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::{Deserialize, Serialize};
   4
   5 #[derive(
   6   Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize, Clone,
   7 )]
   8 #[table_name = "comment_aggregates"]
   9 pub struct CommentAggregates {
  10   pub id: i32,
  11   pub comment_id: CommentId,
  12   pub score: i64,
  13   pub upvotes: i64,
  14   pub downvotes: i64,
  15   pub published: chrono::NaiveDateTime,
  16 }
  17
  18 impl CommentAggregates {
  19   pub fn read(conn: &PgConnection, comment_id: CommentId) -> Result<Self, Error> {
  20     comment_aggregates::table
  21       .filter(comment_aggregates::comment_id.eq(comment_id))
  22       .first::<Self>(conn)
  23   }
  24 }
  25
  26 #[cfg(test)]
  27 mod tests {
  28   use crate::{
  29     aggregates::comment_aggregates::CommentAggregates,
  30     establish_unpooled_connection,
  31     Crud,
  32     Likeable,
  33   };
  34   use lemmy_db_schema::source::{
  35     comment::{Comment, CommentForm, CommentLike, CommentLikeForm},
  36     community::{Community, CommunityForm},
  37     person::{Person, PersonForm},
  38     post::{Post, PostForm},
  39   };
  40   use serial_test::serial;
  41
  42   #[test]
  43   #[serial]
  44   fn test_crud() {
  45     let conn = establish_unpooled_connection();
  46
  47     let new_person = PersonForm {
  48       name: "thommy_comment_agg".into(),
  49       ..PersonForm::default()
  50     };
  51
  52     let inserted_person = Person::create(&conn, &new_person).unwrap();
  53
  54     let another_person = PersonForm {
  55       name: "jerry_comment_agg".into(),
  56       ..PersonForm::default()
  57     };
  58
  59     let another_inserted_person = Person::create(&conn, &another_person).unwrap();
  60
  61     let new_community = CommunityForm {
  62       name: "TIL_comment_agg".into(),
  63       title: "nada".to_owned(),
  64       ..CommunityForm::default()
  65     };
  66
  67     let inserted_community = Community::create(&conn, &new_community).unwrap();
  68
  69     let new_post = PostForm {
  70       name: "A test post".into(),
  71       creator_id: inserted_person.id,
  72       community_id: inserted_community.id,
  73       ..PostForm::default()
  74     };
  75
  76     let inserted_post = Post::create(&conn, &new_post).unwrap();
  77
  78     let comment_form = CommentForm {
  79       content: "A test comment".into(),
  80       creator_id: inserted_person.id,
  81       post_id: inserted_post.id,
  82       ..CommentForm::default()
  83     };
  84
  85     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
  86
  87     let child_comment_form = CommentForm {
  88       content: "A test comment".into(),
  89       creator_id: inserted_person.id,
  90       post_id: inserted_post.id,
  91       parent_id: Some(inserted_comment.id),
  92       ..CommentForm::default()
  93     };
  94
  95     let _inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
  96
  97     let comment_like = CommentLikeForm {
  98       comment_id: inserted_comment.id,
  99       post_id: inserted_post.id,
 100       person_id: inserted_person.id,
 101       score: 1,
 102     };
 103
 104     CommentLike::like(&conn, &comment_like).unwrap();
 105
 106     let comment_aggs_before_delete = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 107
 108     assert_eq!(1, comment_aggs_before_delete.score);
 109     assert_eq!(1, comment_aggs_before_delete.upvotes);
 110     assert_eq!(0, comment_aggs_before_delete.downvotes);
 111
 112     // Add a post dislike from the other person
 113     let comment_dislike = CommentLikeForm {
 114       comment_id: inserted_comment.id,
 115       post_id: inserted_post.id,
 116       person_id: another_inserted_person.id,
 117       score: -1,
 118     };
 119
 120     CommentLike::like(&conn, &comment_dislike).unwrap();
 121
 122     let comment_aggs_after_dislike = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 123
 124     assert_eq!(0, comment_aggs_after_dislike.score);
 125     assert_eq!(1, comment_aggs_after_dislike.upvotes);
 126     assert_eq!(1, comment_aggs_after_dislike.downvotes);
 127
 128     // Remove the first comment like
 129     CommentLike::remove(&conn, inserted_person.id, inserted_comment.id).unwrap();
 130     let after_like_remove = CommentAggregates::read(&conn, inserted_comment.id).unwrap();
 131     assert_eq!(-1, after_like_remove.score);
 132     assert_eq!(0, after_like_remove.upvotes);
 133     assert_eq!(1, after_like_remove.downvotes);
 134
 135     // Remove the parent post
 136     Post::delete(&conn, inserted_post.id).unwrap();
 137
 138     // Should be none found, since the post was deleted
 139     let after_delete = CommentAggregates::read(&conn, inserted_comment.id);
 140     assert!(after_delete.is_err());
 141
 142     // This should delete all the associated rows, and fire triggers
 143     Person::delete(&conn, another_inserted_person.id).unwrap();
 144     let person_num_deleted = Person::delete(&conn, inserted_person.id).unwrap();
 145     assert_eq!(1, person_num_deleted);
 146
 147     // Delete the community
 148     let community_num_deleted = Community::delete(&conn, inserted_community.id).unwrap();
 149     assert_eq!(1, community_num_deleted);
 150   }
 151 }