public void Methods_NullParameterPassed_ThrowsArgumentNullException()
{
SqlBulkCopyColumnMappingCollection collection = CreateCollection();
collection.Add(new SqlBulkCopyColumnMapping());
Assert.Throws <ArgumentNullException>(() => collection.CopyTo(null, 0));
// Passing null to the public Add method should really throw ArgumentNullException
// (which would be consistent with the explicit implementation of IList.Add), but
// the full framework does not check for null in the public Add method. Instead it
// accesses the parameter without first checking for null, resulting in
// NullReferenceExpcetion being thrown.
Assert.Throws <NullReferenceException>(() => collection.Add(null));
// Passing null to the public Insert and Remove methods should really throw
// ArgumentNullException (which would be consistent with the explicit
// implementations of IList.Insert and IList.Remove), but the full framework
// does not check for null in these methods.
collection.Insert(0, null);
collection.Remove(null);
IList list = collection;
Assert.Throws <ArgumentNullException>(() => list[0] = null);
Assert.Throws <ArgumentNullException>(() => list.Add(null));
Assert.Throws <ArgumentNullException>(() => list.CopyTo(null, 0));
Assert.Throws <ArgumentNullException>(() => list.Insert(0, null));
Assert.Throws <ArgumentNullException>(() => list.Remove(null));
}
public void CopyTo_ItemsAdded_ItemsCopiedToArray()
{
var item1 = new SqlBulkCopyColumnMapping(0, 0);
var item2 = new SqlBulkCopyColumnMapping(1, 1);
var item3 = new SqlBulkCopyColumnMapping(2, 2);
SqlBulkCopyColumnMappingCollection collection = CreateCollection(item1, item2, item3);
var array1 = new SqlBulkCopyColumnMapping[collection.Count];
collection.CopyTo(array1, 0);
Assert.Same(item1, array1[0]);
Assert.Same(item2, array1[1]);
Assert.Same(item3, array1[2]);
var array2 = new SqlBulkCopyColumnMapping[collection.Count];
((ICollection)collection).CopyTo(array2, 0);
Assert.Same(item1, array2[0]);
Assert.Same(item2, array2[1]);
Assert.Same(item3, array2[2]);
}