sea_orm/database/
mock.rs

1use crate::{
2    DatabaseConnection, DatabaseConnectionType, DbBackend, EntityTrait, ExecResult,
3    ExecResultHolder, Iden, IdenStatic, Iterable, MockDatabaseConnection, MockDatabaseTrait,
4    ModelTrait, QueryResult, QueryResultRow, SelectA, SelectB, Statement, error::*,
5};
6use sea_query::{Value, ValueType, Values};
7use std::{collections::BTreeMap, sync::Arc};
8use tracing::instrument;
9
10/// Defines a Mock database suitable for testing
11#[derive(Debug)]
12pub struct MockDatabase {
13    db_backend: DbBackend,
14    transaction: Option<OpenTransaction>,
15    transaction_log: Vec<Transaction>,
16    exec_results: Vec<Result<MockExecResult, DbErr>>,
17    query_results: Vec<Result<Vec<MockRow>, DbErr>>,
18}
19
20/// Defines the results obtained from a [MockDatabase]
21#[derive(Clone, Debug, Default)]
22pub struct MockExecResult {
23    /// The last inserted id on auto-increment
24    pub last_insert_id: u64,
25    /// The number of rows affected by the database operation
26    pub rows_affected: u64,
27}
28
29/// Defines the structure of a test Row for the [MockDatabase]
30/// which is just a [BTreeMap]<[String], [Value]>
31#[derive(Clone, Debug)]
32pub struct MockRow {
33    /// The values of the single row
34    pub(crate) values: BTreeMap<String, Value>,
35}
36
37/// A trait to get a [MockRow] from a type useful for testing in the [MockDatabase]
38pub trait IntoMockRow {
39    /// The method to perform this operation
40    fn into_mock_row(self) -> MockRow;
41}
42
43/// Defines a transaction that is has not been committed
44#[derive(Debug)]
45pub struct OpenTransaction {
46    stmts: Vec<Statement>,
47    transaction_depth: usize,
48}
49
50/// Defines a database transaction as it holds a Vec<[Statement]>
51#[derive(Debug, Clone, PartialEq)]
52pub struct Transaction {
53    stmts: Vec<Statement>,
54}
55
56impl MockDatabase {
57    /// Instantiate a mock database with a [DbBackend] to simulate real
58    /// world SQL databases
59    pub fn new(db_backend: DbBackend) -> Self {
60        Self {
61            db_backend,
62            transaction: None,
63            transaction_log: Vec::new(),
64            exec_results: Vec::new(),
65            query_results: Vec::new(),
66        }
67    }
68
69    /// Create a database connection
70    pub fn into_connection(self) -> DatabaseConnection {
71        DatabaseConnectionType::MockDatabaseConnection(Arc::new(MockDatabaseConnection::new(self)))
72            .into()
73    }
74
75    /// Add some [MockExecResult]s to `exec_results`
76    pub fn append_exec_results<I>(mut self, vec: I) -> Self
77    where
78        I: IntoIterator<Item = MockExecResult>,
79    {
80        self.exec_results.extend(vec.into_iter().map(Result::Ok));
81        self
82    }
83
84    /// Add some Values to `query_results`
85    pub fn append_query_results<T, I, II>(mut self, vec: II) -> Self
86    where
87        T: IntoMockRow,
88        I: IntoIterator<Item = T>,
89        II: IntoIterator<Item = I>,
90    {
91        for row in vec.into_iter() {
92            let row = row.into_iter().map(|vec| Ok(vec.into_mock_row())).collect();
93            self.query_results.push(row);
94        }
95        self
96    }
97
98    /// Add some [DbErr]s to `exec_results`
99    pub fn append_exec_errors<I>(mut self, vec: I) -> Self
100    where
101        I: IntoIterator<Item = DbErr>,
102    {
103        self.exec_results.extend(vec.into_iter().map(Result::Err));
104        self
105    }
106
107    /// Add some [DbErr]s to `query_results`
108    pub fn append_query_errors<I>(mut self, vec: I) -> Self
109    where
110        I: IntoIterator<Item = DbErr>,
111    {
112        self.query_results.extend(vec.into_iter().map(Result::Err));
113        self
114    }
115}
116
117impl MockDatabaseTrait for MockDatabase {
118    #[instrument(level = "trace")]
