Add test for Create activity with licensed article

plume-common/src/activity_pub/mod.rs

@@ -489,6 +489,7 @@ impl ToAsUri for OneOrMany<AnyBase> {
 #[cfg(test)]
 mod tests {
     use super::*;
+    use activitystreams::activity::Create;
     use assert_json_diff::assert_json_eq;
     use serde_json::{from_str, json, to_value};
 
@@ -626,4 +627,57 @@ mod tests {
 
         assert_eq!(to_value(value).unwrap(), expected);
     }
+
+    #[test]
+    fn de_create_with_licensed_article() {
+        let value: Create = from_str(
+            r#"
+              {
+                "id": "https://plu.me/~/Blog/my-article",
+                "type": "Create",
+                "actor": "https://plu.me/@/Admin",
+                "to": "https://www.w3.org/ns/activitystreams#Public",
+                "object": {
+                   "type": "Article",
+                   "id": "https://plu.me/~/Blog/my-article",
+                   "attributedTo": ["https://plu.me/@/Admin", "https://plu.me/~/Blog"],
+                   "content": "Hello.",
+                   "name": "My Article",
+                   "summary": "Bye.",
+                   "source": {
+                     "content": "Hello.",
+                     "mediaType": "text/markdown"
+                   },
+                   "published": "2014-12-12T12:12:12Z",
+                   "to": ["https://www.w3.org/ns/activitystreams#Public"],
+                   "license": "CC-0"
+                 }
+               }
+            "#,
+        )
+        .unwrap();
+        let expected = json!({
+            "id": "https://plu.me/~/Blog/my-article",
+            "type": "Create",
+            "actor": "https://plu.me/@/Admin",
+            "to": "https://www.w3.org/ns/activitystreams#Public",
+            "object": {
+                "type": "Article",
+                "id": "https://plu.me/~/Blog/my-article",
+                "attributedTo": ["https://plu.me/@/Admin", "https://plu.me/~/Blog"],
+                "content": "Hello.",
+                "name": "My Article",
+                "summary": "Bye.",
+                "source": {
+                    "content": "Hello.",
+                    "mediaType": "text/markdown"
+                },
+                "published": "2014-12-12T12:12:12Z",
+                "to": ["https://www.w3.org/ns/activitystreams#Public"],
+                "license": "CC-0"
+            }
+        });
+
+        assert_eq!(to_value(value).unwrap(), expected);
+    }
 }