crates/db_views/src/comment_view.rs

   1 use crate::structs::CommentView;
   2 use diesel::{dsl::*, result::Error, *};
   3 use diesel_ltree::{nlevel, subpath, Ltree, LtreeExtensions};
   4 use lemmy_db_schema::{
   5   aggregates::structs::CommentAggregates,
   6   newtypes::{CommentId, CommunityId, DbUrl, LocalUserId, PersonId, PostId},
   7   schema::{
   8     comment,
   9     comment_aggregates,
  10     comment_like,
  11     comment_saved,
  12     community,
  13     community_block,
  14     community_follower,
  15     community_person_ban,
  16     local_user_language,
  17     person,
  18     person_block,
  19     post,
  20   },
  21   source::{
  22     comment::{Comment, CommentSaved},
  23     community::{Community, CommunityFollower, CommunityPersonBan, CommunitySafe},
  24     local_user::LocalUser,
  25     person::{Person, PersonSafe},
  26     person_block::PersonBlock,
  27     post::Post,
  28   },
  29   traits::{ToSafe, ViewToVec},
  30   utils::{functions::hot_rank, fuzzy_search, limit_and_offset_unlimited},
  31   CommentSortType,
  32   ListingType,
  33 };
  34 use typed_builder::TypedBuilder;
  35
  36 type CommentViewTuple = (
  37   Comment,
  38   PersonSafe,
  39   Post,
  40   CommunitySafe,
  41   CommentAggregates,
  42   Option<CommunityPersonBan>,
  43   Option<CommunityFollower>,
  44   Option<CommentSaved>,
  45   Option<PersonBlock>,
  46   Option<i16>,
  47 );
  48
  49 impl CommentView {
  50   pub fn read(
  51     conn: &mut PgConnection,
  52     comment_id: CommentId,
  53     my_person_id: Option<PersonId>,
  54   ) -> Result<Self, Error> {
  55     // The left join below will return None in this case
  56     let person_id_join = my_person_id.unwrap_or(PersonId(-1));
  57
  58     let (
  59       comment,
  60       creator,
  61       post,
  62       community,
  63       counts,
  64       creator_banned_from_community,
  65       follower,
  66       saved,
  67       creator_blocked,
  68       comment_like,
  69     ) = comment::table
  70       .find(comment_id)
  71       .inner_join(person::table)
  72       .inner_join(post::table)
  73       .inner_join(community::table.on(post::community_id.eq(community::id)))
  74       .inner_join(comment_aggregates::table)
  75       .left_join(
  76         community_person_ban::table.on(
  77           community::id
  78             .eq(community_person_ban::community_id)
  79             .and(community_person_ban::person_id.eq(comment::creator_id))
  80             .and(
  81               community_person_ban::expires
  82                 .is_null()
  83                 .or(community_person_ban::expires.gt(now)),
  84             ),
  85         ),
  86       )
  87       .left_join(
  88         community_follower::table.on(
  89           post::community_id
  90             .eq(community_follower::community_id)
  91             .and(community_follower::person_id.eq(person_id_join)),
  92         ),
  93       )
  94       .left_join(
  95         comment_saved::table.on(
  96           comment::id
  97             .eq(comment_saved::comment_id)
  98             .and(comment_saved::person_id.eq(person_id_join)),
  99         ),
 100       )
 101       .left_join(
 102         person_block::table.on(
 103           comment::creator_id
 104             .eq(person_block::target_id)
 105             .and(person_block::person_id.eq(person_id_join)),
 106         ),
 107       )
 108       .left_join(
 109         comment_like::table.on(
 110           comment::id
 111             .eq(comment_like::comment_id)
 112             .and(comment_like::person_id.eq(person_id_join)),
 113         ),
 114       )
 115       .select((
 116         comment::all_columns,
 117         Person::safe_columns_tuple(),
 118         post::all_columns,
 119         Community::safe_columns_tuple(),
 120         comment_aggregates::all_columns,
 121         community_person_ban::all_columns.nullable(),
 122         community_follower::all_columns.nullable(),
 123         comment_saved::all_columns.nullable(),
 124         person_block::all_columns.nullable(),
