public void TestEnumerator()
{
IDataReader reader = new DataProvider().GetAllCustomersDataReader();
var enumerator = new DataReaderEnumerator(reader);
Assert.IsTrue(reader.IsClosed);
Assert.AreEqual(3, enumerator.RowCount);
Assert.IsTrue(enumerator.MoveNext());
DataRow dataRow = enumerator.Current;
Assert.AreEqual(1, dataRow.ItemArray[dataRow.Table.Columns["Id"].Ordinal]);
Assert.AreEqual("Customer 1", dataRow.ItemArray[dataRow.Table.Columns["Name"].Ordinal]);
Assert.AreEqual(false, dataRow.ItemArray[dataRow.Table.Columns["IsVip"].Ordinal]);
Assert.AreEqual(DBNull.Value, dataRow.ItemArray[dataRow.Table.Columns["Type"].Ordinal]);
Assert.IsTrue(enumerator.MoveNext());
dataRow = enumerator.Current;
Assert.AreEqual(2, dataRow.ItemArray[dataRow.Table.Columns["Id"].Ordinal]);
Assert.AreEqual("Customer 2", dataRow.ItemArray[dataRow.Table.Columns["Name"].Ordinal]);
Assert.AreEqual(true, dataRow.ItemArray[dataRow.Table.Columns["IsVip"].Ordinal]);
Assert.AreEqual(1, dataRow.ItemArray[dataRow.Table.Columns["Type"].Ordinal]);
dataRow = enumerator.Current;
Assert.AreEqual(2, dataRow.ItemArray[dataRow.Table.Columns["Id"].Ordinal]);
Assert.AreEqual("Customer 2", dataRow.ItemArray[dataRow.Table.Columns["Name"].Ordinal]);
Assert.AreEqual(true, dataRow.ItemArray[dataRow.Table.Columns["IsVip"].Ordinal]);
Assert.AreEqual(1, dataRow.ItemArray[dataRow.Table.Columns["Type"].Ordinal]);
Assert.IsTrue(enumerator.MoveNext());
dataRow = enumerator.Current;
Assert.AreEqual(3, dataRow.ItemArray[dataRow.Table.Columns["Id"].Ordinal]);
Assert.AreEqual("Customer 3", dataRow.ItemArray[dataRow.Table.Columns["Name"].Ordinal]);
Assert.AreEqual(DBNull.Value, dataRow.ItemArray[dataRow.Table.Columns["IsVip"].Ordinal]);
Assert.AreEqual(DBNull.Value, dataRow.ItemArray[dataRow.Table.Columns["Type"].Ordinal]);
Assert.IsFalse(enumerator.MoveNext());
Assert.AreEqual(3, enumerator.RowCount);
enumerator.Reset();
Assert.AreEqual(3, enumerator.RowCount);
IList <DataRow> result = new List <DataRow>();
while (enumerator.MoveNext())
{
result.Add(enumerator.Current);
}
Assert.AreEqual(3, result.Count);
Assert.AreEqual(3, enumerator.RowCount);
}
public void Reset()
{
switch (_index)
{
case 1:
_reader.Reset();
break;
case 2:
_nv.Reset();
break;
case 3:
_row.Reset();
break;
case 4:
_dataSet.Reset();
break;
case 5:
_enumerator.Reset();
break;
case 6:
_pair.Reset();
break;
case 7:
_property.Reset();
break;
default:
throw new NotSupportedException();
}
}