test(rust/signed-doc): Add valid alias decoding as parameters case (#382)

* feat: initial

* chore: minor

* feat: add postcheck

* chore: minor assertion

Author: apskhem

rust/signed_doc/tests/decoding.rs

@@ -20,6 +20,64 @@ struct TestCase {
     post_checks: Option<Box<PostCheck>>,
 }
 
+fn signed_doc_with_valid_alias_case(alias: &'static str) -> TestCase {
+    let uuid_v7 = UuidV7::new();
+    let uuid_v4 = UuidV4::new();
+    let doc_ref = DocumentRef::new(UuidV7::new(), UuidV7::new(), DocLocator::default());
+    let doc_ref_cloned = doc_ref.clone();
+
+    TestCase {
+        name:
+            "Provided category_id, brand_id, campaign_id field should be processed as parameters.",
+        bytes_gen: Box::new({
+            move || {
+                let mut e = Encoder::new(Vec::new());
+                e.tag(Tag::new(98))?;
+                e.array(4)?;
+
+                // protected headers (metadata fields)
+                e.bytes({
+                    let mut p_headers = Encoder::new(Vec::new());
+                    p_headers.map(5)?;
+                    p_headers.u8(3)?.encode(ContentType::Json)?;
+                    p_headers
+                        .str("type")?
+                        .encode_with(uuid_v4, &mut catalyst_types::uuid::CborContext::Tagged)?;
+                    p_headers
+                        .str("id")?
+                        .encode_with(uuid_v7, &mut catalyst_types::uuid::CborContext::Tagged)?;
+                    p_headers
+                        .str("ver")?
+                        .encode_with(uuid_v7, &mut catalyst_types::uuid::CborContext::Tagged)?;
+                    p_headers
+                        .str(alias)?
+                        .encode_with(doc_ref.clone(), &mut ())?;
+
+                    p_headers.into_writer().as_slice()
+                })?;
+
+                // empty unprotected headers
+                e.map(0)?;
+                // content
+                e.bytes(serde_json::to_vec(&serde_json::Value::Null)?.as_slice())?;
+                // zero signatures
+                e.array(0)?;
+
+                Ok(e)
+            }
+        }),
+        can_decode: true,
+        valid_doc: true,
+        post_checks: Some(Box::new({
+            move |doc| {
+                let cmp = DocumentRefs::from(vec![doc_ref_cloned.clone()]);
+                anyhow::ensure!(doc.doc_meta().parameters() == Some(&cmp));
+                Ok(())
+            }
+        })),
+    }
+}
+
 // `parameters` value along with its aliases are not allowed to be presented
 fn signed_doc_with_parameters_and_aliases_case(aliases: &'static [&'static str]) -> TestCase {
     let uuid_v7 = UuidV7::new();
@@ -258,6 +316,9 @@ fn catalyst_signed_doc_decoding_test() {
     let test_cases = [
         decoding_empty_bytes_case(),
         signed_doc_with_all_fields_case(),
+        signed_doc_with_valid_alias_case("category_id"),
+        signed_doc_with_valid_alias_case("brand_id"),
+        signed_doc_with_valid_alias_case("campaign_id"),
         signed_doc_with_parameters_and_aliases_case(&["parameters", "category_id"]),
         signed_doc_with_parameters_and_aliases_case(&["parameters", "brand_id"]),
         signed_doc_with_parameters_and_aliases_case(&["parameters", "campaign_id"]),