assertEquals(100, sendReceiveResult);
            assertEquals(50, receiveResult);
        }

        @Test
        @DisplayName("Should handle send fragment operation")
        void testSendFragment() throws IOException {
            // When: Calling send fragment (no-op implementation)
            // Then: Should not throw exception
            assertDoesNotThrow(() -> handle.doSendFragment(new byte[10], 0, 10));