sea_orm/database/
mock.rs

1use crate::{
2    error::*, DatabaseConnection, DbBackend, EntityTrait, ExecResult, ExecResultHolder, Iden,
3    IdenStatic, Iterable, MockDatabaseConnection, MockDatabaseTrait, ModelTrait, QueryResult,
4    QueryResultRow, SelectA, SelectB, Statement,
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        DatabaseConnection::MockDatabaseConnection(Arc::new(MockDatabaseConnection::new(self)))
72    }
73
74    /// Add some [MockExecResult]s to `exec_results`
75    pub fn append_exec_results<I>(mut self, vec: I) -> Self
76    where
77        I: IntoIterator<Item = MockExecResult>,
78    {
79        self.exec_results.extend(vec.into_iter().map(Result::Ok));
80        self
81    }
82
83    /// Add some Values to `query_results`
84    pub fn append_query_results<T, I, II>(mut self, vec: II) -> Self
85    where
86        T: IntoMockRow,
87        I: IntoIterator<Item = T>,
88        II: IntoIterator<Item = I>,
89    {
90        for row in vec.into_iter() {
91            let row = row.into_iter().map(|vec| Ok(vec.into_mock_row())).collect();
92            self.query_results.push(row);
93        }
94        self
95    }
96
97    /// Add some [DbErr]s to `exec_results`
98    pub fn append_exec_errors<I>(mut self, vec: I) -> Self
99    where
100        I: IntoIterator<Item = DbErr>,
101    {
102        self.exec_results.extend(vec.into_iter().map(Result::Err));
103        self
104    }
105
106    /// Add some [DbErr]s to `query_results`
107    pub fn append_query_errors<I>(mut self, vec: I) -> Self
108    where
109        I: IntoIterator<Item = DbErr>,
110    {
111        self.query_results.extend(vec.into_iter().map(Result::Err));
112        self
113    }
114}
115
116impl MockDatabaseTrait for MockDatabase {
117    #[instrument(level = "trace")]
118    fn execute(&mut self, counter: usize, statement: Statement) -> Result<ExecResult, DbErr> {
119        if let Some(transaction) = &mut self.transaction {
120            transaction.push(statement);
121        } else {
122            self.transaction_log.push(Transaction::one(statement));
123        }
124        if counter < self.exec_results.len() {
125            match std::mem::replace(
126                &mut self.exec_results[counter],
127                Err(exec_err("this value has been consumed already")),
128            ) {
129                Ok(result) => Ok(ExecResult {
130                    result: ExecResultHolder::Mock(result),
131                }),
132                Err(err) => Err(err),
133            }
134        } else {
135            Err(exec_err("`exec_results` buffer is empty"))
136        }
137    }
138
139    #[instrument(level = "trace")]
140    fn query(&mut self, counter: usize, statement: Statement) -> Result<Vec<QueryResult>, DbErr> {
141        if let Some(transaction) = &mut self.transaction {
142            transaction.push(statement);
143        } else {
144            self.transaction_log.push(Transaction::one(statement));
145        }
146        if counter < self.query_results.len() {
147            match std::mem::replace(
148                &mut self.query_results[counter],
149                Err(query_err("this value has been consumed already")),
150            ) {
151                Ok(result) => Ok(result
152                    .into_iter()
153                    .map(|row| QueryResult {
154                        row: QueryResultRow::Mock(row),
155                    })
