chore: transact items to be a variadic function

Author: omkar-till

tests/transact_items_test.go

@@ -102,7 +102,7 @@ func TestTransactItems(t *testing.T) {
 			}
 			//perform operations
 			if len(tc.operations) > 0 {
-				err := table.TransactItems(ctx, tc.operations)
+				err := table.TransactItems(ctx, tc.operations...)
 				if err != nil {
 					t.Fatalf("error occurred %s", err)
 				}

transaction_items.go

@@ -46,7 +46,7 @@ func (t *Client) WithPutItem(pk string, sk string, item interface{}) types.Trans
 
 // TransactItems is a synchronous for writing or deletion operation performed in dynamodb grouped together
 
-func (t *Client) TransactItems(ctx context.Context, input []types.TransactWriteItem) error {
+func (t *Client) TransactItems(ctx context.Context, input ...types.TransactWriteItem) error {
 	_, err := t.client.TransactWriteItems(ctx, &dynamodb.TransactWriteItemsInput{
 		TransactItems: input,
 	})