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TypeScript ORM for Node.js based on Data Mapper, Unit of Work and Identity Map patterns. Supports MongoDB, MySQL, PostgreSQL and SQLite databases as well as usage with vanilla JavaScript.
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text/typescript
import type { MikroORM } from '@mikro-orm/core';
import { ref, wrap } from '@mikro-orm/core';
import { MySqlDriver } from '@mikro-orm/mysql';
import { initORMMySql, mockLogger } from '../../bootstrap';
import { Author2, Book2 } from '../../entities-sql';
describe('lazy scalar properties (mysql)', () => {
let orm: MikroORM<MySqlDriver>;
beforeAll(async () => orm = await initORMMySql(undefined, undefined, true));
beforeEach(async () => orm.schema.clearDatabase());
afterAll(async () => {
await orm.schema.dropDatabase();
await orm.close(true);
});
test('lazy scalar properties (select-in)', async () => {
orm.config.set('loadStrategy', 'select-in');
const book = new Book2('b', new Author2('n', 'e'));
book.perex = ref('123');
await orm.em.persistAndFlush(book);
orm.em.clear();
const mock = mockLogger(orm, ['query']);
const r1 = await orm.em.find(Author2, {}, { populate: ['books'] });
expect(r1[0].books[0].perex?.unwrap()).not.toBe('123');
await wrap(r1[0]).populate(['books.perex']);
expect(r1[0].books[0].perex?.unwrap()).toBe('123');
expect(mock.mock.calls).toHaveLength(3);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `a1`.`author_id` as `address_author_id` from `author2` as `a0` left join `address2` as `a1` on `a0`.`id` = `a1`.`author_id`');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`created_at`, `b0`.`title`, `b0`.`price`, `b0`.`double`, `b0`.`meta`, `b0`.`author_id`, `b0`.`publisher_id`, `b0`.price * 1.19 as `price_taxed`, `t1`.`id` as `test_id` ' +
'from `book2` as `b0` ' +
'left join `test2` as `t1` on `b0`.`uuid_pk` = `t1`.`book_uuid_pk` ' +
'where `b0`.`author_id` is not null and `b0`.`author_id` in (?) ' +
'order by `b0`.`title` asc');
expect(mock.mock.calls[2][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`perex` from `book2` as `b0` where `b0`.`author_id` is not null and `b0`.`uuid_pk` in (?)');
orm.em.clear();
mock.mock.calls.length = 0;
const r2 = await orm.em.find(Author2, {}, { populate: ['books.perex'] });
expect(r2[0].books[0].perex?.get()).toBe('123');
expect(mock.mock.calls).toHaveLength(2);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `a1`.`author_id` as `address_author_id` from `author2` as `a0` left join `address2` as `a1` on `a0`.`id` = `a1`.`author_id`');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.*, `b0`.price * 1.19 as `price_taxed`, `t1`.`id` as `test_id` ' +
'from `book2` as `b0` ' +
'left join `test2` as `t1` on `b0`.`uuid_pk` = `t1`.`book_uuid_pk` ' +
'where `b0`.`author_id` is not null and `b0`.`author_id` in (?) ' +
'order by `b0`.`title` asc');
orm.em.clear();
mock.mock.calls.length = 0;
const r3 = await orm.em.findOne(Author2, book.author, { populate: ['books'] });
expect(r3!.books[0].perex?.unwrap()).not.toBe('123');
await expect(r3!.books[0].perex?.load()).resolves.toBe('123');
expect(mock.mock.calls).toHaveLength(3);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `a1`.`author_id` as `address_author_id` from `author2` as `a0` left join `address2` as `a1` on `a0`.`id` = `a1`.`author_id`');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`created_at`, `b0`.`title`, `b0`.`price`, `b0`.`double`, `b0`.`meta`, `b0`.`author_id`, `b0`.`publisher_id`, `b0`.price * 1.19 as `price_taxed`, `t1`.`id` as `test_id` ' +
