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

describe('github issues > #80 repository.save fails when empty array is sent to the method', () => {
	let connections: DataSource[];
	before(
		async () =>
			(connections = await createTestingConnections({
				entities: [__dirname + '/entity/*{.js,.ts}'],
			})),
	);
	beforeEach(() => reloadTestingDatabases(connections));
	after(() => closeTestingConnections(connections));

	it('should persist successfully and return persisted entity', () =>
		Promise.all(
			connections.map(async (connection) => {
				const post = new Post();
				post.title = 'Hello Post #1';
				const returnedPost = await connection.manager.save(post);

				expect(returnedPost).not.to.be.undefined;
				returnedPost.should.be.equal(post);
			}),
		));

	it('should not fail if empty array is given to persist method', () =>
		Promise.all(
			connections.map(async (connection) => {
				const posts: Post[] = [];
				const returnedPosts = await connection.manager.save(posts);
				expect(returnedPosts).not.to.be.undefined;
				returnedPosts.should.be.equal(posts);
			}),
		));
});