Unittest for Search by title only (#5033)

* added test for search by title only

* formatted rust files

crates/db_views/src/post_view.rs

@@ -780,6 +780,7 @@ mod tests {
   use std::{collections::HashSet, time::Duration};
   use url::Url;
 
+  const POST_WITH_ANOTHER_TITLE: &str = "Another title";
   const POST_BY_BLOCKED_PERSON: &str = "post by blocked person";
   const POST_BY_BOT: &str = "post by bot";
   const POST: &str = "post";
@@ -1028,6 +1029,63 @@ mod tests {
     cleanup(data, pool).await
   }
 
+  #[tokio::test]
+  #[serial]
+  async fn post_listing_title_only() -> LemmyResult<()> {
+    let pool = &build_db_pool().await?;
+    let pool = &mut pool.into();
+    let data = init_data(pool).await?;
+
+    // A post which contains the search them 'Post' not in the title (but in the body)
+    let new_post = PostInsertForm::builder()
+      .name(POST_WITH_ANOTHER_TITLE.to_string())
+      .creator_id(data.local_user_view.person.id)
+      .community_id(data.inserted_community.id)
+      .language_id(Some(LanguageId(47)))
+      .body(Some("Post".to_string()))
+      .build();
+
+    let inserted_post = Post::create(pool, &new_post).await?;
+
+    let read_post_listing_by_title_only = PostQuery {
+      community_id: Some(data.inserted_community.id),
+      local_user: None,
+      search_term: Some("Post".to_string()),
+      title_only: Some(true),
+      ..data.default_post_query()
+    }
+    .list(&data.site, pool)
+    .await?;
+
+    let read_post_listing = PostQuery {
+      community_id: Some(data.inserted_community.id),
+      local_user: None,
+      search_term: Some("Post".to_string()),
+      ..data.default_post_query()
+    }
+    .list(&data.site, pool)
+    .await?;
+
+    // Should be 4 posts when we do not search for title only
+    assert_eq!(
+      vec![
+        POST_WITH_ANOTHER_TITLE,
+        POST_BY_BOT,
+        POST,
+        POST_BY_BLOCKED_PERSON
+      ],
+      names(&read_post_listing)
+    );
+
+    // Should be 3 posts when we search for title only
+    assert_eq!(
+      vec![POST_BY_BOT, POST, POST_BY_BLOCKED_PERSON],
+      names(&read_post_listing_by_title_only)
+    );
+    Post::delete(pool, inserted_post.id).await?;
+    cleanup(data, pool).await
+  }
+
   #[tokio::test]
   #[serial]
   async fn post_listing_block_community() -> LemmyResult<()> {