119    fn execute(&mut self, counter: usize, statement: Statement) -> Result<ExecResult, DbErr> {
120        if let Some(transaction) = &mut self.transaction {
121            transaction.push(statement);
122        } else {
123            self.transaction_log.push(Transaction::one(statement));
124        }
125        if counter < self.exec_results.len() {
126            match std::mem::replace(
127                &mut self.exec_results[counter],
128                Err(exec_err("this value has been consumed already")),
129            ) {
130                Ok(result) => Ok(ExecResult {
131                    result: ExecResultHolder::Mock(result),
132                }),
133                Err(err) => Err(err),
134            }
135        } else {
136            Err(exec_err("`exec_results` buffer is empty"))
137        }
138    }
139
140    #[instrument(level = "trace")]
141    fn query(&mut self, counter: usize, statement: Statement) -> Result<Vec<QueryResult>, DbErr> {
142        if let Some(transaction) = &mut self.transaction {
143            transaction.push(statement);
144        } else {
145            self.transaction_log.push(Transaction::one(statement));
146        }
147        if counter < self.query_results.len() {
148            match std::mem::replace(
149                &mut self.query_results[counter],
150                Err(query_err("this value has been consumed already")),
151            ) {
152                Ok(result) => Ok(result
153                    .into_iter()
154                    .map(|row| QueryResult {
155                        row: QueryResultRow::Mock(row),
156                    })
157                    .collect()),
158                Err(err) => Err(err),
159            }
160        } else {
161            Err(query_err("`query_results` buffer is empty."))
162        }
163    }
164
165    #[instrument(level = "trace")]
166    fn begin(&mut self) {
167        match self.transaction.as_mut() {
168            Some(transaction) => transaction.begin_nested(self.db_backend),
169            None => self.transaction = Some(OpenTransaction::init()),
170        }
171    }
172
173    #[instrument(level = "trace")]
174    fn commit(&mut self) {
175        match self.transaction.as_mut() {
176            Some(transaction) => {
177                if transaction.commit(self.db_backend) {
178                    if let Some(transaction) = self.transaction.take() {
179                        self.transaction_log.push(transaction.into_transaction());
180                    }
181                }
182            }
183            None => panic!("There is no open transaction to commit"),
184        }
185    }
186
187    #[instrument(level = "trace")]
188    fn rollback(&mut self) {
189        match self.transaction.as_mut() {
190            Some(transaction) => {
191                if transaction.rollback(self.db_backend) {
192                    if let Some(transaction) = self.transaction.take() {
193                        self.transaction_log.push(transaction.into_transaction());
194                    }
195                }
196            }
197            None => panic!("There is no open transaction to rollback"),
198        }
199    }
200
201    fn drain_transaction_log(&mut self) -> Vec<Transaction> {
202        std::mem::take(&mut self.transaction_log)
203    }
204
205    fn get_database_backend(&self) -> DbBackend {
206        self.db_backend
207    }
208
209    fn ping(&self) -> Result<(), DbErr> {
210        Ok(())
211    }
212}
213
214impl MockRow {
215    /// Get a value from the [MockRow]
216    pub fn try_get<T, I: crate::ColIdx>(&self, index: I) -> Result<T, DbErr>
217    where
218        T: ValueType,
219    {
220        if let Some(index) = index.as_str() {
221            T::try_from(
222                self.values
223                    .get(index)
224                    .ok_or_else(|| query_err(format!("No column for ColIdx {index:?}")))?