156                    .collect()),
157                Err(err) => Err(err),
158            }
159        } else {
160            Err(query_err("`query_results` buffer is empty."))
161        }
162    }
163
164    #[instrument(level = "trace")]
165    fn begin(&mut self) {
166        match self.transaction.as_mut() {
167            Some(transaction) => transaction.begin_nested(self.db_backend),
168            None => self.transaction = Some(OpenTransaction::init()),
169        }
170    }
171
172    #[instrument(level = "trace")]
173    fn commit(&mut self) {
174        match self.transaction.as_mut() {
175            Some(transaction) => {
176                if transaction.commit(self.db_backend) {
177                    if let Some(transaction) = self.transaction.take() {
178                        self.transaction_log.push(transaction.into_transaction());
179                    }
180                }
181            }
182            None => panic!("There is no open transaction to commit"),
183        }
184    }
185
186    #[instrument(level = "trace")]
187    fn rollback(&mut self) {
188        match self.transaction.as_mut() {
189            Some(transaction) => {
190                if transaction.rollback(self.db_backend) {
191                    if let Some(transaction) = self.transaction.take() {
192                        self.transaction_log.push(transaction.into_transaction());
193                    }
194                }
195            }
196            None => panic!("There is no open transaction to rollback"),
197        }
198    }
199
200    fn drain_transaction_log(&mut self) -> Vec<Transaction> {
201        std::mem::take(&mut self.transaction_log)
202    }
203
204    fn get_database_backend(&self) -> DbBackend {
205        self.db_backend
206    }
207
208    fn ping(&self) -> Result<(), DbErr> {
209        Ok(())
210    }
211}
212
213impl MockRow {
214    /// Get a value from the [MockRow]
215    pub fn try_get<T, I: crate::ColIdx>(&self, index: I) -> Result<T, DbErr>
216    where
217        T: ValueType,
218    {
219        if let Some(index) = index.as_str() {
220            T::try_from(
221                self.values
222                    .get(index)
223                    .ok_or_else(|| query_err(format!("No column for ColIdx {index:?}")))?
224                    .clone(),
225            )
226            .map_err(type_err)
227        } else if let Some(index) = index.as_usize() {
228            let (_, value) = self
229                .values
230                .iter()
231                .nth(*index)
232                .ok_or_else(|| query_err(format!("Column at index {index} not found")))?;
233            T::try_from(value.clone()).map_err(type_err)
234        } else {
235            unreachable!("Missing ColIdx implementation for MockRow");
236        }
237    }
238
239    /// An iterator over the keys and values of a mock row
240    pub fn into_column_value_tuples(self) -> impl Iterator<Item = (String, Value)> {
241        self.values.into_iter()
242    }
243}
244
245impl IntoMockRow for MockRow {
246    fn into_mock_row(self) -> MockRow {
247        self
248    }
249}
250
251impl<M> IntoMockRow for M
252where
253    M: ModelTrait,
254{
255    fn into_mock_row(self) -> MockRow {
256        let mut values = BTreeMap::new();
257        for col in <<M::Entity as EntityTrait>::Column>::iter() {
258            values.insert(col.to_string(), self.get(col));
259        }
260        MockRow { values }
261    }
262}
263
264impl<M, N> IntoMockRow for (M, N)
265where
266    M: ModelTrait,
267    N: ModelTrait,
268{
269    fn into_mock_row(self) -> MockRow {
270        let mut mapped_join = BTreeMap::new();
271
272        for column in <<M as ModelTrait>::Entity as EntityTrait>::Column::iter() {
273            mapped_join.insert(
274                format!("{}{}", SelectA.as_str(), column.as_str()),
275                self.0.get(column),
276            );
277        }
278        for column in <<N as ModelTrait>::Entity as EntityTrait>::Column::iter() {
279            mapped_join.insert(
280                format!("{}{}", SelectB.as_str(), column.as_str()),
281                self.1.get(column),
282            );
283        }
284
285        mapped_join.into_mock_row()
286    }
287}
288
289impl<M, N> IntoMockRow for (M, Option<N>)
290where
291    M: ModelTrait,
292    N: ModelTrait,
293{
294    fn into_mock_row(self) -> MockRow {
