undeexcepturi/tests/issues/GH1176.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 type { EntityManager } from '@mikro-orm/postgresql';
import { Entity, MikroORM, PrimaryKey, Property } from '@mikro-orm/postgresql';
import { v4 as uuid } from 'uuid';

@Entity({ tableName: 'users' })
class User {

  @PrimaryKey()
  id!: number;

  @Property()
  readonly username: string;

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

}

async function getOrmInstance(): Promise<MikroORM> {
  const orm = await MikroORM.init({
    entities: [User],
    dbName: 'mikro_orm_test_gh_1176',
  });

  return orm as MikroORM;
}

describe('GH issue 1176', () => {
  let orm: MikroORM;
  let em: EntityManager;

  beforeAll(async () => {
    orm = await getOrmInstance();
    await orm.schema.dropDatabase('mikro_orm_test_gh_1176');
    await orm.schema.createDatabase('mikro_orm_test_gh_1176');
  });

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

  beforeEach(() => {
    em = orm.em.fork();
  });

  describe('immediate constraints (failures on insert)', () => {
    beforeAll(async () => {
      const orm = await getOrmInstance();
      await orm.em.getConnection().execute(
        `
          drop table if exists users;
          create table users (
            id serial primary key,
            username varchar(50) not null unique deferrable initially immediate
          );
          `,
      );
      await orm.close();
    });
    describe('implicit transactions', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        username = uuid();
        const user = new User(username);
        em.persist(user);

        await expect(em.flush()).resolves.toBeUndefined();
      });
      it('flush fails when a database constraint fails', async () => {
        const user = new User(username);
        em.persist(user);

        await expect(em.flush()).rejects.toThrow(
          /^insert.+duplicate key value/,
        );
      });
    });

    describe('explicit transactions with "transactional()"', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        const work = em.transactional(async em => {
          username = uuid();
          const user = new User(username);
          em.persist(user);
        });

        await expect(work).resolves.toBeUndefined();
      });
      it('transactional throws when a database constraint fails', async () => {
        const work = em.transactional(async em => {
          const user = new User(username);
          em.persist(user);
        });

        await expect(work).rejects.toThrow(/^insert.+duplicate key value/);
      });
    });

    describe('explicit transactions with explicit begin/commit method calls', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        await em.begin();
        username = uuid();
        const user = new User(username);
        em.persist(user);

        await expect(em.commit()).resolves.toBeUndefined();
      });
      it('commit throws when a database constraint fails', async () => {
        await em.begin();
        const work = async () => {
          try {
            const user = new User(username);
            em.persist(user);
            await em.commit();
          } catch (error) {
            await em.rollback();
            throw error;
          }
        };

        await expect(work).rejects.toThrow(/^insert.+duplicate key value/);
      });
    });
  });

  describe('deferred constraints (failures on commit)', () => {
    beforeAll(async () => {
      const orm = await getOrmInstance();
      await orm.em.getConnection().execute(
        `
        drop table if exists users;
        create table users (
          id serial primary key,
          username varchar(50) not null unique deferrable initially deferred
        );
          `,
      );
      await orm.close();
    });

    describe('implicit transactions', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        username = uuid();
        const user = new User(username);
        em.persist(user);

        await expect(em.flush()).resolves.toBeUndefined();
      });
      it('flush throws when a database constraint fails', async () => {
        const user = new User(username);
        em.persist(user);

        await expect(em.flush()).rejects.toThrow(
          /^COMMIT.+duplicate key value/,
        );
      });
    });

    describe('explicit transactions with "transactional()"', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        const work = em.transactional(async em => {
          username = uuid();
          const user = new User(username);
          em.persist(user);
        });

        await expect(work).resolves.toBeUndefined();
      });
      it('transactional throws when a database constraint fails', async () => {
        const work = async () => {
          await em.transactional(async em => {
            const user = new User(username);
            em.persist(user);
          });
        };

        await expect(work).rejects.toThrow(/^COMMIT.+duplicate key value/);
      });
    });

    describe('explicit transactions with explicit begin/commit/rollback method calls', () => {
      let username: string;
      it('creating a new user succeeds', async () => {
        await em.begin();
        username = uuid();
        const user = new User(username);
        em.persist(user);

        await expect(em.commit()).resolves.toBeUndefined();
      });
      it('commit throws when a database constraint fails', async () => {
        await em.begin();
        const work = async () => {
          try {
            const user = new User(username);
            em.persist(user);
            await em.commit();
          } catch (error) {
            await em.rollback();
            throw error;
          }
        };

        await expect(work).rejects.toThrow(/^COMMIT.+duplicate key value/);
      });
    });
  });
});