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