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

describe("github issues > #703.findOne does not return an empty array on OneToMany relationship", () => {
    let connections: DataSource[]
    before(
        async () =>
            (connections = await createTestingConnections({
                entities: [__dirname + "/entity/*{.js,.ts}"],
            })),
    )
    beforeEach(() => reloadTestingDatabases(connections))
    after(() => closeTestingConnections(connections))

    it("should not return anything in joined relation if nothing was found", () =>
        Promise.all(
            connections.map(async (connection) => {
                const category = new Category()
                category.firstId = 1
                category.secondId = 2
                category.name = "category about posts"
                await connection.manager.save(category)

                const post = new Post()
                post.title = "new post"
                post.categories = []
                await connection.manager.save(post)

                const loadedPost = await connection
                    .getRepository(Post)
                    .findOne({
                        where: {
                            id: 1,
                        },
                        relations: { categories: true },
                    })

                loadedPost!.id.should.be.equal(1)
                loadedPost!.title.should.be.equal("new post")
                loadedPost!.categories.length.should.be.equal(0)
            }),
        ))
})
