lemmy/crates/db_schema/src/aggregates/post_aggregates.rs

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use crate::{
aggregates::structs::PostAggregates,
newtypes::PostId,
schema::post_aggregates,
utils::{get_conn, DbPool},
};
use diesel::{result::Error, ExpressionMethods, QueryDsl};
use diesel_async::RunQueryDsl;
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impl PostAggregates {
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pub async fn read(pool: &DbPool, post_id: PostId) -> Result<Self, Error> {
let conn = &mut get_conn(pool).await?;
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post_aggregates::table
.filter(post_aggregates::post_id.eq(post_id))
.first::<Self>(conn)
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.await
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}
}
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#[cfg(test)]
mod tests {
use crate::{
aggregates::post_aggregates::PostAggregates,
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source::{
comment::{Comment, CommentInsertForm},
community::{Community, CommunityInsertForm},
instance::Instance,
person::{Person, PersonInsertForm},
post::{Post, PostInsertForm, PostLike, PostLikeForm},
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},
traits::{Crud, Likeable},
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utils::build_db_pool_for_tests,
};
use serial_test::serial;
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#[tokio::test]
#[serial]
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async fn test_crud() {
let pool = &build_db_pool_for_tests().await;
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let inserted_instance = Instance::read_or_create(pool, "my_domain.tld".to_string())
.await
.unwrap();
let new_person = PersonInsertForm::builder()
.name("thommy_community_agg".into())
.public_key("pubkey".to_string())
.instance_id(inserted_instance.id)
.build();
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let inserted_person = Person::create(pool, &new_person).await.unwrap();
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let another_person = PersonInsertForm::builder()
.name("jerry_community_agg".into())
.public_key("pubkey".to_string())
.instance_id(inserted_instance.id)
.build();
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let another_inserted_person = Person::create(pool, &another_person).await.unwrap();
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let new_community = CommunityInsertForm::builder()
.name("TIL_community_agg".into())
.title("nada".to_owned())
.public_key("pubkey".to_string())
.instance_id(inserted_instance.id)
.build();
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let inserted_community = Community::create(pool, &new_community).await.unwrap();
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let new_post = PostInsertForm::builder()
.name("A test post".into())
.creator_id(inserted_person.id)
.community_id(inserted_community.id)
.build();
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let inserted_post = Post::create(pool, &new_post).await.unwrap();
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let comment_form = CommentInsertForm::builder()
.content("A test comment".into())
.creator_id(inserted_person.id)
.post_id(inserted_post.id)
.build();
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let inserted_comment = Comment::create(pool, &comment_form, None).await.unwrap();
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let child_comment_form = CommentInsertForm::builder()
.content("A test comment".into())
.creator_id(inserted_person.id)
.post_id(inserted_post.id)
.build();
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let inserted_child_comment =
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Comment::create(pool, &child_comment_form, Some(&inserted_comment.path))
.await
.unwrap();
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let post_like = PostLikeForm {
post_id: inserted_post.id,
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person_id: inserted_person.id,
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score: 1,
};
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PostLike::like(pool, &post_like).await.unwrap();
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let post_aggs_before_delete = PostAggregates::read(pool, inserted_post.id).await.unwrap();
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assert_eq!(2, post_aggs_before_delete.comments);
assert_eq!(1, post_aggs_before_delete.score);
assert_eq!(1, post_aggs_before_delete.upvotes);
assert_eq!(0, post_aggs_before_delete.downvotes);
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// Add a post dislike from the other person
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let post_dislike = PostLikeForm {
post_id: inserted_post.id,
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person_id: another_inserted_person.id,
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score: -1,
};
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PostLike::like(pool, &post_dislike).await.unwrap();
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let post_aggs_after_dislike = PostAggregates::read(pool, inserted_post.id).await.unwrap();
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assert_eq!(2, post_aggs_after_dislike.comments);
assert_eq!(0, post_aggs_after_dislike.score);
assert_eq!(1, post_aggs_after_dislike.upvotes);
assert_eq!(1, post_aggs_after_dislike.downvotes);
// Remove the comments
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Comment::delete(pool, inserted_comment.id).await.unwrap();
Comment::delete(pool, inserted_child_comment.id)
.await
.unwrap();
let after_comment_delete = PostAggregates::read(pool, inserted_post.id).await.unwrap();
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assert_eq!(0, after_comment_delete.comments);
assert_eq!(0, after_comment_delete.score);
assert_eq!(1, after_comment_delete.upvotes);
assert_eq!(1, after_comment_delete.downvotes);
// Remove the first post like
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PostLike::remove(pool, inserted_person.id, inserted_post.id)
.await
.unwrap();
let after_like_remove = PostAggregates::read(pool, inserted_post.id).await.unwrap();
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assert_eq!(0, after_like_remove.comments);
assert_eq!(-1, after_like_remove.score);
assert_eq!(0, after_like_remove.upvotes);
assert_eq!(1, after_like_remove.downvotes);
// This should delete all the associated rows, and fire triggers
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Person::delete(pool, another_inserted_person.id)
.await
.unwrap();
let person_num_deleted = Person::delete(pool, inserted_person.id).await.unwrap();
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assert_eq!(1, person_num_deleted);
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// Delete the community
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let community_num_deleted = Community::delete(pool, inserted_community.id)
.await
.unwrap();
assert_eq!(1, community_num_deleted);
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// Should be none found, since the creator was deleted
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let after_delete = PostAggregates::read(pool, inserted_post.id).await;
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assert!(after_delete.is_err());
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Instance::delete(pool, inserted_instance.id).await.unwrap();
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}
}