225                    .clone(),
226            )
227            .map_err(type_err)
228        } else if let Some(index) = index.as_usize() {
229            let (_, value) = self
230                .values
231                .iter()
232                .nth(*index)
233                .ok_or_else(|| query_err(format!("Column at index {index} not found")))?;
234            T::try_from(value.clone()).map_err(type_err)
235        } else {
236            unreachable!("Missing ColIdx implementation for MockRow");
237        }
238    }
239
240    /// An iterator over the keys and values of a mock row
241    pub fn into_column_value_tuples(self) -> impl Iterator<Item = (String, Value)> {
242        self.values.into_iter()
243    }
244}
245
246impl IntoMockRow for MockRow {
247    fn into_mock_row(self) -> MockRow {
248        self
249    }
250}
251
252impl<M> IntoMockRow for M
253where
254    M: ModelTrait,
255{
256    fn into_mock_row(self) -> MockRow {
257        let mut values = BTreeMap::new();
258        for col in <<M::Entity as EntityTrait>::Column>::iter() {
259            values.insert(col.to_string(), self.get(col));
260        }
261        MockRow { values }
262    }
263}
264
265impl<M, N> IntoMockRow for (M, N)
266where
267    M: ModelTrait,
268    N: ModelTrait,
269{
270    fn into_mock_row(self) -> MockRow {
271        let mut mapped_join = BTreeMap::new();
272
273        for column in <<M as ModelTrait>::Entity as EntityTrait>::Column::iter() {
274            mapped_join.insert(
275                format!("{}{}", SelectA.as_str(), column.as_str()),
276                self.0.get(column),
277            );
278        }
279        for column in <<N as ModelTrait>::Entity as EntityTrait>::Column::iter() {
280            mapped_join.insert(
281                format!("{}{}", SelectB.as_str(), column.as_str()),
282                self.1.get(column),
283            );
284        }
285
286        mapped_join.into_mock_row()
287    }
288}
289
290impl<M, N> IntoMockRow for (M, Option<N>)
291where
292    M: ModelTrait,
293    N: ModelTrait,
294{
295    fn into_mock_row(self) -> MockRow {
296        let mut mapped_join = BTreeMap::new();
297
298        for column in <<M as ModelTrait>::Entity as EntityTrait>::Column::iter() {
299            mapped_join.insert(
300                format!("{}{}", SelectA.as_str(), column.as_str()),
301                self.0.get(column),
302            );
303        }
304        if let Some(b_entity) = self.1 {
305            for column in <<N as ModelTrait>::Entity as EntityTrait>::Column::iter() {
306                mapped_join.insert(
307                    format!("{}{}", SelectB.as_str(), column.as_str()),
308                    b_entity.get(column),
309                );
310            }
311        }
312
313        mapped_join.into_mock_row()
314    }
315}
316
317impl<T> IntoMockRow for BTreeMap<T, Value>
318where
319    T: Into<String>,
320{
321    fn into_mock_row(self) -> MockRow {
322        MockRow {
323            values: self.into_iter().map(|(k, v)| (k.into(), v)).collect(),
324        }
325    }
326}
327
328impl Transaction {
329    /// Get the [Value]s from s raw SQL statement depending on the [DatabaseBackend](crate::DatabaseBackend)
330    pub fn from_sql_and_values<I, T>(db_backend: DbBackend, sql: T, values: I) -> Self
331    where
332        I: IntoIterator<Item = Value>,
333        T: Into<String>,
334    {
335        Self::one(Statement::from_string_values_tuple(
336            db_backend,
337            (sql, Values(values.into_iter().collect())),
338        ))
339    }
340
341    /// Create a Transaction with one statement
342    pub fn one(stmt: Statement) -> Self {
343        Self { stmts: vec![stmt] }
344    }
345
346    /// Create a Transaction with many statements
347    pub fn many<I>(stmts: I) -> Self
348    where
349        I: IntoIterator<Item = Statement>,
350    {
351        Self {
352            stmts: stmts.into_iter().collect(),
353        }
354    }
355
356    /// Wrap each Statement as a single-statement Transaction
357    pub fn wrap<I>(stmts: I) -> Vec<Self>
358    where
359        I: IntoIterator<Item = Statement>,
360    {
361        stmts.into_iter().map(Self::one).collect()
362    }
363
364    /// Get the list of statements
365    pub fn statements(&self) -> &[Statement] {
366        &self.stmts
367    }
368}
369
370impl OpenTransaction {
371    fn init() -> Self {
372        Self {
373            stmts: vec![Statement::from_string(DbBackend::Postgres, "BEGIN")],
374            transaction_depth: 0,
375        }
376    }
377
378    fn begin_nested(&mut self, db_backend: DbBackend) {
379        self.transaction_depth += 1;
380        self.push(Statement::from_string(
381            db_backend,
382            format!("SAVEPOINT savepoint_{}", self.transaction_depth),
383        ));
384    }
385
386    fn commit(&mut self, db_backend: DbBackend) -> bool {
387        if self.transaction_depth == 0 {
388            self.push(Statement::from_string(db_backend, "COMMIT"));
389            true
390        } else {
391            self.push(Statement::from_string(
392                db_backend,
