vortex_protocol/tlv/close.rs
1/*
2 * Copyright 2025 The Dragonfly Authors
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17use crate::error::Result;
18
19/// Close represents a close message.
20#[derive(Debug, Clone)]
21pub struct Close();
22
23/// Close implements the Close functions.
24impl Close {
25 /// new creates a new close.
26 pub fn new() -> Result<Self> {
27 Ok(Close())
28 }
29
30 /// len returns zero, because close message is empty.
31 pub fn len(&self) -> usize {
32 0
33 }
34
35 /// is_empty returns true, because close message is empty.
36 pub fn is_empty(&self) -> bool {
37 true
38 }
39}
40
41#[cfg(test)]
42mod tests {
43 use super::*;
44
45 #[test]
46 fn test_new() {
47 let result = Close::new();
48
49 assert!(result.is_ok());
50 assert_eq!(result.unwrap().len(), 0);
51 }
52
53 #[test]
54 fn test_is_empty() {
55 let result = Close::new();
56
57 assert!(result.is_ok());
58 assert!(result.unwrap().is_empty());
59 }
60}