 125         comment_like::score.nullable(),
 126       ))
 127       .first::<CommentViewTuple>(conn)?;
 128
 129     // If a person is given, then my_vote, if None, should be 0, not null
 130     // Necessary to differentiate between other person's votes
 131     let my_vote = if my_person_id.is_some() && comment_like.is_none() {
 132       Some(0)
 133     } else {
 134       comment_like
 135     };
 136
 137     Ok(CommentView {
 138       comment,
 139       post,
 140       creator,
 141       community,
 142       counts,
 143       creator_banned_from_community: creator_banned_from_community.is_some(),
 144       subscribed: CommunityFollower::to_subscribed_type(&follower),
 145       saved: saved.is_some(),
 146       creator_blocked: creator_blocked.is_some(),
 147       my_vote,
 148     })
 149   }
 150 }
 151
 152 #[derive(TypedBuilder)]
 153 #[builder(field_defaults(default))]
 154 pub struct CommentQuery<'a> {
 155   #[builder(!default)]
 156   conn: &'a mut PgConnection,
 157   listing_type: Option<ListingType>,
 158   sort: Option<CommentSortType>,
 159   community_id: Option<CommunityId>,
 160   community_actor_id: Option<DbUrl>,
 161   post_id: Option<PostId>,
 162   parent_path: Option<Ltree>,
 163   creator_id: Option<PersonId>,
 164   local_user: Option<&'a LocalUser>,
 165   search_term: Option<String>,
 166   saved_only: Option<bool>,
 167   show_deleted_and_removed: Option<bool>,
 168   page: Option<i64>,
 169   limit: Option<i64>,
 170   max_depth: Option<i32>,
 171 }
 172
 173 impl<'a> CommentQuery<'a> {
 174   pub fn list(self) -> Result<Vec<CommentView>, Error> {
 175     use diesel::dsl::*;
 176
 177     // The left join below will return None in this case
 178     let person_id_join = self.local_user.map(|l| l.person_id).unwrap_or(PersonId(-1));
 179     let local_user_id_join = self.local_user.map(|l| l.id).unwrap_or(LocalUserId(-1));
 180
 181     let mut query = comment::table
 182       .inner_join(person::table)
 183       .inner_join(post::table)
 184       .inner_join(community::table.on(post::community_id.eq(community::id)))
 185       .inner_join(comment_aggregates::table)
 186       .left_join(
 187         community_person_ban::table.on(
 188           community::id
 189             .eq(community_person_ban::community_id)
 190             .and(community_person_ban::person_id.eq(comment::creator_id))
 191             .and(
 192               community_person_ban::expires
 193                 .is_null()
 194                 .or(community_person_ban::expires.gt(now)),
 195             ),
 196         ),
 197       )
 198       .left_join(
 199         community_follower::table.on(
 200           post::community_id
 201             .eq(community_follower::community_id)
 202             .and(community_follower::person_id.eq(person_id_join)),
 203         ),
 204       )
 205       .left_join(
 206         comment_saved::table.on(
 207           comment::id
 208             .eq(comment_saved::comment_id)
 209             .and(comment_saved::person_id.eq(person_id_join)),
 210         ),
 211       )
 212       .left_join(
 213         person_block::table.on(
 214           comment::creator_id
 215             .eq(person_block::target_id)
 216             .and(person_block::person_id.eq(person_id_join)),
 217         ),
 218       )
 219       .left_join(
 220         community_block::table.on(
 221           community::id
 222             .eq(community_block::community_id)
 223             .and(community_block::person_id.eq(person_id_join)),
 224         ),
 225       )
 226       .left_join(
 227         comment_like::table.on(
 228           comment::id
 229             .eq(comment_like::comment_id)
 230             .and(comment_like::person_id.eq(person_id_join)),
 231         ),
 232       )
 233       .left_join(
 234         local_user_language::table.on(
 235           comment::language_id
 236             .eq(local_user_language::language_id)
 237             .and(local_user_language::local_user_id.eq(local_user_id_join)),
 238         ),
 239       )
 240       .select((