393                format!("RELEASE SAVEPOINT savepoint_{}", self.transaction_depth),
394            ));
395            self.transaction_depth -= 1;
396            false
397        }
398    }
399
400    fn rollback(&mut self, db_backend: DbBackend) -> bool {
401        if self.transaction_depth == 0 {
402            self.push(Statement::from_string(db_backend, "ROLLBACK"));
403            true
404        } else {
405            self.push(Statement::from_string(
406                db_backend,
407                format!("ROLLBACK TO SAVEPOINT savepoint_{}", self.transaction_depth),
408            ));
409            self.transaction_depth -= 1;
410            false
411        }
412    }
413
414    fn push(&mut self, stmt: Statement) {
415        self.stmts.push(stmt);
416    }
417
418    fn into_transaction(self) -> Transaction {
419        match self.transaction_depth {
420            0 => Transaction { stmts: self.stmts },
421            _ => panic!("There is uncommitted nested transaction"),
422        }
423    }
424}
425
426#[cfg(test)]
427#[cfg(feature = "mock")]
428mod tests {
429    #[cfg(feature = "sync")]
430    use crate::util::StreamShim;
431    use crate::{
432        DbBackend, DbErr, IntoMockRow, MockDatabase, Statement, Transaction, TransactionError,
433        TransactionTrait, entity::*, error::*, tests_cfg::*,
434    };
435    use pretty_assertions::assert_eq;
436
437    #[derive(Debug, PartialEq, Eq)]
438    pub struct MyErr(String);
439
440    impl std::error::Error for MyErr {}
441
442    impl std::fmt::Display for MyErr {
443        fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
444            write!(f, "{}", self.0.as_str())
445        }
446    }
447
448    #[test]
449    fn test_transaction_1() {
450        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
451
452        db.transaction::<_, (), DbErr>(|txn| {
453            let _1 = cake::Entity::find().one(txn);
454            let _2 = fruit::Entity::find().all(txn);
455
456            Ok(())
457        })
458        .unwrap();
459
460        let _ = cake::Entity::find().all(&db);
461
462        assert_eq!(
463            db.into_transaction_log(),
464            [
465                Transaction::many([
466                    Statement::from_string(DbBackend::Postgres, "BEGIN"),
467                    Statement::from_sql_and_values(
468                        DbBackend::Postgres,
469                        r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
470                        [1u64.into()]
471                    ),
472                    Statement::from_sql_and_values(
473                        DbBackend::Postgres,
474                        r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
475                        []
476                    ),
477                    Statement::from_string(DbBackend::Postgres, "COMMIT"),
478                ]),
479                Transaction::from_sql_and_values(
480                    DbBackend::Postgres,
481                    r#"SELECT "cake"."id", "cake"."name" FROM "cake""#,
482                    []
483                ),
484            ]
485        );
486    }
487
488    #[test]
489    fn test_transaction_2() {
490        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
491
492        let result = db.transaction::<_, (), MyErr>(|txn| {
493            let _ = cake::Entity::find().one(txn);
494            Err(MyErr("test".to_owned()))
495        });
496
497        match result {
498            Err(TransactionError::Transaction(err)) => {
499                assert_eq!(err, MyErr("test".to_owned()))
500            }
501            _ => unreachable!(),
502        }
503
504        assert_eq!(
505            db.into_transaction_log(),
506            [Transaction::many([
507                Statement::from_string(DbBackend::Postgres, "BEGIN"),
508                Statement::from_sql_and_values(
509                    DbBackend::Postgres,
510                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
511                    [1u64.into()]
512                ),
513                Statement::from_string(DbBackend::Postgres, "ROLLBACK"),
514            ])]
515        );
516    }
517
518    #[test]
519    fn test_nested_transaction_1() {
520        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
521
522        db.transaction::<_, (), DbErr>(|txn| {
523            let _ = cake::Entity::find().one(txn);
524
525            txn.transaction::<_, (), DbErr>(|txn| {
526                let _ = fruit::Entity::find().all(txn);
527
528                Ok(())
529            })
530            .unwrap();
531
532            Ok(())
533        })
534        .unwrap();
535
536        assert_eq!(
537            db.into_transaction_log(),
538            [Transaction::many([
539                Statement::from_string(DbBackend::Postgres, "BEGIN"),
540                Statement::from_sql_and_values(
541                    DbBackend::Postgres,
542                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
543                    [1u64.into()]
544                ),
545                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_1"),
