Add endpoint to get information for a synonym

Signed-off-by: trivernis <trivernis@protonmail.com>

src/client.rs

@@ -1,5 +1,7 @@
 use crate::error::ApiResult;
-use crate::models::{Anime, Artist, Image, Resource, SearchResponse, Series, ThemeEntry};
+use crate::models::{
+    Anime, AnimeSynonym, Artist, Image, Resource, SearchResponse, Series, ThemeEntry,
+};
 use reqwest::Response;
 use serde::de::DeserializeOwned;
 use serde::Serialize;
@@ -100,6 +102,11 @@ impl AnimeThemesClient {
         self.entry_by_id_with_include("series", slug, include).await
     }
 
+    /// Returns a synonym by id
+    pub async fn synonym(&self, id: u32, include: &[&str]) -> ApiResult<AnimeSynonym> {
+        self.entry_by_id_with_include("synonym", id, include).await
+    }
+
     /// Generic endpoint with the format /<endpoint>/<id> returning the type on the json field <endpoint>
     async fn entry_by_id_with_include<T: DeserializeOwned, I: Display>(
         &self,

src/models.rs

@@ -36,6 +36,7 @@ pub struct AnimeSynonym {
     #[serde(flatten)]
     pub meta: EntryMetadata,
     pub text: String,
+    pub anime: Option<Anime>,
 }
 
 #[derive(Debug, Clone, Deserialize)]

src/tests/test_client.rs

@@ -67,3 +67,11 @@ async fn it_returns_series_by_slug() {
 
     assert!(result.anime.is_some())
 }
+
+#[tokio::test]
+async fn it_returns_synonyms_b_id() {
+    let client = AnimeThemesClient::default();
+    let result = client.synonym(2462, &["anime"]).await.unwrap();
+
+    assert!(result.anime.is_some())
+}