 241         comment::all_columns,
 242         Person::safe_columns_tuple(),
 243         post::all_columns,
 244         Community::safe_columns_tuple(),
 245         comment_aggregates::all_columns,
 246         community_person_ban::all_columns.nullable(),
 247         community_follower::all_columns.nullable(),
 248         comment_saved::all_columns.nullable(),
 249         person_block::all_columns.nullable(),
 250         comment_like::score.nullable(),
 251       ))
 252       .into_boxed();
 253
 254     if let Some(creator_id) = self.creator_id {
 255       query = query.filter(comment::creator_id.eq(creator_id));
 256     };
 257
 258     if let Some(post_id) = self.post_id {
 259       query = query.filter(comment::post_id.eq(post_id));
 260     };
 261
 262     if let Some(parent_path) = self.parent_path.as_ref() {
 263       query = query.filter(comment::path.contained_by(parent_path));
 264     };
 265
 266     if let Some(search_term) = self.search_term {
 267       query = query.filter(comment::content.ilike(fuzzy_search(&search_term)));
 268     };
 269
 270     if let Some(listing_type) = self.listing_type {
 271       match listing_type {
 272         ListingType::Subscribed => {
 273           query = query.filter(community_follower::person_id.is_not_null())
 274         } // TODO could be this: and(community_follower::person_id.eq(person_id_join)),
 275         ListingType::Local => {
 276           query = query.filter(community::local.eq(true)).filter(
 277             community::hidden
 278               .eq(false)
 279               .or(community_follower::person_id.eq(person_id_join)),
 280           )
 281         }
 282         ListingType::All => {
 283           query = query.filter(
 284             community::hidden
 285               .eq(false)
 286               .or(community_follower::person_id.eq(person_id_join)),
 287           )
 288         }
 289       }
 290     };
 291
 292     if let Some(community_id) = self.community_id {
 293       query = query.filter(post::community_id.eq(community_id));
 294     }
 295
 296     if let Some(community_actor_id) = self.community_actor_id {
 297       query = query.filter(community::actor_id.eq(community_actor_id))
 298     }
 299
 300     if self.saved_only.unwrap_or(false) {
 301       query = query.filter(comment_saved::id.is_not_null());
 302     }
 303
 304     if !self.show_deleted_and_removed.unwrap_or(true) {
 305       query = query.filter(comment::deleted.eq(false));
 306       query = query.filter(comment::removed.eq(false));
 307     }
 308
 309     if !self.local_user.map(|l| l.show_bot_accounts).unwrap_or(true) {
 310       query = query.filter(person::bot_account.eq(false));
 311     };
 312
 313     if self.local_user.is_some() {
 314       // Filter out the rows with missing languages
 315       query = query.filter(local_user_language::id.is_not_null());
 316
 317       // Don't show blocked communities or persons
 318       query = query.filter(community_block::person_id.is_null());
 319       query = query.filter(person_block::person_id.is_null());
 320     }
 321
 322     // A Max depth given means its a tree fetch
 323     let (limit, offset) = if let Some(max_depth) = self.max_depth {
 324       let depth_limit = if let Some(parent_path) = self.parent_path.as_ref() {
 325         parent_path.0.split('.').count() as i32 + max_depth
 326         // Add one because of root "0"
 327       } else {
 328         max_depth + 1
 329       };
 330
 331       query = query.filter(nlevel(comment::path).le(depth_limit));
 332
 333       // Always order by the parent path first
 334       query = query.order_by(subpath(comment::path, 0, -1));
 335
 336       // TODO limit question. Limiting does not work for comment threads ATM, only max_depth
 337       // For now, don't do any limiting for tree fetches
 338       // https://stackoverflow.com/questions/72983614/postgres-ltree-how-to-limit-the-max-number-of-children-at-any-given-level
 339
 340       // Don't use the regular error-checking one, many more comments must ofter be fetched.