546                Statement::from_sql_and_values(
547                    DbBackend::Postgres,
548                    r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
549                    []
550                ),
551                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_1"),
552                Statement::from_string(DbBackend::Postgres, "COMMIT"),
553            ]),]
554        );
555    }
556
557    #[test]
558    fn test_nested_transaction_2() {
559        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
560
561        db.transaction::<_, (), DbErr>(|txn| {
562            let _ = cake::Entity::find().one(txn);
563
564            txn.transaction::<_, (), DbErr>(|txn| {
565                let _ = fruit::Entity::find().all(txn);
566
567                txn.transaction::<_, (), DbErr>(|txn| {
568                    let _ = cake::Entity::find().all(txn);
569
570                    Ok(())
571                })
572                .unwrap();
573
574                Ok(())
575            })
576            .unwrap();
577
578            Ok(())
579        })
580        .unwrap();
581
582        assert_eq!(
583            db.into_transaction_log(),
584            [Transaction::many([
585                Statement::from_string(DbBackend::Postgres, "BEGIN"),
586                Statement::from_sql_and_values(
587                    DbBackend::Postgres,
588                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
589                    [1u64.into()]
590                ),
591                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_1"),
592                Statement::from_sql_and_values(
593                    DbBackend::Postgres,
594                    r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
595                    []
596                ),
597                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_2"),
598                Statement::from_sql_and_values(
599                    DbBackend::Postgres,
600                    r#"SELECT "cake"."id", "cake"."name" FROM "cake""#,
601                    []
602                ),
603                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_2"),
604                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_1"),
605                Statement::from_string(DbBackend::Postgres, "COMMIT"),
606            ]),]
607        );
608    }
609
610    #[test]
611    fn test_stream_1() -> Result<(), DbErr> {
612        let apple = fruit::Model {
613            id: 1,
614            name: "Apple".to_owned(),
615            cake_id: Some(1),
616        };
617
618        let orange = fruit::Model {
619            id: 2,
620            name: "orange".to_owned(),
621            cake_id: None,
622        };
623
624        let db = MockDatabase::new(DbBackend::Postgres)
625            .append_query_results([[apple.clone(), orange.clone()]])
626            .into_connection();
627
628        let mut stream = fruit::Entity::find().stream(&db)?;
629
630        assert_eq!(stream.try_next()?, Some(apple));
631
632        assert_eq!(stream.try_next()?, Some(orange));
633
634        assert_eq!(stream.try_next()?, None);
635
636        Ok(())
637    }
638
639    #[test]
640    fn test_stream_2() -> Result<(), DbErr> {
641        use fruit::Entity as Fruit;
642        let db = MockDatabase::new(DbBackend::Postgres)
643            .append_query_results([Vec::<fruit::Model>::new()])
644            .into_connection();
645
646        let mut stream = Fruit::find().stream(&db)?;
647
648        while let Some(item) = stream.try_next()? {
649            let _item: fruit::ActiveModel = item.into();
650        }
651
652        Ok(())
653    }
654
655    #[test]
656    fn test_stream_in_transaction() -> Result<(), DbErr> {
657        let apple = fruit::Model {
658            id: 1,
659            name: "Apple".to_owned(),
660            cake_id: Some(1),
661        };
662
663        let orange = fruit::Model {
664            id: 2,
665            name: "orange".to_owned(),
666            cake_id: None,
667        };
668
669        let db = MockDatabase::new(DbBackend::Postgres)
670            .append_query_results([[apple.clone(), orange.clone()]])
671            .into_connection();
672
673        let txn = db.begin()?;
674
675        if let Ok(mut stream) = fruit::Entity::find().stream(&txn) {
676            assert_eq!(stream.try_next()?, Some(apple));
677
678            assert_eq!(stream.try_next()?, Some(orange));
679
680            assert_eq!(stream.try_next()?, None);
681
682            // stream will be dropped end of scope
683        }
684
685        txn.commit()?;
686
687        Ok(())
688    }
689
690    #[test]
691    fn test_mocked_join() {
692        let row = (
693            cake::Model {
694                id: 1,
695                name: "Apple Cake".to_owned(),
696            },
697            fruit::Model {
698                id: 2,
699                name: "Apple".to_owned(),
700                cake_id: Some(1),
701            },
702        );
703        let mocked_row = row.into_mock_row();
704