'from `book2` as `b0` ' +
'left join `test2` as `t1` on `b0`.`uuid_pk` = `t1`.`book_uuid_pk` ' +
'where `b0`.`author_id` is not null and `b0`.`author_id` in (?) ' +
'order by `b0`.`title` asc');
expect(mock.mock.calls[2][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`perex` from `book2` as `b0` where `b0`.`author_id` is not null and `b0`.`uuid_pk` in (?)');
orm.em.clear();
mock.mock.calls.length = 0;
const r4 = await orm.em.findOne(Author2, book.author, { populate: ['books.perex'] });
expect(r4!.books[0].perex?.$).toBe('123');
expect(mock.mock.calls).toHaveLength(2);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `a1`.`author_id` as `address_author_id` from `author2` as `a0` left join `address2` as `a1` on `a0`.`id` = `a1`.`author_id`');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.*, `b0`.price * 1.19 as `price_taxed`, `t1`.`id` as `test_id` ' +
'from `book2` as `b0` ' +
'left join `test2` as `t1` on `b0`.`uuid_pk` = `t1`.`book_uuid_pk` ' +
'where `b0`.`author_id` is not null and `b0`.`author_id` in (?) ' +
'order by `b0`.`title` asc');
});
test('lazy scalar properties (joined)', async () => {
orm.config.set('loadStrategy', 'joined');
const book = new Book2('b', new Author2('n', 'e'));
book.perex = ref('123');
await orm.em.persistAndFlush(book);
orm.em.clear();
const mock = mockLogger(orm, ['query']);
const r1 = await orm.em.find(Author2, {}, { populate: ['books'] });
expect(r1[0].books[0].perex?.unwrap()).not.toBe('123');
await wrap(r1[0]).populate(['books.perex']);
expect(r1[0].books[0].perex?.unwrap()).toBe('123');
expect(mock.mock.calls).toHaveLength(2);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `b1`.`uuid_pk` as `b1__uuid_pk`, `b1`.`created_at` as `b1__created_at`, `b1`.`title` as `b1__title`, `b1`.`price` as `b1__price`, `b1`.price * 1.19 as `b1__price_taxed`, `b1`.`double` as `b1__double`, `b1`.`meta` as `b1__meta`, `b1`.`author_id` as `b1__author_id`, `b1`.`publisher_id` as `b1__publisher_id`, `a2`.`author_id` as `address_author_id` ' +
'from `author2` as `a0` ' +
'left join `book2` as `b1` on `a0`.`id` = `b1`.`author_id` and `b1`.`author_id` is not null ' +
'left join `address2` as `a2` on `a0`.`id` = `a2`.`author_id` ' +
'order by `b1`.`title` asc');
orm.em.clear();
mock.mock.calls.length = 0;
const r2 = await orm.em.find(Author2, {}, { populate: ['books.perex'] });
expect(r2[0].books[0].perex?.get()).toBe('123');
expect(mock.mock.calls).toHaveLength(1);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `b1`.`uuid_pk` as `b1__uuid_pk`, `b1`.`created_at` as `b1__created_at`, `b1`.`title` as `b1__title`, `b1`.`perex` as `b1__perex`, `b1`.`price` as `b1__price`, `b1`.price * 1.19 as `b1__price_taxed`, `b1`.`double` as `b1__double`, `b1`.`meta` as `b1__meta`, `b1`.`author_id` as `b1__author_id`, `b1`.`publisher_id` as `b1__publisher_id`, `a2`.`author_id` as `address_author_id` ' +
'from `author2` as `a0` ' +
'left join `book2` as `b1` on `a0`.`id` = `b1`.`author_id` and `b1`.`author_id` is not null ' +
'left join `address2` as `a2` on `a0`.`id` = `a2`.`author_id` ' +
'order by `b1`.`title` asc');
orm.em.clear();
mock.mock.calls.length = 0;