 341       // This does not work for comment trees, and the limit should be manually set to a high number
 342       //
 343       // If a max depth is given, then you know its a tree fetch, and limits should be ignored
 344       (i64::MAX, 0)
 345     } else {
 346       limit_and_offset_unlimited(self.page, self.limit)
 347     };
 348
 349     query = match self.sort.unwrap_or(CommentSortType::Hot) {
 350       CommentSortType::Hot => query
 351         .then_order_by(hot_rank(comment_aggregates::score, comment_aggregates::published).desc())
 352         .then_order_by(comment_aggregates::published.desc()),
 353       CommentSortType::New => query.then_order_by(comment::published.desc()),
 354       CommentSortType::Old => query.then_order_by(comment::published.asc()),
 355       CommentSortType::Top => query.order_by(comment_aggregates::score.desc()),
 356     };
 357
 358     // Note: deleted and removed comments are done on the front side
 359     let res = query
 360       .limit(limit)
 361       .offset(offset)
 362       .load::<CommentViewTuple>(self.conn)?;
 363
 364     Ok(CommentView::from_tuple_to_vec(res))
 365   }
 366 }
 367
 368 impl ViewToVec for CommentView {
 369   type DbTuple = CommentViewTuple;
 370   fn from_tuple_to_vec(items: Vec<Self::DbTuple>) -> Vec<Self> {
 371     items
 372       .into_iter()
 373       .map(|a| Self {
 374         comment: a.0,
 375         creator: a.1,
 376         post: a.2,
 377         community: a.3,
 378         counts: a.4,
 379         creator_banned_from_community: a.5.is_some(),
 380         subscribed: CommunityFollower::to_subscribed_type(&a.6),
 381         saved: a.7.is_some(),
 382         creator_blocked: a.8.is_some(),
 383         my_vote: a.9,
 384       })
 385       .collect::<Vec<Self>>()
 386   }
 387 }
 388
 389 #[cfg(test)]
 390 mod tests {
 391   use crate::comment_view::*;
 392   use lemmy_db_schema::{
 393     aggregates::structs::CommentAggregates,
 394     newtypes::LanguageId,
 395     source::{
 396       actor_language::LocalUserLanguage,
 397       comment::*,
 398       community::*,
 399       language::Language,
 400       local_user::LocalUserForm,
 401       person::*,
 402       person_block::PersonBlockForm,
 403       post::*,
 404     },
 405     traits::{Blockable, Crud, Likeable},
 406     utils::establish_unpooled_connection,
 407     SubscribedType,
 408   };
 409   use serial_test::serial;
 410
 411   struct Data {
 412     inserted_comment_0: Comment,
 413     inserted_comment_1: Comment,
 414     inserted_comment_2: Comment,
 415     inserted_post: Post,
 416     inserted_person: Person,
 417     inserted_local_user: LocalUser,
 418     inserted_person_2: Person,
 419     inserted_community: Community,
 420   }
 421
 422   fn init_data(conn: &mut PgConnection) -> Data {
 423     let new_person = PersonForm {
 424       name: "timmy".into(),
 425       public_key: Some("pubkey".to_string()),
 426       ..PersonForm::default()
 427     };
 428     let inserted_person = Person::create(conn, &new_person).unwrap();
 429     let local_user_form = LocalUserForm {
 430       person_id: Some(inserted_person.id),
 431       password_encrypted: Some("".to_string()),
 432       ..Default::default()
 433     };
 434     let inserted_local_user = LocalUser::create(conn, &local_user_form).unwrap();
 435
 436     let new_person_2 = PersonForm {
 437       name: "sara".into(),
 438       public_key: Some("pubkey".to_string()),
 439       ..PersonForm::default()
 440     };
 441     let inserted_person_2 = Person::create(conn, &new_person_2).unwrap();
 442
 443     let new_community = CommunityForm {
 444       name: "test community 5".to_string(),
 445       title: "nada".to_owned(),
 446       public_key: Some("pubkey".to_string()),
 447       ..CommunityForm::default()
 448     };
 449
 450     let inserted_community = Community::create(conn, &new_community).unwrap();
 451
 452     let new_post = PostForm {
 453       name: "A test post 2".into(),
 454       creator_id: inserted_person.id,
 455       community_id: inserted_community.id,
 456       ..PostForm::default()
 457     };
 458
 459     let inserted_post = Post::create(conn, &new_post).unwrap();
 460
 461     // Create a comment tree with this hierarchy
 462     //       0
 463     //     \     \
 464     //    1      2
 465     //    \
 466     //  3  4
 467     //     \
 468     //     5
 469     let comment_form_0 = CommentForm {
