undeexcepturi/tests/issues/GH1927.test.ts

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.

import { Collection, Entity, ManyToOne, MikroORM, OneToMany, PrimaryKey, Property } from '@mikro-orm/sqlite';
import { mockLogger } from '../helpers';

@Entity()
class Author {

  @PrimaryKey()
  id!: number;

  @Property({ length: 42 })
  name!: string;

  @OneToMany(() => Book, book => book.author)
  books = new Collection<Book>(this);

  constructor(name: string) {
    this.name = name;
  }

}

@Entity()
class Book {

  @PrimaryKey()
  id!: number;

  @ManyToOne(() => Author)
  author!: Author;

  @Property({ length: 42 })
  name!: string;

  constructor(name: string) {
    this.name = name;
  }

}

describe('GH issue 1927', () => {

  let orm: MikroORM;

  beforeAll(async () => {
    orm = await MikroORM.init({
      entities: [Author, Book],
      dbName: ':memory:',
    });
    await orm.schema.createSchema();
  });

  afterAll(async () => {
    await orm.close(true);
  });

  test(`GH issue 1927`, async () => {
    await orm.em.insert(Author, { name: 'a1' });
    await orm.em.insert(Book, { name: 'b1', author: 1 });
    await orm.em.insert(Book, { name: 'b2', author: 1 });
    await orm.em.insert(Book, { name: 'b3', author: 1 });
    const result = await orm.em.execute('SELECT * FROM "book"');
    const books = result.map(data => orm.em.map(Book, data));
    await orm.em.populate(books, ['author']);

    const mock = mockLogger(orm);
    await orm.em.flush();
    expect(mock.mock.calls).toHaveLength(0);
  });

});