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            ({
454                let _1 = cake::Entity::find().one(txn);
455                let _2 = fruit::Entity::find().all(txn);
456
457                Ok(())
458            })
459        })
460        .unwrap();
461
462        let _ = cake::Entity::find().all(&db);
463
464        assert_eq!(
465            db.into_transaction_log(),
466            [
467                Transaction::many([
468                    Statement::from_string(DbBackend::Postgres, "BEGIN"),
469                    Statement::from_sql_and_values(
470                        DbBackend::Postgres,
471                        r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
472                        [1u64.into()]
473                    ),
474                    Statement::from_sql_and_values(
475                        DbBackend::Postgres,
476                        r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
477                        []
478                    ),
479                    Statement::from_string(DbBackend::Postgres, "COMMIT"),
480                ]),
481                Transaction::from_sql_and_values(
482                    DbBackend::Postgres,
483                    r#"SELECT "cake"."id", "cake"."name" FROM "cake""#,
484                    []
485                ),
486            ]
487        );
488    }
489
490    #[test]
491    fn test_transaction_2() {
492        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
493
494        let result = db.transaction::<_, (), MyErr>(|txn| {
495            ({
496                let _ = cake::Entity::find().one(txn);
497                Err(MyErr("test".to_owned()))
498            })
499        });
500
501        match result {
502            Err(TransactionError::Transaction(err)) => {
503                assert_eq!(err, MyErr("test".to_owned()))
504            }
505            _ => unreachable!(),
506        }
507
508        assert_eq!(
509            db.into_transaction_log(),
510            [Transaction::many([
511                Statement::from_string(DbBackend::Postgres, "BEGIN"),
512                Statement::from_sql_and_values(
513                    DbBackend::Postgres,
514                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
515                    [1u64.into()]
516                ),
517                Statement::from_string(DbBackend::Postgres, "ROLLBACK"),
518            ])]
519        );
520    }
521
522    #[test]
523    fn test_nested_transaction_1() {
524        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
525
526        db.transaction::<_, (), DbErr>(|txn| {
527            ({
528                let _ = cake::Entity::find().one(txn);
529
530                txn.transaction::<_, (), DbErr>(|txn| {
531                    ({
532                        let _ = fruit::Entity::find().all(txn);
533
534                        Ok(())
535                    })
536                })
537                .unwrap();
538
539                Ok(())
540            })
541        })
542        .unwrap();
543
544        assert_eq!(
545            db.into_transaction_log(),
546            [Transaction::many([
547                Statement::from_string(DbBackend::Postgres, "BEGIN"),
548                Statement::from_sql_and_values(
549                    DbBackend::Postgres,
550                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
551                    [1u64.into()]
552                ),
553                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_1"),
554                Statement::from_sql_and_values(
555                    DbBackend::Postgres,
556                    r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
557                    []
558                ),
559                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_1"),
560                Statement::from_string(DbBackend::Postgres, "COMMIT"),
561            ]),]
562        );
563    }
564
565    #[test]
566    fn test_nested_transaction_2() {
567        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
568
569        db.transaction::<_, (), DbErr>(|txn| {
570            ({
571                let _ = cake::Entity::find().one(txn);
572
573                txn.transaction::<_, (), DbErr>(|txn| {
574                    ({
575                        let _ = fruit::Entity::find().all(txn);
576
577                        txn.transaction::<_, (), DbErr>(|txn| {
578                            ({
579                                let _ = cake::Entity::find().all(txn);
580
581                                Ok(())
582                            })
583                        })
584                        .unwrap();
585
586                        Ok(())
587                    })
588                })
589                .unwrap();
590
591                Ok(())
592            })
593        })
594        .unwrap();
595
596        assert_eq!(
597            db.into_transaction_log(),
598            [Transaction::many([
599                Statement::from_string(DbBackend::Postgres, "BEGIN"),
600                Statement::from_sql_and_values(
601                    DbBackend::Postgres,
602                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
603                    [1u64.into()]
604                ),
605                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_1"),
606                Statement::from_sql_and_values(
607                    DbBackend::Postgres,
608                    r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
609                    []
610                ),
611                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_2"),
612                Statement::from_sql_and_values(
613                    DbBackend::Postgres,
614                    r#"SELECT "cake"."id", "cake"."name" FROM "cake""#,
615                    []
616                ),
617                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_2"),
618                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_1"),
619                Statement::from_string(DbBackend::Postgres, "COMMIT"),
620            ]),]
621        );
622    }
623
624    #[test]
625    fn test_stream_1() -> Result<(), DbErr> {
626        let apple = fruit::Model {
627            id: 1,
628            name: "Apple".to_owned(),
629            cake_id: Some(1),
630        };
631
632        let orange = fruit::Model {
633            id: 2,
634            name: "orange".to_owned(),
635            cake_id: None,
636        };
637
638        let db = MockDatabase::new(DbBackend::Postgres)
639            .append_query_results([[apple.clone(), orange.clone()]])
640            .into_connection();
641
642        let mut stream = fruit::Entity::find().stream(&db)?;
643
644        assert_eq!(stream.try_next()?, Some(apple));
645
646        assert_eq!(stream.try_next()?, Some(orange));
647
648        assert_eq!(stream.try_next()?, None);
649