 470       content: "Comment 0".into(),
 471       creator_id: inserted_person.id,
 472       post_id: inserted_post.id,
 473       ..CommentForm::default()
 474     };
 475
 476     let inserted_comment_0 = Comment::create(conn, &comment_form_0, None).unwrap();
 477
 478     let comment_form_1 = CommentForm {
 479       content: "Comment 1, A test blocked comment".into(),
 480       creator_id: inserted_person_2.id,
 481       post_id: inserted_post.id,
 482       ..CommentForm::default()
 483     };
 484
 485     let inserted_comment_1 =
 486       Comment::create(conn, &comment_form_1, Some(&inserted_comment_0.path)).unwrap();
 487
 488     let finnish_id = Language::read_id_from_code(conn, "fi").unwrap();
 489     let comment_form_2 = CommentForm {
 490       content: "Comment 2".into(),
 491       creator_id: inserted_person.id,
 492       post_id: inserted_post.id,
 493       language_id: Some(finnish_id),
 494       ..CommentForm::default()
 495     };
 496
 497     let inserted_comment_2 =
 498       Comment::create(conn, &comment_form_2, Some(&inserted_comment_0.path)).unwrap();
 499
 500     let comment_form_3 = CommentForm {
 501       content: "Comment 3".into(),
 502       creator_id: inserted_person.id,
 503       post_id: inserted_post.id,
 504       ..CommentForm::default()
 505     };
 506
 507     let _inserted_comment_3 =
 508       Comment::create(conn, &comment_form_3, Some(&inserted_comment_1.path)).unwrap();
 509
 510     let polish_id = Language::read_id_from_code(conn, "pl").unwrap();
 511     let comment_form_4 = CommentForm {
 512       content: "Comment 4".into(),
 513       creator_id: inserted_person.id,
 514       post_id: inserted_post.id,
 515       language_id: Some(polish_id),
 516       ..CommentForm::default()
 517     };
 518
 519     let inserted_comment_4 =
 520       Comment::create(conn, &comment_form_4, Some(&inserted_comment_1.path)).unwrap();
 521
 522     let comment_form_5 = CommentForm {
 523       content: "Comment 5".into(),
 524       creator_id: inserted_person.id,
 525       post_id: inserted_post.id,
 526       ..CommentForm::default()
 527     };
 528
 529     let _inserted_comment_5 =
 530       Comment::create(conn, &comment_form_5, Some(&inserted_comment_4.path)).unwrap();
 531
 532     let timmy_blocks_sara_form = PersonBlockForm {
 533       person_id: inserted_person.id,
 534       target_id: inserted_person_2.id,
 535     };
 536
 537     let inserted_block = PersonBlock::block(conn, &timmy_blocks_sara_form).unwrap();
 538
 539     let expected_block = PersonBlock {
 540       id: inserted_block.id,
 541       person_id: inserted_person.id,
 542       target_id: inserted_person_2.id,
 543       published: inserted_block.published,
 544     };
 545     assert_eq!(expected_block, inserted_block);
 546
 547     let comment_like_form = CommentLikeForm {
 548       comment_id: inserted_comment_0.id,
 549       post_id: inserted_post.id,
 550       person_id: inserted_person.id,
 551       score: 1,
 552     };
 553
 554     let _inserted_comment_like = CommentLike::like(conn, &comment_like_form).unwrap();
 555
 556     Data {
 557       inserted_comment_0,
 558       inserted_comment_1,
 559       inserted_comment_2,
 560       inserted_post,
 561       inserted_person,
 562       inserted_local_user,
 563       inserted_person_2,
 564       inserted_community,
 565     }
 566   }
 567
 568   #[test]
 569   #[serial]
 570   fn test_crud() {
 571     let conn = &mut establish_unpooled_connection();
 572     let data = init_data(conn);
 573
 574     let expected_comment_view_no_person = expected_comment_view(&data, conn);
 575
 576     let mut expected_comment_view_with_person = expected_comment_view_no_person.to_owned();
 577     expected_comment_view_with_person.my_vote = Some(1);
 578
 579     let read_comment_views_no_person = CommentQuery::builder()
 580       .conn(conn)
 581       .post_id(Some(data.inserted_post.id))
 582       .build()
 583       .list()
 584       .unwrap();
 585
 586     assert_eq!(
 587       expected_comment_view_no_person,
 588       read_comment_views_no_person[0]
 589     );
 590
 591     let read_comment_views_with_person = CommentQuery::builder()
 592       .conn(conn)
 593       .post_id(Some(data.inserted_post.id))
 594       .local_user(Some(&data.inserted_local_user))
 595       .build()
 596       .list()
 597       .unwrap();
 598
 599     assert_eq!(