const r3 = await orm.em.findOne(Author2, book.author, { populate: ['books'] });
expect(r3!.books[0].perex?.unwrap()).not.toBe('123');
await expect(r3!.books[0].perex?.load()).resolves.toBe('123');
expect(mock.mock.calls).toHaveLength(2);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `b1`.`uuid_pk` as `b1__uuid_pk`, `b1`.`created_at` as `b1__created_at`, `b1`.`title` as `b1__title`, `b1`.`price` as `b1__price`, `b1`.price * 1.19 as `b1__price_taxed`, `b1`.`double` as `b1__double`, `b1`.`meta` as `b1__meta`, `b1`.`author_id` as `b1__author_id`, `b1`.`publisher_id` as `b1__publisher_id`, `a2`.`author_id` as `address_author_id` from `author2` as `a0` left join `book2` as `b1` on `a0`.`id` = `b1`.`author_id` and `b1`.`author_id` is not null left join `address2` as `a2` on `a0`.`id` = `a2`.`author_id` where `a0`.`id` = ? order by `b1`.`title` asc');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`perex` from `book2` as `b0` where `b0`.`author_id` is not null and `b0`.`uuid_pk` in (?)');
orm.em.clear();
mock.mock.calls.length = 0;
const r4 = await orm.em.findOne(Author2, book.author, { populate: ['books.perex'] });
expect(r4!.books[0].perex?.$).toBe('123');
expect(mock.mock.calls).toHaveLength(1);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `b1`.`uuid_pk` as `b1__uuid_pk`, `b1`.`created_at` as `b1__created_at`, `b1`.`title` as `b1__title`, `b1`.`perex` as `b1__perex`, `b1`.`price` as `b1__price`, `b1`.price * 1.19 as `b1__price_taxed`, `b1`.`double` as `b1__double`, `b1`.`meta` as `b1__meta`, `b1`.`author_id` as `b1__author_id`, `b1`.`publisher_id` as `b1__publisher_id`, `a2`.`author_id` as `address_author_id` from `author2` as `a0` left join `book2` as `b1` on `a0`.`id` = `b1`.`author_id` and `b1`.`author_id` is not null left join `address2` as `a2` on `a0`.`id` = `a2`.`author_id` where `a0`.`id` = ? order by `b1`.`title` asc');
});
test('em.populate() respects lazy scalar properties', async () => {
const book = new Book2('b', new Author2('n', 'e'));
book.perex = ref('123');
await orm.em.persistAndFlush(book);
orm.em.clear();
const mock = mockLogger(orm, ['query']);
const r1 = await orm.em.find(Author2, {});
await orm.em.populate(r1, ['books']);
expect(r1[0].books[0].perex?.unwrap()).not.toBe('123');
await orm.em.populate(r1, ['books.perex']);
expect(r1[0].books[0].perex?.unwrap()).toBe('123');
expect(mock.mock.calls).toHaveLength(3);
expect(mock.mock.calls[0][0]).toMatch('select `a0`.*, `a1`.`author_id` as `address_author_id` from `author2` as `a0` left join `address2` as `a1` on `a0`.`id` = `a1`.`author_id`');
expect(mock.mock.calls[1][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`created_at`, `b0`.`title`, `b0`.`price`, `b0`.`double`, `b0`.`meta`, `b0`.`author_id`, `b0`.`publisher_id`, `b0`.price * 1.19 as `price_taxed`, `t1`.`id` as `test_id` from `book2` as `b0` left join `test2` as `t1` on `b0`.`uuid_pk` = `t1`.`book_uuid_pk` where `b0`.`author_id` is not null and `b0`.`author_id` in (?) order by `b0`.`title` asc');
expect(mock.mock.calls[2][0]).toMatch('select `b0`.`uuid_pk`, `b0`.`perex` from `book2` as `b0` where `b0`.`author_id` is not null and `b0`.`uuid_pk` in (?)');
mock.mockReset();
await orm.em.flush(); // no queries should be made, as the lazy property should be merged to entity snapshot
expect(mock.mock.calls).toHaveLength(0);
});
});