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

describe("github issues > #4842 QueryExpressionMap doesn't clone distinct property", () => {
	let connections: DataSource[];
	before(
		async () =>
			(connections = await createTestingConnections({
				entities: [__dirname + '/entity/*{.js,.ts}'],
			})),
	);
	beforeEach(() => reloadTestingDatabases(connections));
	after(() => closeTestingConnections(connections));

	it('should contain correct distinct value after query builder is cloned', () =>
		Promise.all(
			connections.map(async (connection) => {
				const query = connection.manager
					.createQueryBuilder(Post, 'post')
					.distinct()
					.disableEscaping();
				const sqlWithDistinct = query.getSql();

				expect(query.clone().getSql()).to.equal(sqlWithDistinct);
			}),
		));
});