sqlx_postgres/message/
parameter_status.rs

1use sqlx_core::bytes::Bytes;
2
3use crate::error::Error;
4use crate::io::BufExt;
5use crate::message::{BackendMessage, BackendMessageFormat};
6
7#[derive(Debug)]
8pub struct ParameterStatus {
9    pub name: String,
10    pub value: String,
11}
12
13impl BackendMessage for ParameterStatus {
14    const FORMAT: BackendMessageFormat = BackendMessageFormat::ParameterStatus;
15
16    fn decode_body(mut buf: Bytes) -> Result<Self, Error> {
17        let name = buf.get_str_nul()?;
18        let value = buf.get_str_nul()?;
19
20        Ok(Self { name, value })
21    }
22}
23
24#[test]
25fn test_decode_parameter_status() {
26    const DATA: &[u8] = b"client_encoding\x00UTF8\x00";
27
28    let m = ParameterStatus::decode_body(DATA.into()).unwrap();
29
30    assert_eq!(&m.name, "client_encoding");
31    assert_eq!(&m.value, "UTF8")
32}
33
34#[test]
35fn test_decode_empty_parameter_status() {
36    const DATA: &[u8] = b"\x00\x00";
37
38    let m = ParameterStatus::decode_body(DATA.into()).unwrap();
39
40    assert!(m.name.is_empty());
41    assert!(m.value.is_empty());
42}
43
44#[cfg(all(test, not(debug_assertions)))]
45#[bench]
46fn bench_decode_parameter_status(b: &mut test::Bencher) {
47    const DATA: &[u8] = b"client_encoding\x00UTF8\x00";
48
49    b.iter(|| {
50        ParameterStatus::decode_body(test::black_box(Bytes::from_static(DATA))).unwrap();
51    });
52}
53
54#[test]
55fn test_decode_parameter_status_response() {
56    const PARAMETER_STATUS_RESPONSE: &[u8] = b"crdb_version\0CockroachDB CCL v21.1.0 (x86_64-unknown-linux-gnu, built 2021/05/17 13:49:40, go1.15.11)\0";
57
58    let message = ParameterStatus::decode_body(Bytes::from(PARAMETER_STATUS_RESPONSE)).unwrap();
59
60    assert_eq!(message.name, "crdb_version");
61    assert_eq!(
62        message.value,
63        "CockroachDB CCL v21.1.0 (x86_64-unknown-linux-gnu, built 2021/05/17 13:49:40, go1.15.11)"
64    );
65}
sqlx_postgres/message/parameter_status.rs

sqlx_postgres/message/
parameter_status.rs
