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)
            }),
        ))
})