import "reflect-metadata"
import {
    createTestingConnections,
    closeTestingConnections,
    reloadTestingDatabases,
} from "../../utils/test-utils"
import { DataSource } from "../../../src/data-source/DataSource"
import { Migration } from "../../../src/migration/Migration"
import { QueryFailedError } from "../../../src/error/QueryFailedError"

describe("github issues > #2875 Option to run migrations in 1-transaction-per-migration mode", () => {
    let connections: DataSource[]
    before(
        async () =>
            (connections = await createTestingConnections({
                __dirname,
                schemaCreate: false,
                dropSchema: true,
                enabledDrivers: ["postgres"],
            })),
    )
    beforeEach(() => reloadTestingDatabases(connections))
    after(() => closeTestingConnections(connections))

    it("should fail to run all necessary migrations when transaction is all", () =>
        Promise.all(
            connections.map(async (connection) => {
                return connection
                    .runMigrations({ transaction: "all" })
                    .should.be.rejectedWith(
                        QueryFailedError,
                        'relation "users" does not exist',
                    )
            }),
        ))

    it("should be able to run all necessary migrations when transaction is each", () =>
        Promise.all(
            connections.map(async (connection) => {
                const mymigr: Migration[] = await connection.runMigrations({
                    transaction: "each",
                })

                mymigr.length.should.be.equal(3)
                mymigr[0].name.should.be.equal(
                    "CreateUuidExtension0000000000001",
                )
                mymigr[1].name.should.be.equal("CreateUsers0000000000002")
                mymigr[2].name.should.be.equal("InsertUser0000000000003")
            }),
        ))
})