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]); }