 600       expected_comment_view_with_person,
 601       read_comment_views_with_person[0]
 602     );
 603
 604     // Make sure its 1, not showing the blocked comment
 605     assert_eq!(5, read_comment_views_with_person.len());
 606
 607     let read_comment_from_blocked_person = CommentView::read(
 608       conn,
 609       data.inserted_comment_1.id,
 610       Some(data.inserted_person.id),
 611     )
 612     .unwrap();
 613
 614     // Make sure block set the creator blocked
 615     assert!(read_comment_from_blocked_person.creator_blocked);
 616
 617     cleanup(data, conn);
 618   }
 619
 620   #[test]
 621   #[serial]
 622   fn test_comment_tree() {
 623     let conn = &mut establish_unpooled_connection();
 624     let data = init_data(conn);
 625
 626     let top_path = data.inserted_comment_0.path.clone();
 627     let read_comment_views_top_path = CommentQuery::builder()
 628       .conn(conn)
 629       .post_id(Some(data.inserted_post.id))
 630       .parent_path(Some(top_path))
 631       .build()
 632       .list()
 633       .unwrap();
 634
 635     let child_path = data.inserted_comment_1.path.clone();
 636     let read_comment_views_child_path = CommentQuery::builder()
 637       .conn(conn)
 638       .post_id(Some(data.inserted_post.id))
 639       .parent_path(Some(child_path))
 640       .build()
 641       .list()
 642       .unwrap();
 643
 644     // Make sure the comment parent-limited fetch is correct
 645     assert_eq!(6, read_comment_views_top_path.len());
 646     assert_eq!(4, read_comment_views_child_path.len());
 647
 648     // Make sure it contains the parent, but not the comment from the other tree
 649     let child_comments = read_comment_views_child_path
 650       .into_iter()
 651       .map(|c| c.comment)
 652       .collect::<Vec<Comment>>();
 653     assert!(child_comments.contains(&data.inserted_comment_1));
 654     assert!(!child_comments.contains(&data.inserted_comment_2));
 655
 656     let read_comment_views_top_max_depth = CommentQuery::builder()
 657       .conn(conn)
 658       .post_id(Some(data.inserted_post.id))
 659       .max_depth(Some(1))
 660       .build()
 661       .list()
 662       .unwrap();
 663
 664     // Make sure a depth limited one only has the top comment
 665     assert_eq!(
 666       expected_comment_view(&data, conn),
 667       read_comment_views_top_max_depth[0]
 668     );
 669     assert_eq!(1, read_comment_views_top_max_depth.len());
 670
 671     let child_path = data.inserted_comment_1.path.clone();
 672     let read_comment_views_parent_max_depth = CommentQuery::builder()
 673       .conn(conn)
 674       .post_id(Some(data.inserted_post.id))
 675       .parent_path(Some(child_path))
 676       .max_depth(Some(1))
 677       .sort(Some(CommentSortType::New))
 678       .build()
 679       .list()
 680       .unwrap();
 681
 682     // Make sure a depth limited one, and given child comment 1, has 3
 683     assert!(read_comment_views_parent_max_depth[2]
 684       .comment
 685       .content
 686       .eq("Comment 3"));
 687     assert_eq!(3, read_comment_views_parent_max_depth.len());
 688
 689     cleanup(data, conn);
 690   }
 691
 692   #[test]
 693   #[serial]
 694   fn test_languages() {
 695     let conn = &mut establish_unpooled_connection();
 696     let data = init_data(conn);
 697
 698     // by default, user has all languages enabled and should see all comments
 699     // (except from blocked user)
 700     let all_languages = CommentQuery::builder()
 701       .conn(conn)
 702       .local_user(Some(&data.inserted_local_user))
 703       .build()
 704       .list()
 705       .unwrap();
 706     assert_eq!(5, all_languages.len());
 707
 708     // change user lang to finnish, should only show single finnish comment
 709     let finnish_id = Language::read_id_from_code(conn, "fi").unwrap();
 710     LocalUserLanguage::update(conn, vec![finnish_id], data.inserted_local_user.id).unwrap();
 711     let finnish_comment = CommentQuery::builder()
 712       .conn(conn)
 713       .local_user(Some(&data.inserted_local_user))
 714       .build()
 715       .list()
 716       .unwrap();
 717     assert_eq!(1, finnish_comment.len());
 718     assert_eq!(
 719       data.inserted_comment_2.content,
 720       finnish_comment[0].comment.content
 721     );
 722     assert_eq!(finnish_id, finnish_comment[0].comment.language_id);
 723
 724     // now show all comments with undetermined language (which is the default value)
