Add unit test

Author: SergeiPatiakinEdb

iceberg-rust/src/view/transaction/operation.rs

@@ -167,3 +167,46 @@ impl Operation {
         }
     }
 }
+
+mod tests {
+    use super::upsert_representations;
+    use iceberg_rust_spec::view_metadata::ViewRepresentation;
+
+    #[test]
+    fn test_upsert_representations() {
+        assert_eq!(
+            upsert_representations(
+                &vec![
+                    ViewRepresentation::sql("a1", Some("a")),
+                    ViewRepresentation::sql("b1", Some("b")),
+                ],
+                &vec![
+                    ViewRepresentation::sql("b2", Some("b")),
+                    ViewRepresentation::sql("c2", Some("c")),
+                ]
+            ),
+            vec![
+                ViewRepresentation::sql("a1", Some("a")),
+                ViewRepresentation::sql("b2", Some("b")),
+                ViewRepresentation::sql("c2", Some("c")),
+            ]
+        );
+        assert_eq!(
+            upsert_representations(
+                &vec![
+                    ViewRepresentation::sql("a1", Some("a")),
+                    ViewRepresentation::sql("b1", Some("b")),
+                ],
+                &vec![
+                    ViewRepresentation::sql("c2", Some("c")),
+                    ViewRepresentation::sql("a2", Some("a")),
+                ]
+            ),
+            vec![
+                ViewRepresentation::sql("a2", Some("a")),
+                ViewRepresentation::sql("b1", Some("b")),
+                ViewRepresentation::sql("c2", Some("c")),
+            ]
+        );
+    }
+}