crates/db_schema/src/aggregates/post_aggregates.rs

   1 use crate::{newtypes::PostId, schema::post_aggregates};
   2 use diesel::{result::Error, *};
   3 use serde::{Deserialize, Serialize};
   4
   5 #[derive(
   6   Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize, Clone,
   7 )]
   8 #[table_name = "post_aggregates"]
   9 pub struct PostAggregates {
  10   pub id: i32,
  11   pub post_id: PostId,
  12   pub comments: i64,
  13   pub score: i64,
  14   pub upvotes: i64,
  15   pub downvotes: i64,
  16   pub stickied: bool,
  17   pub published: chrono::NaiveDateTime,
  18   pub newest_comment_time_necro: chrono::NaiveDateTime, // A newest comment time, limited to 2 days, to prevent necrobumping
  19   pub newest_comment_time: chrono::NaiveDateTime,
  20 }
  21
  22 impl PostAggregates {
  23   pub fn read(conn: &PgConnection, post_id: PostId) -> Result<Self, Error> {
  24     post_aggregates::table
  25       .filter(post_aggregates::post_id.eq(post_id))
  26       .first::<Self>(conn)
  27   }
  28 }
  29
  30 #[cfg(test)]
  31 mod tests {
  32   use crate::{
  33     aggregates::post_aggregates::PostAggregates,
  34     establish_unpooled_connection,
  35     source::{
  36       comment::{Comment, CommentForm},
  37       community::{Community, CommunityForm},
  38       person::{Person, PersonForm},
  39       post::{Post, PostForm, PostLike, PostLikeForm},
  40     },
  41     traits::{Crud, Likeable},
  42   };
  43   use serial_test::serial;
  44
  45   #[test]
  46   #[serial]
  47   fn test_crud() {
  48     let conn = establish_unpooled_connection();
  49
  50     let new_person = PersonForm {
  51       name: "thommy_community_agg".into(),
  52       ..PersonForm::default()
  53     };
  54
  55     let inserted_person = Person::create(&conn, &new_person).unwrap();
  56
  57     let another_person = PersonForm {
  58       name: "jerry_community_agg".into(),
  59       ..PersonForm::default()
  60     };
  61
  62     let another_inserted_person = Person::create(&conn, &another_person).unwrap();
  63
  64     let new_community = CommunityForm {
  65       name: "TIL_community_agg".into(),
  66       title: "nada".to_owned(),
  67       ..CommunityForm::default()
  68     };
  69
  70     let inserted_community = Community::create(&conn, &new_community).unwrap();
  71
  72     let new_post = PostForm {
  73       name: "A test post".into(),
  74       creator_id: inserted_person.id,
  75       community_id: inserted_community.id,
  76       ..PostForm::default()
  77     };
  78
  79     let inserted_post = Post::create(&conn, &new_post).unwrap();
  80
  81     let comment_form = CommentForm {
  82       content: "A test comment".into(),
  83       creator_id: inserted_person.id,
  84       post_id: inserted_post.id,
  85       ..CommentForm::default()
  86     };
  87
  88     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
  89
  90     let child_comment_form = CommentForm {
  91       content: "A test comment".into(),
  92       creator_id: inserted_person.id,
  93       post_id: inserted_post.id,
  94       parent_id: Some(inserted_comment.id),
  95       ..CommentForm::default()
  96     };
  97
  98     let _inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
  99
 100     let post_like = PostLikeForm {
 101       post_id: inserted_post.id,
 102       person_id: inserted_person.id,
 103       score: 1,
 104     };
 105
 106     PostLike::like(&conn, &post_like).unwrap();
 107
 108     let post_aggs_before_delete = PostAggregates::read(&conn, inserted_post.id).unwrap();
 109
 110     assert_eq!(2, post_aggs_before_delete.comments);
 111     assert_eq!(1, post_aggs_before_delete.score);
 112     assert_eq!(1, post_aggs_before_delete.upvotes);
 113     assert_eq!(0, post_aggs_before_delete.downvotes);
 114
 115     // Add a post dislike from the other person
 116     let post_dislike = PostLikeForm {
 117       post_id: inserted_post.id,
 118       person_id: another_inserted_person.id,
 119       score: -1,
 120     };
 121
 122     PostLike::like(&conn, &post_dislike).unwrap();
 123
 124     let post_aggs_after_dislike = PostAggregates::read(&conn, inserted_post.id).unwrap();
 125
 126     assert_eq!(2, post_aggs_after_dislike.comments);
 127     assert_eq!(0, post_aggs_after_dislike.score);
 128     assert_eq!(1, post_aggs_after_dislike.upvotes);
 129     assert_eq!(1, post_aggs_after_dislike.downvotes);
 130
 131     // Remove the parent comment
 132     Comment::delete(&conn, inserted_comment.id).unwrap();
 133     let after_comment_delete = PostAggregates::read(&conn, inserted_post.id).unwrap();
 134     assert_eq!(0, after_comment_delete.comments);
 135     assert_eq!(0, after_comment_delete.score);
 136     assert_eq!(1, after_comment_delete.upvotes);
 137     assert_eq!(1, after_comment_delete.downvotes);
 138
 139     // Remove the first post like
 140     PostLike::remove(&conn, inserted_person.id, inserted_post.id).unwrap();
 141     let after_like_remove = PostAggregates::read(&conn, inserted_post.id).unwrap();
 142     assert_eq!(0, after_like_remove.comments);
 143     assert_eq!(-1, after_like_remove.score);
 144     assert_eq!(0, after_like_remove.upvotes);
 145     assert_eq!(1, after_like_remove.downvotes);
 146
 147     // This should delete all the associated rows, and fire triggers
 148     Person::delete(&conn, another_inserted_person.id).unwrap();
 149     let person_num_deleted = Person::delete(&conn, inserted_person.id).unwrap();
 150     assert_eq!(1, person_num_deleted);
 151
 152     // Delete the community
 153     let community_num_deleted = Community::delete(&conn, inserted_community.id).unwrap();
 154     assert_eq!(1, community_num_deleted);
 155
 156     // Should be none found, since the creator was deleted
 157     let after_delete = PostAggregates::read(&conn, inserted_post.id);
 158     assert!(after_delete.is_err());
 159   }
 160 }