650        Ok(())
651    }
652
653    #[test]
654    fn test_stream_2() -> Result<(), DbErr> {
655        use fruit::Entity as Fruit;
656        let db = MockDatabase::new(DbBackend::Postgres)
657            .append_query_results([Vec::<fruit::Model>::new()])
658            .into_connection();
659
660        let mut stream = Fruit::find().stream(&db)?;
661
662        while let Some(item) = stream.try_next()? {
663            let _item: fruit::ActiveModel = item.into();
664        }
665
666        Ok(())
667    }
668
669    #[test]
670    fn test_stream_in_transaction() -> Result<(), DbErr> {
671        let apple = fruit::Model {
672            id: 1,
673            name: "Apple".to_owned(),
674            cake_id: Some(1),
675        };
676
677        let orange = fruit::Model {
678            id: 2,
679            name: "orange".to_owned(),
680            cake_id: None,
681        };
682
683        let db = MockDatabase::new(DbBackend::Postgres)
684            .append_query_results([[apple.clone(), orange.clone()]])
685            .into_connection();
686
687        let txn = db.begin()?;
688
689        if let Ok(mut stream) = fruit::Entity::find().stream(&txn) {
690            assert_eq!(stream.try_next()?, Some(apple));
691
692            assert_eq!(stream.try_next()?, Some(orange));
693
694            assert_eq!(stream.try_next()?, None);
695
696            // stream will be dropped end of scope
697        }
698
699        txn.commit()?;
700
701        Ok(())
702    }
703
704    #[test]
705    fn test_mocked_join() {
706        let row = (
707            cake::Model {
708                id: 1,
709                name: "Apple Cake".to_owned(),
710            },
711            fruit::Model {
712                id: 2,
713                name: "Apple".to_owned(),
714                cake_id: Some(1),
715            },
716        );
717        let mocked_row = row.into_mock_row();
718
719        let a_id = mocked_row.try_get::<i32, _>("A_id");
720        assert!(a_id.is_ok());
721        assert_eq!(1, a_id.unwrap());
722        let b_id = mocked_row.try_get::<i32, _>("B_id");
723        assert!(b_id.is_ok());
724        assert_eq!(2, b_id.unwrap());
725    }
726
727    #[test]
728    fn test_find_also_related_1() -> Result<(), DbErr> {
729        let db = MockDatabase::new(DbBackend::Postgres)
730            .append_query_results([[(
731                cake::Model {
732                    id: 1,
733                    name: "Apple Cake".to_owned(),
734                },
735                fruit::Model {
736                    id: 2,
737                    name: "Apple".to_owned(),
738                    cake_id: Some(1),
739                },
740            )]])
741            .into_connection();
742
743        assert_eq!(
744            cake::Entity::find()
745                .find_also_related(fruit::Entity)
746                .all(&db)?,
747            [(
748                cake::Model {
749                    id: 1,
750                    name: "Apple Cake".to_owned(),
751                },
752                Some(fruit::Model {
753                    id: 2,
754                    name: "Apple".to_owned(),
755                    cake_id: Some(1),
756                })
757            )]
758        );
759
760        assert_eq!(
761            db.into_transaction_log(),
762            [Transaction::from_sql_and_values(
763                DbBackend::Postgres,
764                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""#,
765                []
766            ),]
767        );
768
769        Ok(())
770    }
771
772    #[cfg(feature = "postgres-array")]
773    #[test]
774    fn test_postgres_array_1() -> Result<(), DbErr> {
775        mod collection {
776            use crate as sea_orm;
777            use crate::entity::prelude::*;
778
779            #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
780            #[sea_orm(table_name = "collection")]
781            pub struct Model {
782                #[sea_orm(primary_key)]
783                pub id: i32,
784                pub integers: Vec<i32>,
785                pub integers_opt: Option<Vec<Option<i32>>>,
786            }
787
788            #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
789            pub enum Relation {}
790
791            impl ActiveModelBehavior for ActiveModel {}
792        }
793
794        let db = MockDatabase::new(DbBackend::Postgres)
795            .append_query_results([[
796                collection::Model {
797                    id: 1,
798                    integers: vec![1, 2, 3],
799                    integers_opt: Some(vec![1, 2, 3].into_iter().map(Some).collect()),
800                },
801                collection::Model {
802                    id: 2,
803                    integers: vec![],
804                    integers_opt: Some(vec![]),
805                },
806                collection::Model {
807                    id: 3,
808                    integers: vec![3, 1, 4],
809                    integers_opt: None,
810                },
811            ]])
812            .into_connection();
813
814        assert_eq!(
815            collection::Entity::find().all(&db)?,
816            [
817                collection::Model {
818                    id: 1,
819                    integers: vec![1, 2, 3],
820                    integers_opt: Some(vec![Some(1), Some(2), Some(3)]),
821                },
822                collection::Model {
823                    id: 2,
824                    integers: vec![],
825                    integers_opt: Some(vec![]),
826                },
827                collection::Model {
828                    id: 3,
829                    integers: vec![3, 1, 4],
830                    integers_opt: None,
831                },
832            ]
833        );
834
835        assert_eq!(
836            db.into_transaction_log(),
837            [Transaction::from_sql_and_values(
838                DbBackend::Postgres,
839                r#"SELECT "collection"."id", "collection"."integers", "collection"."integers_opt" FROM "collection""#,
840                []
841            ),]
842        );
843
844        Ok(())
845    }
846
847    #[test]
848    fn test_query_err() {
849        let db = MockDatabase::new(DbBackend::MySql)
850            .append_query_errors([query_err("this is a mock query error")])
851            .into_connection();
852
853        assert_eq!(
854            cake::Entity::find().all(&db),
855            Err(query_err("this is a mock query error"))
856        );
857    }
858
859    #[test]
860    fn test_exec_err() {
861        let db = MockDatabase::new(DbBackend::MySql)
862            .append_exec_errors([exec_err("this is a mock exec error")])
863            .into_connection();
864
865        let model = cake::ActiveModel::new();
866
867        assert_eq!(model.save(&db), Err(exec_err("this is a mock exec error")));
868    }
869}
sea_orm/database/mock.rs

sea_orm/database/
mock.rs