295        let mut mapped_join = BTreeMap::new();
296
297        for column in <<M as ModelTrait>::Entity as EntityTrait>::Column::iter() {
298            mapped_join.insert(
299                format!("{}{}", SelectA.as_str(), column.as_str()),
300                self.0.get(column),
301            );
302        }
303        if let Some(b_entity) = self.1 {
304            for column in <<N as ModelTrait>::Entity as EntityTrait>::Column::iter() {
305                mapped_join.insert(
306                    format!("{}{}", SelectB.as_str(), column.as_str()),
307                    b_entity.get(column),
308                );
309            }
310        }
311
312        mapped_join.into_mock_row()
313    }
314}
315
316impl<T> IntoMockRow for BTreeMap<T, Value>
317where
318    T: Into<String>,
319{
320    fn into_mock_row(self) -> MockRow {
321        MockRow {
322            values: self.into_iter().map(|(k, v)| (k.into(), v)).collect(),
323        }
324    }
325}
326
327impl Transaction {
328    /// Get the [Value]s from s raw SQL statement depending on the [DatabaseBackend](crate::DatabaseBackend)
329    pub fn from_sql_and_values<I, T>(db_backend: DbBackend, sql: T, values: I) -> Self
330    where
331        I: IntoIterator<Item = Value>,
332        T: Into<String>,
333    {
334        Self::one(Statement::from_string_values_tuple(
335            db_backend,
336            (sql, Values(values.into_iter().collect())),
337        ))
338    }
339
340    /// Create a Transaction with one statement
341    pub fn one(stmt: Statement) -> Self {
342        Self { stmts: vec![stmt] }
343    }
344
345    /// Create a Transaction with many statements
346    pub fn many<I>(stmts: I) -> Self
347    where
348        I: IntoIterator<Item = Statement>,
349    {
350        Self {
351            stmts: stmts.into_iter().collect(),
352        }
353    }
354
355    /// Wrap each Statement as a single-statement Transaction
356    pub fn wrap<I>(stmts: I) -> Vec<Self>
357    where
358        I: IntoIterator<Item = Statement>,
359    {
360        stmts.into_iter().map(Self::one).collect()
361    }
362}
363
364impl OpenTransaction {
365    fn init() -> Self {
366        Self {
367            stmts: vec![Statement::from_string(DbBackend::Postgres, "BEGIN")],
368            transaction_depth: 0,
369        }
370    }
371
372    fn begin_nested(&mut self, db_backend: DbBackend) {
373        self.transaction_depth += 1;
374        self.push(Statement::from_string(
375            db_backend,
376            format!("SAVEPOINT savepoint_{}", self.transaction_depth),
377        ));
378    }
379
380    fn commit(&mut self, db_backend: DbBackend) -> bool {
381        if self.transaction_depth == 0 {
382            self.push(Statement::from_string(db_backend, "COMMIT"));
383            true
384        } else {
385            self.push(Statement::from_string(
386                db_backend,
387                format!("RELEASE SAVEPOINT savepoint_{}", self.transaction_depth),
388            ));
389            self.transaction_depth -= 1;
390            false
391        }
392    }
393
394    fn rollback(&mut self, db_backend: DbBackend) -> bool {
395        if self.transaction_depth == 0 {
396            self.push(Statement::from_string(db_backend, "ROLLBACK"));
397            true
398        } else {
399            self.push(Statement::from_string(
400                db_backend,
401                format!("ROLLBACK TO SAVEPOINT savepoint_{}", self.transaction_depth),
402            ));
403            self.transaction_depth -= 1;
404            false
405        }
406    }
407
408    fn push(&mut self, stmt: Statement) {
409        self.stmts.push(stmt);
410    }
411
412    fn into_transaction(self) -> Transaction {
413        match self.transaction_depth {
414            0 => Transaction { stmts: self.stmts },
415            _ => panic!("There is uncommitted nested transaction"),
416        }
417    }
418}
419
420#[cfg(test)]
421#[cfg(feature = "mock")]
422mod tests {
423    use crate::{
424        entity::*, error::*, tests_cfg::*, DbBackend, DbErr, IntoMockRow, MockDatabase, Statement,
425        Transaction, TransactionError, TransactionTrait,
426    };
427    use pretty_assertions::assert_eq;
428
429    #[derive(Debug, PartialEq, Eq)]
430    pub struct MyErr(String);
431
432    impl std::error::Error for MyErr {}
433
434    impl std::fmt::Display for MyErr {
435        fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
