import 'reflect-metadata';
import {
	createTestingConnections,
	closeTestingConnections,
	reloadTestingDatabases,
} from '../../utils/test-utils';
import { DataSource } from '../../../src/data-source/DataSource';
import { PostgresDriver } from '../../../src/driver/postgres/PostgresDriver';
import { expect } from 'chai';

describe('github issues > #6958 Promises never get resolved in specific cases', () => {
	let connections: DataSource[];
	before(
		async () =>
			(connections = await createTestingConnections({
				enabledDrivers: ['postgres'],
			})),
	);
	beforeEach(() => reloadTestingDatabases(connections));
	after(() => closeTestingConnections(connections));

	it('should release all used query runners upon disconnection', () =>
		Promise.all(
			connections.map(async (connection) => {
				const runner1 = connection.createQueryRunner();
				await runner1.query('SELECT 1 as foo;'); // dummy query to ensure that a database connection is established
				const runner2 = connection.createQueryRunner();
				await runner2.query('SELECT 2 as foo;');

				await connection.close();

				expect(runner1.isReleased).to.be.true;
				expect(runner2.isReleased).to.be.true;
				expect((connection.driver as PostgresDriver).connectedQueryRunners.length).to.equal(0);
			}),
		));
});