import "reflect-metadata"
import { DataSource } from "../../../src"

import {
    createTestingConnections,
    closeTestingConnections,
} from "../../utils/test-utils"

import { Post as Post1 } from "./entity/post_with_null_1.entity"
import { Post as Post2 } from "./entity/post_with_null_2.entity"

describe("github issues > #6950 postgres: Inappropiate migration generated for `default: null`", () => {
    describe("null default", () => {
        let connections: DataSource[]
        before(
            async () =>
                (connections = await createTestingConnections({
                    schemaCreate: false,
                    dropSchema: true,
                    entities: [Post1],
                })),
        )
        after(() => closeTestingConnections(connections))

        it("can recognize model changes", () =>
            Promise.all(
                connections.map(async (connection) => {
                    const sqlInMemory = await connection.driver
                        .createSchemaBuilder()
                        .log()
                    sqlInMemory.upQueries.length.should.be.greaterThan(0)
                    sqlInMemory.downQueries.length.should.be.greaterThan(0)
                }),
            ))

        it("does not generate when no model changes", () =>
            Promise.all(
                connections.map(async (connection) => {
                    await connection.driver.createSchemaBuilder().build()

                    const sqlInMemory = await connection.driver
                        .createSchemaBuilder()
                        .log()

                    sqlInMemory.upQueries.length.should.be.equal(0)
                    sqlInMemory.downQueries.length.should.be.equal(0)
                }),
            ))
    })

    describe("null default and nullable", () => {
        let connections: DataSource[]
        before(
            async () =>
                (connections = await createTestingConnections({
                    schemaCreate: false,
                    dropSchema: true,
                    entities: [Post2],
                })),
        )
        after(() => closeTestingConnections(connections))

        it("can recognize model changes", () =>
            Promise.all(
                connections.map(async (connection) => {
                    const sqlInMemory = await connection.driver
                        .createSchemaBuilder()
                        .log()
                    sqlInMemory.upQueries.length.should.be.greaterThan(0)
                    sqlInMemory.downQueries.length.should.be.greaterThan(0)
                }),
            ))

        it("does not generate when no model changes", () =>
            Promise.all(
                connections.map(async (connection) => {
                    await connection.driver.createSchemaBuilder().build()

                    const sqlInMemory = await connection.driver
                        .createSchemaBuilder()
                        .log()

                    sqlInMemory.upQueries.length.should.be.equal(0)
                    sqlInMemory.downQueries.length.should.be.equal(0)
                }),
            ))
    })
})