added test for mssql ReturnValue (#1892)

* added test for mssql ReturnValue

* fixed warnings: unused import: `DataType`

Author: walf443

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

@@ -4,8 +4,11 @@ use bytes::{Buf, Bytes};
 use crate::error::Error;
 use crate::mssql::io::MssqlBufExt;
 use crate::mssql::protocol::col_meta_data::Flags;
+#[cfg(test)]
+use crate::mssql::protocol::type_info::DataType;
 use crate::mssql::protocol::type_info::TypeInfo;
 
+#[allow(dead_code)]
 #[derive(Debug)]
 pub(crate) struct ReturnValue {
     param_ordinal: u16,
@@ -48,3 +51,27 @@ impl ReturnValue {
         })
     }
 }
+
+#[test]
+fn test_get() {
+    #[rustfmt::skip]
+    let mut buf = Bytes::from_static(&[
+        0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0x26, 4, 4, 1, 0, 0, 0, 0xfe, 0, 0, 0xe0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    ]);
+
+    let return_value = ReturnValue::get(&mut buf).unwrap();
+
+    assert_eq!(return_value.param_ordinal, 0);
+    assert_eq!(return_value.param_name, "");
+    assert_eq!(
+        return_value.status,
+        ReturnValueStatus::from_bits_truncate(1)
+    );
+    assert_eq!(return_value.user_type, 0);
+    assert_eq!(return_value.flags, Flags::from_bits_truncate(0));
+    assert_eq!(return_value.type_info, TypeInfo::new(DataType::IntN, 4));
+    assert_eq!(
+        return_value.value,
+        Some(Bytes::from_static(&[0x01, 0, 0, 0]))
+    );
+}

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

@@ -660,3 +660,14 @@ impl Collation {
         buf.push(self.sort);
     }
 }
+
+#[test]
+fn test_get() {
+    #[rustfmt::skip]
+    let mut buf = Bytes::from_static(&[
+        0x26, 4, 4, 1, 0, 0, 0, 0xfe, 0, 0, 0xe0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+    ]);
+
+    let type_info = TypeInfo::get(&mut buf).unwrap();
+    assert_eq!(type_info, TypeInfo::new(DataType::IntN, 4));
+}