import 'reflect-metadata';
import {
	closeTestingConnections,
	createTestingConnections,
	reloadTestingDatabases,
} from '../../utils/test-utils';
import { DataSource } from '../../../src/data-source/DataSource';
import { Post } from './entity/Post';

describe('github issues > #5734 insert([]) should not crash', () => {
	let connections: DataSource[];
	before(
		async () =>
			(connections = await createTestingConnections({
				entities: [__dirname + '/entity/*{.js,.ts}'],
				subscribers: [__dirname + '/subscriber/*{.js,.ts}'],
				schemaCreate: true,
				dropSchema: true,
			})),
	);
	beforeEach(() => reloadTestingDatabases(connections));
	after(() => closeTestingConnections(connections));

	it('should not crash on insert([])', () =>
		Promise.all(
			connections.map(async (connection) => {
				const repository = connection.getRepository(Post);
				await repository.insert([]);
			}),
		));

	it('should still work with a nonempty array', () =>
		Promise.all(
			connections.map(async (connection) => {
				const repository = connection.getRepository(Post);
				await repository.insert([new Post(1)]);
				await repository.findOneOrFail({ where: { id: 1 } });
			}),
		));
});