add test for user language being blank

src/types/api/user.rs

@@ -113,4 +113,36 @@ mod tests {
         };
         assert_eq!(user, expected);
     }
+
+    #[test]
+    fn deserialize_works_with_blank_language() {
+        let data = include_str!("../../../test_data/example_user_blank_language.json");
+        let user: User = serde_json::from_str(data).unwrap();
+        let expected = User {
+            active: IsActive::Yes,
+            avatar_url: OptionalUrl::Some(
+                Url::from_str("https://codeberg.org/avatars/foo-bar").unwrap(),
+            ),
+            created: DateTime::from_str("2022-11-04T14:41:29Z").unwrap(),
+            description: String::from(""),
+            email: Email::from_str("example@mail.com").unwrap(),
+            followers_count: 2,
+            following_count: 1,
+            full_name: String::from(""),
+            id: 12345,
+            is_admin: IsAdmin::No,
+            language: Locale::None,
+            last_login: DateTime::from_str("2023-07-26T19:38:27Z").unwrap(),
+            location: String::from(""),
+            login: String::from("ExampleUser"),
+            login_name: String::from(""),
+            prohibit_login: ProhibitLogin::No,
+            restricted: IsRestricted::No,
+            starred_repos_count: 0,
+            username: String::from("ExampleUser"),
+            visibility: Visibility::Public,
+            website: OptionalUrl::Some(Url::from_str("https://example.com").unwrap()),
+        };
+        assert_eq!(user, expected);
+    }
 }

test_data/example_user_blank_language.json

@@ -0,0 +1,23 @@
+{
+  "active": true,
+  "avatar_url": "https://codeberg.org/avatars/foo-bar",
+  "created": "2022-11-04T14:41:29Z",
+  "description": "",
+  "email": "example@mail.com",
+  "followers_count": 2,
+  "following_count": 1,
+  "full_name": "",
+  "id": 12345,
+  "is_admin": false,
+  "language": "",
+  "last_login": "2023-07-26T19:38:27Z",
+  "location": "",
+  "login": "ExampleUser",
+  "login_name": "",
+  "prohibit_login": false,
+  "restricted": false,
+  "starred_repos_count": 0,
+  "username": "ExampleUser",
+  "visibility": "public",
+  "website": "https://example.com"
+}