 725     let undetermined_id = Language::read_id_from_code(conn, "und").unwrap();
 726     LocalUserLanguage::update(conn, vec![undetermined_id], data.inserted_local_user.id).unwrap();
 727     let undetermined_comment = CommentQuery::builder()
 728       .conn(conn)
 729       .local_user(Some(&data.inserted_local_user))
 730       .build()
 731       .list()
 732       .unwrap();
 733     assert_eq!(3, undetermined_comment.len());
 734
 735     cleanup(data, conn);
 736   }
 737
 738   fn cleanup(data: Data, conn: &mut PgConnection) {
 739     CommentLike::remove(conn, data.inserted_person.id, data.inserted_comment_0.id).unwrap();
 740     Comment::delete(conn, data.inserted_comment_0.id).unwrap();
 741     Comment::delete(conn, data.inserted_comment_1.id).unwrap();
 742     Post::delete(conn, data.inserted_post.id).unwrap();
 743     Community::delete(conn, data.inserted_community.id).unwrap();
 744     Person::delete(conn, data.inserted_person.id).unwrap();
 745     Person::delete(conn, data.inserted_person_2.id).unwrap();
 746   }
 747
 748   fn expected_comment_view(data: &Data, conn: &mut PgConnection) -> CommentView {
 749     let agg = CommentAggregates::read(conn, data.inserted_comment_0.id).unwrap();
 750     CommentView {
 751       creator_banned_from_community: false,
 752       my_vote: None,
 753       subscribed: SubscribedType::NotSubscribed,
 754       saved: false,
 755       creator_blocked: false,
 756       comment: Comment {
 757         id: data.inserted_comment_0.id,
 758         content: "Comment 0".into(),
 759         creator_id: data.inserted_person.id,
 760         post_id: data.inserted_post.id,
 761         removed: false,
 762         deleted: false,
 763         published: data.inserted_comment_0.published,
 764         ap_id: data.inserted_comment_0.ap_id.clone(),
 765         updated: None,
 766         local: true,
 767         distinguished: false,
 768         path: data.inserted_comment_0.to_owned().path,
 769         language_id: LanguageId(0),
 770       },
 771       creator: PersonSafe {
 772         id: data.inserted_person.id,
 773         name: "timmy".into(),
 774         display_name: None,
 775         published: data.inserted_person.published,
 776         avatar: None,
 777         actor_id: data.inserted_person.actor_id.to_owned(),
 778         local: true,
 779         banned: false,
 780         deleted: false,
 781         admin: false,
 782         bot_account: false,
 783         bio: None,
 784         banner: None,
 785         updated: None,
 786         inbox_url: data.inserted_person.inbox_url.to_owned(),
 787         shared_inbox_url: None,
 788         matrix_user_id: None,
 789         ban_expires: None,
 790       },
 791       post: Post {
 792         id: data.inserted_post.id,
 793         name: data.inserted_post.name.to_owned(),
 794         creator_id: data.inserted_person.id,
 795         url: None,
 796         body: None,
 797         published: data.inserted_post.published,
 798         updated: None,
 799         community_id: data.inserted_community.id,
 800         removed: false,
 801         deleted: false,
 802         locked: false,
 803         stickied: false,
 804         nsfw: false,
 805         embed_title: None,
 806         embed_description: None,
 807         embed_video_url: None,
 808         thumbnail_url: None,
 809         ap_id: data.inserted_post.ap_id.to_owned(),
 810         local: true,
 811         language_id: Default::default(),
 812       },
 813       community: CommunitySafe {
 814         id: data.inserted_community.id,
 815         name: "test community 5".to_string(),
 816         icon: None,
 817         removed: false,
 818         deleted: false,
 819         nsfw: false,
 820         actor_id: data.inserted_community.actor_id.to_owned(),
 821         local: true,
 822         title: "nada".to_owned(),
 823         description: None,
 824         updated: None,
 825         banner: None,
 826         hidden: false,
 827         posting_restricted_to_mods: false,
 828         published: data.inserted_community.published,
 829       },
 830       counts: CommentAggregates {
 831         id: agg.id,
 832         comment_id: data.inserted_comment_0.id,
 833         score: 1,
 834         upvotes: 1,
 835         downvotes: 0,
 836         published: agg.published,
 837         child_count: 5,
 838       },
 839     }
 840   }
 841 }