705        let a_id = mocked_row.try_get::<i32, _>("A_id");
706        assert!(a_id.is_ok());
707        assert_eq!(1, a_id.unwrap());
708        let b_id = mocked_row.try_get::<i32, _>("B_id");
709        assert!(b_id.is_ok());
710        assert_eq!(2, b_id.unwrap());
711    }
712
713    #[test]
714    fn test_find_also_related_1() -> Result<(), DbErr> {
715        let db = MockDatabase::new(DbBackend::Postgres)
716            .append_query_results([[(
717                cake::Model {
718                    id: 1,
719                    name: "Apple Cake".to_owned(),
720                },
721                fruit::Model {
722                    id: 2,
723                    name: "Apple".to_owned(),
724                    cake_id: Some(1),
725                },
726            )]])
727            .into_connection();
728
729        assert_eq!(
730            cake::Entity::find()
731                .find_also_related(fruit::Entity)
732                .all(&db)?,
733            [(
734                cake::Model {
735                    id: 1,
736                    name: "Apple Cake".to_owned(),
737                },
738                Some(fruit::Model {
739                    id: 2,
740                    name: "Apple".to_owned(),
741                    cake_id: Some(1),
742                })
743            )]
744        );
745
746        assert_eq!(
747            db.into_transaction_log(),
748            [Transaction::from_sql_and_values(
749                DbBackend::Postgres,
750                r#"SELECT "cake"."id" AS "A_id", "cake"."name" AS "A_name", "fruit"."id" AS "B_id", "fruit"."name" AS "B_name", "fruit"."cake_id" AS "B_cake_id" FROM "cake" LEFT JOIN "fruit" ON "cake"."id" = "fruit"."cake_id""#,
751                []
752            ),]
753        );
754
755        Ok(())
756    }
757
758    #[cfg(feature = "postgres-array")]
759    #[test]
760    fn test_postgres_array_1() -> Result<(), DbErr> {
761        mod collection {
762            use crate as sea_orm;
763            use crate::entity::prelude::*;
764
765            #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
766            #[sea_orm(table_name = "collection")]
767            pub struct Model {
768                #[sea_orm(primary_key)]
769                pub id: i32,
770                pub integers: Vec<i32>,
771                pub integers_opt: Option<Vec<i32>>,
772            }
773
774            #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
775            pub enum Relation {}
776
777            impl ActiveModelBehavior for ActiveModel {}
778        }
779
780        let db = MockDatabase::new(DbBackend::Postgres)
781            .append_query_results([[
782                collection::Model {
783                    id: 1,
784                    integers: vec![1, 2, 3],
785                    integers_opt: Some(vec![1, 2, 3]),
786                },
787                collection::Model {
788                    id: 2,
789                    integers: vec![],
790                    integers_opt: Some(vec![]),
791                },
792                collection::Model {
793                    id: 3,
794                    integers: vec![3, 1, 4],
795                    integers_opt: None,
796                },
797            ]])
798            .into_connection();
799
800        assert_eq!(
801            collection::Entity::find().all(&db)?,
802            [
803                collection::Model {
804                    id: 1,
805                    integers: vec![1, 2, 3],
806                    integers_opt: Some(vec![1, 2, 3]),
807                },
808                collection::Model {
809                    id: 2,
810                    integers: vec![],
811                    integers_opt: Some(vec![]),
812                },
813                collection::Model {
814                    id: 3,
815                    integers: vec![3, 1, 4],
816                    integers_opt: None,
817                },
818            ]
819        );
820
821        assert_eq!(
822            db.into_transaction_log(),
823            [Transaction::from_sql_and_values(
824                DbBackend::Postgres,
825                r#"SELECT "collection"."id", "collection"."integers", "collection"."integers_opt" FROM "collection""#,
826                []
827            ),]
828        );
829
830        Ok(())
831    }
832
833    #[test]
834    fn test_query_err() {
835        let db = MockDatabase::new(DbBackend::MySql)
836            .append_query_errors([query_err("this is a mock query error")])
837            .into_connection();
838
839        assert_eq!(
840            cake::Entity::find().all(&db),
841            Err(query_err("this is a mock query error"))
842        );
843    }
844
845    #[test]
846    fn test_exec_err() {
847        let db = MockDatabase::new(DbBackend::MySql)
848            .append_exec_errors([exec_err("this is a mock exec error")])
849            .into_connection();
850
851        let model = cake::ActiveModel::new();
852
853        assert_eq!(model.save(&db), Err(exec_err("this is a mock exec error")));
854    }
855}
sea_orm/database/mock.rs

sea_orm/database/
mock.rs
