crates/db_queries/src/aggregates/community_aggregates.rs

   1 use diesel::{result::Error, *};
   2 use lemmy_db_schema::{schema::community_aggregates, CommunityId};
   3 use serde::{Deserialize, Serialize};
   4
   5 #[derive(
   6   Queryable, Associations, Identifiable, PartialEq, Debug, Serialize, Deserialize, Clone,
   7 )]
   8 #[table_name = "community_aggregates"]
   9 pub struct CommunityAggregates {
  10   pub id: i32,
  11   pub community_id: CommunityId,
  12   pub subscribers: i64,
  13   pub posts: i64,
  14   pub comments: i64,
  15   pub published: chrono::NaiveDateTime,
  16   pub users_active_day: i64,
  17   pub users_active_week: i64,
  18   pub users_active_month: i64,
  19   pub users_active_half_year: i64,
  20 }
  21
  22 impl CommunityAggregates {
  23   pub fn read(conn: &PgConnection, community_id: CommunityId) -> Result<Self, Error> {
  24     community_aggregates::table
  25       .filter(community_aggregates::community_id.eq(community_id))
  26       .first::<Self>(conn)
  27   }
  28 }
  29
  30 #[cfg(test)]
  31 mod tests {
  32   use crate::{
  33     aggregates::community_aggregates::CommunityAggregates,
  34     establish_unpooled_connection,
  35     Crud,
  36     Followable,
  37   };
  38   use lemmy_db_schema::source::{
  39     comment::{Comment, CommentForm},
  40     community::{Community, CommunityFollower, CommunityFollowerForm, CommunityForm},
  41     person::{Person, PersonForm},
  42     post::{Post, PostForm},
  43   };
  44   use serial_test::serial;
  45
  46   #[test]
  47   #[serial]
  48   fn test_crud() {
  49     let conn = establish_unpooled_connection();
  50
  51     let new_person = PersonForm {
  52       name: "thommy_community_agg".into(),
  53       ..PersonForm::default()
  54     };
  55
  56     let inserted_person = Person::create(&conn, &new_person).unwrap();
  57
  58     let another_person = PersonForm {
  59       name: "jerry_community_agg".into(),
  60       ..PersonForm::default()
  61     };
  62
  63     let another_inserted_person = Person::create(&conn, &another_person).unwrap();
  64
  65     let new_community = CommunityForm {
  66       name: "TIL_community_agg".into(),
  67       title: "nada".to_owned(),
  68       ..CommunityForm::default()
  69     };
  70
  71     let inserted_community = Community::create(&conn, &new_community).unwrap();
  72
  73     let another_community = CommunityForm {
  74       name: "TIL_community_agg_2".into(),
  75       title: "nada".to_owned(),
  76       ..CommunityForm::default()
  77     };
  78
  79     let another_inserted_community = Community::create(&conn, &another_community).unwrap();
  80
  81     let first_person_follow = CommunityFollowerForm {
  82       community_id: inserted_community.id,
  83       person_id: inserted_person.id,
  84       pending: false,
  85     };
  86
  87     CommunityFollower::follow(&conn, &first_person_follow).unwrap();
  88
  89     let second_person_follow = CommunityFollowerForm {
  90       community_id: inserted_community.id,
  91       person_id: another_inserted_person.id,
  92       pending: false,
  93     };
  94
  95     CommunityFollower::follow(&conn, &second_person_follow).unwrap();
  96
  97     let another_community_follow = CommunityFollowerForm {
  98       community_id: another_inserted_community.id,
  99       person_id: inserted_person.id,
 100       pending: false,
 101     };
 102
 103     CommunityFollower::follow(&conn, &another_community_follow).unwrap();
 104
 105     let new_post = PostForm {
 106       name: "A test post".into(),
 107       creator_id: inserted_person.id,
 108       community_id: inserted_community.id,
 109       ..PostForm::default()
 110     };
 111
 112     let inserted_post = Post::create(&conn, &new_post).unwrap();
 113
 114     let comment_form = CommentForm {
 115       content: "A test comment".into(),
 116       creator_id: inserted_person.id,
 117       post_id: inserted_post.id,
 118       ..CommentForm::default()
 119     };
 120
 121     let inserted_comment = Comment::create(&conn, &comment_form).unwrap();
 122
 123     let child_comment_form = CommentForm {
 124       content: "A test comment".into(),
 125       creator_id: inserted_person.id,
 126       post_id: inserted_post.id,
 127       parent_id: Some(inserted_comment.id),
 128       ..CommentForm::default()
 129     };
 130
 131     let _inserted_child_comment = Comment::create(&conn, &child_comment_form).unwrap();
 132
 133     let community_aggregates_before_delete =
 134       CommunityAggregates::read(&conn, inserted_community.id).unwrap();
 135
 136     assert_eq!(2, community_aggregates_before_delete.subscribers);
 137     assert_eq!(1, community_aggregates_before_delete.posts);
 138     assert_eq!(2, community_aggregates_before_delete.comments);
 139
 140     // Test the other community
 141     let another_community_aggs =
 142       CommunityAggregates::read(&conn, another_inserted_community.id).unwrap();
 143     assert_eq!(1, another_community_aggs.subscribers);
 144     assert_eq!(0, another_community_aggs.posts);
 145     assert_eq!(0, another_community_aggs.comments);
 146
 147     // Unfollow test
 148     CommunityFollower::unfollow(&conn, &second_person_follow).unwrap();
 149     let after_unfollow = CommunityAggregates::read(&conn, inserted_community.id).unwrap();
 150     assert_eq!(1, after_unfollow.subscribers);
 151
 152     // Follow again just for the later tests
 153     CommunityFollower::follow(&conn, &second_person_follow).unwrap();
 154     let after_follow_again = CommunityAggregates::read(&conn, inserted_community.id).unwrap();
 155     assert_eq!(2, after_follow_again.subscribers);
 156
 157     // Remove a parent comment (the comment count should also be 0)
 158     Post::delete(&conn, inserted_post.id).unwrap();
 159     let after_parent_post_delete = CommunityAggregates::read(&conn, inserted_community.id).unwrap();
 160     assert_eq!(0, after_parent_post_delete.comments);
 161     assert_eq!(0, after_parent_post_delete.posts);
 162
 163     // Remove the 2nd person
 164     Person::delete(&conn, another_inserted_person.id).unwrap();
 165     let after_person_delete = CommunityAggregates::read(&conn, inserted_community.id).unwrap();
 166     assert_eq!(1, after_person_delete.subscribers);
 167
 168     // This should delete all the associated rows, and fire triggers
 169     let person_num_deleted = Person::delete(&conn, inserted_person.id).unwrap();
 170     assert_eq!(1, person_num_deleted);
 171
 172     // Delete the community
 173     let community_num_deleted = Community::delete(&conn, inserted_community.id).unwrap();
 174     assert_eq!(1, community_num_deleted);
 175
 176     let another_community_num_deleted =
 177       Community::delete(&conn, another_inserted_community.id).unwrap();
 178     assert_eq!(1, another_community_num_deleted);
 179
 180     // Should be none found, since the creator was deleted
 181     let after_delete = CommunityAggregates::read(&conn, inserted_community.id);
 182     assert!(after_delete.is_err());
 183   }
 184 }