crates/db_queries/src/aggregates/comment_aggregates.rs

   1 use diesel::{result::Error, *};
   2 use lemmy_db_schema::{schema::comment_aggregates, CommentId};
   3 use serde::Serialize;
   4
   5 #[derive(Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Clone)]
   6 #[table_name = "comment_aggregates"]
   7 pub struct CommentAggregates {
   8   pub id: i32,
   9   pub comment_id: CommentId,
  10   pub score: i64,
  11   pub upvotes: i64,
  12   pub downvotes: i64,
  13   pub published: chrono::NaiveDateTime,
  14 }
  15
  16 impl CommentAggregates {
  17   pub fn read(conn: &PgConnection, comment_id: CommentId) -> Result<Self, Error> {
  18     comment_aggregates::table
  19       .filter(comment_aggregates::comment_id.eq(comment_id))
  20       .first::<Self>(conn)
  21   }
  22 }
  23
  24 #[cfg(test)]
  25 mod tests {
  26   use crate::{
  27     aggregates::comment_aggregates::CommentAggregates,
  28     establish_unpooled_connection,
  29     Crud,
  30     Likeable,
  31   };
  32   use lemmy_db_schema::source::{
  33     comment::{Comment, CommentForm, CommentLike, CommentLikeForm},
  34     community::{Community, CommunityForm},
  35     person::{Person, PersonForm},
  36     post::{Post, PostForm},
  37   };
  38   use serial_test::serial;
  39
  40   #[test]
  41   #[serial]
  42   fn test_crud() {
  43     let conn = establish_unpooled_connection();
  44
  45     let new_person = PersonForm {
  46       name: "thommy_comment_agg".into(),
  47       ..PersonForm::default()
  48     };
  49
  50     let inserted_person = Person::create(&conn, &new_person).unwrap();
  51
  52     let another_person = PersonForm {
  53       name: "jerry_comment_agg".into(),
  54       ..PersonForm::default()
  55     };
  56
  57     let another_inserted_person = Person::create(&conn, &another_person).unwrap();
  58
  59     let new_community = CommunityForm {
  60       name: "TIL_comment_agg".into(),
  61       title: "nada".to_owned(),
  62       ..CommunityForm::default()
  63     };
  64
  65     let inserted_community = Community::create(&conn, &new_community).unwrap();
  66
  67     let new_post = PostForm {
  68       name: "A test post".into(),
  69       creator_id: inserted_person.id,
  70       community_id: inserted_community.id,
  71       ..PostForm::default()
  72     };
  73
  74     let inserted_post = Post::create(&conn, &new_post).unwrap();
  75
  76     let comment_form = CommentForm {
  77       content: "A test comment".into(),
  78       creator_id: inserted_person.id,
  79       post_id: inserted_post.id,
  80       ..CommentForm::default()
  81     };
  82
  83     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
  84
  85     let child_comment_form = CommentForm {
  86       content: "A test comment".into(),
  87       creator_id: inserted_person.id,
  88       post_id: inserted_post.id,
  89       parent_id: Some(inserted_comment.id),
  90       ..CommentForm::default()
  91     };
  92
  93     let _inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
  94
  95     let comment_like = CommentLikeForm {
  96       comment_id: inserted_comment.id,
  97       post_id: inserted_post.id,
  98       person_id: inserted_person.id,
  99       score: 1,
 100     };
 101
 102     CommentLike::like(&conn, &comment_like).unwrap();
 103
 104     let comment_aggs_before_delete = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 105
 106     assert_eq!(1, comment_aggs_before_delete.score);
 107     assert_eq!(1, comment_aggs_before_delete.upvotes);
 108     assert_eq!(0, comment_aggs_before_delete.downvotes);
 109
 110     // Add a post dislike from the other person
 111     let comment_dislike = CommentLikeForm {
 112       comment_id: inserted_comment.id,
 113       post_id: inserted_post.id,
 114       person_id: another_inserted_person.id,
 115       score: -1,
 116     };
 117
 118     CommentLike::like(&conn, &comment_dislike).unwrap();
 119
 120     let comment_aggs_after_dislike = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 121
 122     assert_eq!(0, comment_aggs_after_dislike.score);
 123     assert_eq!(1, comment_aggs_after_dislike.upvotes);
 124     assert_eq!(1, comment_aggs_after_dislike.downvotes);
 125
 126     // Remove the first comment like
 127     CommentLike::remove(&conn, inserted_person.id, inserted_comment.id).unwrap();
 128     let after_like_remove = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 129     assert_eq!(-1, after_like_remove.score);
 130     assert_eq!(0, after_like_remove.upvotes);
 131     assert_eq!(1, after_like_remove.downvotes);
 132
 133     // Remove the parent post
 134     Post::delete(&conn, inserted_post.id).unwrap();
 135
 136     // Should be none found, since the post was deleted
 137     let after_delete = CommentAggregates::read(&conn, inserted_comment.id);
 138     assert!(after_delete.is_err());
 139
 140     // This should delete all the associated rows, and fire triggers
 141     Person::delete(&conn, another_inserted_person.id).unwrap();
 142     let person_num_deleted = Person::delete(&conn, inserted_person.id).unwrap();
 143     assert_eq!(1, person_num_deleted);
 144
 145     // Delete the community
 146     let community_num_deleted = Community::delete(&conn, inserted_community.id).unwrap();
 147     assert_eq!(1, community_num_deleted);
 148   }
 149 }