436            write!(f, "{}", self.0.as_str())
437        }
438    }
439
440    #[smol_potat::test]
441    async fn test_transaction_1() {
442        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
443
444        db.transaction::<_, (), DbErr>(|txn| {
445            Box::pin(async move {
446                let _1 = cake::Entity::find().one(txn).await;
447                let _2 = fruit::Entity::find().all(txn).await;
448
449                Ok(())
450            })
451        })
452        .await
453        .unwrap();
454
455        let _ = cake::Entity::find().all(&db).await;
456
457        assert_eq!(
458            db.into_transaction_log(),
459            [
460                Transaction::many([
461                    Statement::from_string(DbBackend::Postgres, "BEGIN"),
462                    Statement::from_sql_and_values(
463                        DbBackend::Postgres,
464                        r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
465                        [1u64.into()]
466                    ),
467                    Statement::from_sql_and_values(
468                        DbBackend::Postgres,
469                        r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
470                        []
471                    ),
472                    Statement::from_string(DbBackend::Postgres, "COMMIT"),
473                ]),
474                Transaction::from_sql_and_values(
475                    DbBackend::Postgres,
476                    r#"SELECT "cake"."id", "cake"."name" FROM "cake""#,
477                    []
478                ),
479            ]
480        );
481    }
482
483    #[smol_potat::test]
484    async fn test_transaction_2() {
485        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
486
487        let result = db
488            .transaction::<_, (), MyErr>(|txn| {
489                Box::pin(async move {
490                    let _ = cake::Entity::find().one(txn).await;
491                    Err(MyErr("test".to_owned()))
492                })
493            })
494            .await;
495
496        match result {
497            Err(TransactionError::Transaction(err)) => {
498                assert_eq!(err, MyErr("test".to_owned()))
499            }
500            _ => unreachable!(),
501        }
502
503        assert_eq!(
504            db.into_transaction_log(),
505            [Transaction::many([
506                Statement::from_string(DbBackend::Postgres, "BEGIN"),
507                Statement::from_sql_and_values(
508                    DbBackend::Postgres,
509                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
510                    [1u64.into()]
511                ),
512                Statement::from_string(DbBackend::Postgres, "ROLLBACK"),
513            ])]
514        );
515    }
516
517    #[smol_potat::test]
518    async fn test_nested_transaction_1() {
519        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
520
521        db.transaction::<_, (), DbErr>(|txn| {
522            Box::pin(async move {
523                let _ = cake::Entity::find().one(txn).await;
524
525                txn.transaction::<_, (), DbErr>(|txn| {
526                    Box::pin(async move {
527                        let _ = fruit::Entity::find().all(txn).await;
528
529                        Ok(())
530                    })
531                })
532                .await
533                .unwrap();
534
535                Ok(())
536            })
537        })
538        .await
539        .unwrap();
540
541        assert_eq!(
542            db.into_transaction_log(),
543            [Transaction::many([
544                Statement::from_string(DbBackend::Postgres, "BEGIN"),
545                Statement::from_sql_and_values(
546                    DbBackend::Postgres,
547                    r#"SELECT "cake"."id", "cake"."name" FROM "cake" LIMIT $1"#,
548                    [1u64.into()]
549                ),
550                Statement::from_string(DbBackend::Postgres, "SAVEPOINT savepoint_1"),
551                Statement::from_sql_and_values(
552                    DbBackend::Postgres,
553                    r#"SELECT "fruit"."id", "fruit"."name", "fruit"."cake_id" FROM "fruit""#,
554                    []
555                ),
556                Statement::from_string(DbBackend::Postgres, "RELEASE SAVEPOINT savepoint_1"),
