public void Remove_BehavesAsExpected()
{
var item1 = new SqlBulkCopyColumnMapping(0, 0);
var item2 = new SqlBulkCopyColumnMapping(1, 1);
SqlBulkCopyColumnMappingCollection collection = CreateCollection(item1, item2);
collection.Remove(item1);
Assert.Equal(1, collection.Count);
Assert.Same(item2, collection[0]);
collection.Remove(item2);
Assert.Equal(0, collection.Count);
// The explicit implementation of IList.Remove throws ArgumentException if
// the item isn't in the collection, but the public Remove method does not
// throw in the full framework.
collection.Remove(item2);
collection.Remove(new SqlBulkCopyColumnMapping(2, 2));
IList list = CreateCollection(item1, item2);
list.Remove(item1);
Assert.Equal(1, list.Count);
Assert.Same(item2, list[0]);
list.Remove(item2);
Assert.Equal(0, list.Count);
Assert.Throws <ArgumentException>(() => list.Remove(item2));
Assert.Throws <ArgumentException>(() => list.Remove(new SqlBulkCopyColumnMapping(2, 2)));
Assert.Throws <ArgumentException>(() => list.Remove("bogus"));
}
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));
}