From 612af8b303a5170dd1f052b484a8e41860cfed7f Mon Sep 17 00:00:00 2001
From: Rik Heijdens <r.heijdens@lithic.com>
Date: Thu, 29 Sep 2022 14:14:35 +0200
Subject: [PATCH] AVRO-3631: Add test for serializing fixed fields

This test-case mainly demonstrates the issue reported in AVRO-3631. It
is unclear to me whether we should actually expect the serializer to
serialize to a Value::Fixed right away given that Schema information is
not available at this stage.
---
 lang/rust/avro/src/ser.rs | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/lang/rust/avro/src/ser.rs b/lang/rust/avro/src/ser.rs
index 9f05836ab22..aa033f7b6ee 100644
--- a/lang/rust/avro/src/ser.rs
+++ b/lang/rust/avro/src/ser.rs
@@ -676,6 +676,11 @@ mod tests {
         Val2(f32, f32, f32),
     }
 
+    #[derive(Debug, Serialize, Deserialize)]
+    struct TestStructFixedField {
+        field: [u8; 6],
+    }
+
     #[test]
     fn test_to_value() -> TestResult {
         let test = Test {
@@ -1031,4 +1036,18 @@ mod tests {
 
         assert!(ser.is_human_readable());
     }
+
+    #[test]
+    fn test_to_value_fixed_field_avro_3631() {
+        let test = TestStructFixedField { field: [1; 6] };
+        let expected = Value::Record(vec![(
+            "field".to_owned(),
+            Value::Fixed(6, Vec::from(test.field.clone())),
+        )]);
+        assert_eq!(
+            to_value(test).unwrap(),
+            expected,
+            "error serializing fixed array"
+        );
+    }
 }