557                Statement::from_string(DbBackend::Postgres, "COMMIT"),
558            ]),]
559        );
560    }
561
562    #[smol_potat::test]
563    async fn test_nested_transaction_2() {
564        let db = MockDatabase::new(DbBackend::Postgres).into_connection();
565
566        db.transaction::<_, (), DbErr>(|txn| {
567            Box::pin(async move {
568                let _ = cake::Entity::find().one(txn).await;
569
570                txn.transaction::<_, (), DbErr>(|txn| {
571                    Box::pin(async move {
572                        let _ = fruit::Entity::find().all(txn).await;
573
574                        txn.transaction::<_, (), DbErr>(|txn| {
575                            Box::pin(async move {
576                                let _ = cake::Entity::find().all(txn).await;
577
578                                Ok(())
579                            })
580                        })
581                        .await
582                        .unwrap();
583
584                        Ok(())
585                    })
586                })
587                .await
588                .unwrap();
589
590                Ok(())
591            })
592        })
593        .await
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    #[smol_potat::test]
625    async fn test_stream_1() -> Result<(), DbErr> {
626        use futures::TryStreamExt;
627
628        let apple = fruit::Model {
629            id: 1,
630            name: "Apple".to_owned(),
631            cake_id: Some(1),
632        };
633
634        let orange = fruit::Model {
635            id: 2,
636            name: "orange".to_owned(),
637            cake_id: None,
638        };
639
640        let db = MockDatabase::new(DbBackend::Postgres)
641            .append_query_results([[apple.clone(), orange.clone()]])
642            .into_connection();
643
644        let mut stream = fruit::Entity::find().stream(&db).await?;
645
646        assert_eq!(stream.try_next().await?, Some(apple));
647
648        assert_eq!(stream.try_next().await?, Some(orange));
649
650        assert_eq!(stream.try_next().await?, None);
651
652        Ok(())
653    }
654
655    #[smol_potat::test]
656    async fn test_stream_2() -> Result<(), DbErr> {
657        use fruit::Entity as Fruit;
658        use futures::TryStreamExt;
659
660        let db = MockDatabase::new(DbBackend::Postgres)
661            .append_query_results([Vec::<fruit::Model>::new()])
662            .into_connection();
663
664        let mut stream = Fruit::find().stream(&db).await?;
665
666        while let Some(item) = stream.try_next().await? {
667            let _item: fruit::ActiveModel = item.into();
668        }
669
670        Ok(())
671    }
672
673    #[smol_potat::test]
674    async fn test_stream_in_transaction() -> Result<(), DbErr> {
675        use futures::TryStreamExt;
676
677        let apple = fruit::Model {
678            id: 1,
679            name: "Apple".to_owned(),
680            cake_id: Some(1),
681        };
682
683        let orange = fruit::Model {
684            id: 2,
685            name: "orange".to_owned(),
686            cake_id: None,
687        };
688
689        let db = MockDatabase::new(DbBackend::Postgres)
690            .append_query_results([[apple.clone(), orange.clone()]])
691            .into_connection();
692
693        let txn = db.begin().await?;
694
695        if let Ok(mut stream) = fruit::Entity::find().stream(&txn).await {
696            assert_eq!(stream.try_next().await?, Some(apple));
697
698            assert_eq!(stream.try_next().await?, Some(orange));
699
700            assert_eq!(stream.try_next().await?, None);
701
702            // stream will be dropped end of scope
703        }
704
705        txn.commit().await?;
706
707        Ok(())
708    }
709
710    #[smol_potat::test]
711    async fn test_mocked_join() {
712        let row = (
713            cake::Model {
714                id: 1,
715                name: "Apple Cake".to_owned(),
716            },
717            fruit::Model {
718                id: 2,
719                name: "Apple".to_owned(),
720                cake_id: Some(1),
721            },
722        );
723        let mocked_row = row.into_mock_row();
724
725        let a_id = mocked_row.try_get::<i32, _>("A_id");
726        assert!(a_id.is_ok());
727        assert_eq!(1, a_id.unwrap());
728        let b_id = mocked_row.try_get::<i32, _>("B_id");
