IEnumerator data = ds.GetEnumerator();
}
public void Paging3()
{
PagedDataSource paged = new PagedDataSource();
paged.AllowPaging = true;
paged.PageSize = 5;
DataTable table = new DataTable();
FillTable(table, 100);
paged.DataSource = new DataView(table);
paged.CurrentPageIndex = -7;
Assert.AreEqual(-7, paged.CurrentPageIndex, "current");
Assert.IsFalse(paged.IsFirstPage, "first");
Assert.IsFalse(paged.IsLastPage, "last");
IEnumerator rator = paged.GetEnumerator();
Assert.AreEqual(-7, paged.CurrentPageIndex, "current-2");
Assert.IsTrue(rator.MoveNext(), "beyondtheend");
DataRowView drv = (DataRowView)rator.Current; // Throws (out of range)
}
public void Paging1()
{
PagedDataSource paged = new PagedDataSource();
paged.AllowPaging = true;
paged.PageSize = 5;
DataTable table = new DataTable();
FillTable(table, 100);
paged.DataSource = new DataView(table);
Assert.IsTrue(paged.IsFirstPage, "first-1");
Assert.IsFalse(paged.IsLastPage, "last-1");
paged.CurrentPageIndex = 100; // no problem setting this.
Assert.AreEqual(100, paged.CurrentPageIndex, "current-1");
Assert.IsFalse(paged.IsFirstPage, "first-2");
Assert.IsFalse(paged.IsLastPage, "last-2");
IEnumerator rator = paged.GetEnumerator();
Assert.IsFalse(rator.MoveNext(), "beyondtheend-1");
}
public void VirtualPager1()
{
PagedDataSource paged = new PagedDataSource();
paged.AllowPaging = true;
paged.PageSize = 20;
paged.VirtualCount = 100;
DataTable table = new DataTable();
FillTable(table, 100);
paged.DataSource = new DataView(table);
int count = 0;
IEnumerator rator = paged.GetEnumerator();
while (rator.MoveNext())
{
count++;
}
Assert.AreEqual(20, count, "count");
Assert.AreEqual(true, paged.IsFirstPage, "first");
Assert.AreEqual(false, paged.IsLastPage, "last");
}
public void Paging4()
{
PagedDataSource paged = new PagedDataSource();
paged.AllowPaging = true;
paged.PageSize = 5;
DataTable table = new DataTable();
FillTable(table, 100);
paged.DataSource = new DataView(table);
paged.CurrentPageIndex = 1;
IEnumerator rator = paged.GetEnumerator();
Assert.IsTrue(rator.MoveNext(), "beginning-1");
DataRowView drv = (DataRowView)rator.Current;
int one = Int32.Parse((string)drv ["one"]);
Assert.IsTrue(one == 0 || one == 1, "one-1");
int res = one + 2 * Int32.Parse((string)drv ["two"]);
Assert.AreEqual(5, res, "five");
}