dragonfly_client_core/error/
message.rs

1/*
2 *     Copyright 2024 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 std::borrow::Cow;
18
19/// The message for the error.
20#[derive(Debug)]
21pub struct Message(Cow<'static, str>);
22
23/// From<&'static str> for Message implements the conversion from &'static str to Message.
24impl From<&'static str> for Message {
25    /// Returns the message from the string.
26    fn from(s: &'static str) -> Self {
27        Message(Cow::Borrowed(s))
28    }
29}
30
31/// From<String> for Message implements the conversion from String to Message.
32impl From<String> for Message {
33    /// Returns the message from the string.
34    fn from(s: String) -> Self {
35        Message(Cow::Owned(s))
36    }
37}
38
39/// Implements the message for the error.
40impl Message {
41    /// Returns the string of the message.
42    pub fn as_str(&self) -> &str {
43        &self.0
44    }
45}
46
47#[cfg(test)]
48mod tests {
49    use super::*;
50
51    #[test]
52    fn from_str_and_string_preserve_text() {
53        let test_cases: Vec<(Message, &str)> = vec![
54            ("hello".into(), "hello"),
55            ("world".to_string().into(), "world"),
56        ];
57
58        for (message, expected) in test_cases {
59            assert_eq!(message.as_str(), expected);
60        }
61    }
62}
dragonfly_client_core/error/message.rs

dragonfly_client_core/error/
message.rs