729        assert!(b_id.is_ok());
730        assert_eq!(2, b_id.unwrap());
731    }
732
733    #[smol_potat::test]
734    async fn test_find_also_related_1() -> Result<(), DbErr> {
735        let db = MockDatabase::new(DbBackend::Postgres)
736            .append_query_results([[(
737                cake::Model {
738                    id: 1,
739                    name: "Apple Cake".to_owned(),
740                },
741                fruit::Model {
742                    id: 2,
743                    name: "Apple".to_owned(),
744                    cake_id: Some(1),
745                },
746            )]])
747            .into_connection();
748
749        assert_eq!(
750            cake::Entity::find()
751                .find_also_related(fruit::Entity)
752                .all(&db)
753                .await?,
754            [(
755                cake::Model {
756                    id: 1,
757                    name: "Apple Cake".to_owned(),
758                },
759                Some(fruit::Model {
760                    id: 2,
761                    name: "Apple".to_owned(),
762                    cake_id: Some(1),
763                })
764            )]
765        );
766
767        assert_eq!(
768            db.into_transaction_log(),
769            [Transaction::from_sql_and_values(
770                DbBackend::Postgres,
771                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""#,
772                []
773            ),]
774        );
775
776        Ok(())
777    }
778
779    #[cfg(feature = "postgres-array")]
780    #[smol_potat::test]
781    async fn test_postgres_array_1() -> Result<(), DbErr> {
782        mod collection {
783            use crate as sea_orm;
784            use crate::entity::prelude::*;
785
786            #[derive(Clone, Debug, PartialEq, Eq, DeriveEntityModel)]
787            #[sea_orm(table_name = "collection")]
788            pub struct Model {
789                #[sea_orm(primary_key)]
790                pub id: i32,
791                pub integers: Vec<i32>,
792                pub integers_opt: Option<Vec<i32>>,
793            }
794
795            #[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
796            pub enum Relation {}
797
798            impl ActiveModelBehavior for ActiveModel {}
799        }
800
801        let db = MockDatabase::new(DbBackend::Postgres)
802            .append_query_results([[
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            .into_connection();
820
821        assert_eq!(
822            collection::Entity::find().all(&db).await?,
823            [
824                collection::Model {
825                    id: 1,
826                    integers: vec![1, 2, 3],
827                    integers_opt: Some(vec![1, 2, 3]),
828                },
829                collection::Model {
830                    id: 2,
831                    integers: vec![],
832                    integers_opt: Some(vec![]),
833                },
834                collection::Model {
835                    id: 3,
836                    integers: vec![3, 1, 4],
837                    integers_opt: None,
838                },
839            ]
840        );
841
842        assert_eq!(
843            db.into_transaction_log(),
844            [Transaction::from_sql_and_values(
845                DbBackend::Postgres,
846                r#"SELECT "collection"."id", "collection"."integers", "collection"."integers_opt" FROM "collection""#,
847                []
848            ),]
849        );
850
851        Ok(())
852    }
853
854    #[smol_potat::test]
855    async fn test_query_err() {
856        let db = MockDatabase::new(DbBackend::MySql)
857            .append_query_errors([query_err("this is a mock query error")])
858            .into_connection();
859
860        assert_eq!(
861            cake::Entity::find().all(&db).await,
862            Err(query_err("this is a mock query error"))
863        );
864    }
865
866    #[smol_potat::test]
867    async fn test_exec_err() {
868        let db = MockDatabase::new(DbBackend::MySql)
869            .append_exec_errors([exec_err("this is a mock exec error")])
870            .into_connection();
871
872        let model = cake::ActiveModel::new();
873
874        assert_eq!(
875            model.save(&db).await,
876            Err(exec_err("this is a mock exec error"))
877        );
878    }
879}
sea_orm/database/mock.rs

sea_orm/database/
mock.rs
