added test for mssql protocol Info (#1891)

sqlx-core/src/mssql/protocol/info.rs

@@ -3,6 +3,7 @@ use bytes::{Buf, Bytes};
 use crate::error::Error;
 use crate::mssql::io::MssqlBufExt;
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub(crate) struct Info {
     pub(crate) number: u32,
@@ -38,3 +39,21 @@ impl Info {
         })
     }
 }
+
+#[test]
+fn test_get() {
+    #[rustfmt::skip]
+    let mut buf = Bytes::from_static(&[
+        0x74, 0, 0x47, 0x16, 0, 0, 1, 0, 0x27, 0, 0x43, 0, 0x68, 0, 0x61, 0, 0x6e, 0, 0x67, 0, 0x65, 0, 0x64, 0, 0x20, 0, 0x6c, 0, 0x61, 0, 0x6e, 0, 0x67, 0, 0x75, 0, 0x61, 0, 0x67, 0, 0x65, 0, 0x20, 0, 0x73, 0, 0x65, 0, 0x74, 0, 0x74, 0, 0x69, 0, 0x6e, 0, 0x67, 0, 0x20, 0, 0x74, 0, 0x6f, 0, 0x20, 0, 0x75, 0, 0x73, 0, 0x5f, 0, 0x65, 0, 0x6e, 0, 0x67, 0, 0x6c, 0, 0x69, 0, 0x73, 0, 0x68, 0, 0x2e, 0, 0xc, 0x61, 0, 0x62, 0, 0x64, 0, 0x30, 0, 0x62, 0, 0x36, 0, 0x37, 0, 0x62, 0, 0x64, 0, 0x34, 0, 0x39, 0, 0x33, 0, 0, 1, 0, 0, 0, 0xad, 0x36, 0, 1, 0x74, 0, 0, 4, 0x16, 0x4d, 0, 0x69, 0, 0x63, 0, 0x72, 0, 0x6f, 0, 0x73, 0, 0x6f, 0, 0x66, 0, 0x74, 0, 0x20, 0, 0x53, 0, 0x51, 0, 0x4c, 0, 0x20, 0, 0x53, 0, 0x65, 0, 0x72, 0, 0x76, 0, 0x65, 0, 0x72, 0, 0, 0, 0, 0, 0xf, 0, 0x10, 0x7f, 0xe3, 0x13, 0, 4, 4, 0x34, 0, 0x30, 0, 0x39, 0, 0x36, 0, 4, 0x34, 0, 0x30, 0, 0x39, 0, 0x36, 0, 0xfd, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    ]);
+
+    let info = Info::get(&mut buf).unwrap();
+
+    assert_eq!(info.number, 5703);
+    assert_eq!(info.state, 1);
+    assert_eq!(info.class, 0);
+    assert_eq!(info.message, "Changed language setting to us_english.");
+    assert_eq!(info.server, "abd0b67bd493");
+    assert_eq!(info.procedure, "");
+    assert_eq!(info.line, 1);
+}