medusa-store/packages/modules/region/integration-tests/__tests__/region-module.spec.ts

import { Modules } from "@medusajs/modules-sdk"
import { IRegionModuleService } from "@medusajs/types"
import { moduleIntegrationTestRunner, SuiteOptions } from "medusa-test-utils"

jest.setTimeout(30000)

moduleIntegrationTestRunner({
  moduleName: Modules.REGION,
  testSuite: ({
    MikroOrmWrapper,
    service,
  }: SuiteOptions<IRegionModuleService>) => {
    describe("Region Module Service", () => {
      it("should create countries on application start", async () => {
        const countries = await service.listCountries({}, { take: null })
        expect(countries.length).toEqual(250)
      })

      it("should create and list a region", async () => {
        const createdRegion = await service.create({
          name: "Europe",
          currency_code: "EUR",
          automatic_taxes: false,
        })

        expect(createdRegion).toEqual(
          expect.objectContaining({
            id: createdRegion.id,
            name: "Europe",
            currency_code: "eur",
            countries: [],
            automatic_taxes: false,
          })
        )

        const region = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        expect(region).toEqual(
          expect.objectContaining({
            id: region.id,
            name: "Europe",
            currency_code: "eur",
            countries: [],
          })
        )
      })

      it("should create a region with countries", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        const region = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        expect(region).toEqual(
          expect.objectContaining({
            id: region.id,
            name: "North America",
            currency_code: "usd",
            automatic_taxes: true,
            countries: [
              expect.objectContaining({
                display_name: "Canada",
                iso_2: "ca",
              }),
              expect.objectContaining({
                display_name: "United States",
                iso_2: "us",
              }),
            ],
          })
        )
      })

      it("should throw when country doesn't exist", async () => {
        await expect(
          service.create({
            name: "North America",
            currency_code: "USD",
            countries: ["neverland"],
          })
        ).rejects.toThrowError('Countries with codes: "neverland" do not exist')
      })

      it("should throw when country is already assigned to a region", async () => {
        await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us"],
        })

        await expect(
          service.create({
            name: "United States",
            currency_code: "USD",
            countries: ["us"],
          })
        ).rejects.toThrowError(
          'Countries with codes: "us" are already assigned to a region'
        )
      })

      it("should throw when country is being assigned to multiple regions", async () => {
        await expect(
          service.create([
            {
              name: "United States",
              currency_code: "USD",
              countries: ["us"],
            },
            {
              name: "North America",
              currency_code: "USD",
              countries: ["us"],
            },
          ])
        ).rejects.toThrowError(
          'Countries with codes: "us" are already assigned to a region'
        )
      })

      it("should upsert the region successfully", async () => {
        const createdRegion = await service.upsert({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await service.upsert({
          id: createdRegion.id,
          name: "Americas",
          currency_code: "MXN",
          countries: ["us", "mx"],
          automatic_taxes: false,
        })

        const latestRegion = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        expect(latestRegion).toMatchObject({
          id: createdRegion.id,
          name: "Americas",
          currency_code: "mxn",
          automatic_taxes: false,
        })
        expect(latestRegion.countries.map((c) => c.iso_2)).toEqual(["mx", "us"])
      })

      it("should allow mixing create and update operations in upsert", async () => {
        const createdRegion = await service.upsert({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        const upserted = await service.upsert([
          {
            id: createdRegion.id,
            name: "Americas",
            currency_code: "USD",
            countries: ["us", "ca"],
          },
          {
            name: "Central America",
            currency_code: "MXN",
            countries: ["mx"],
          },
        ])

        expect(upserted).toEqual(
          expect.arrayContaining([
            expect.objectContaining({
              id: createdRegion.id,
              name: "Americas",
              currency_code: "usd",
            }),
            expect.objectContaining({
              name: "Central America",
              currency_code: "mxn",
            }),
          ])
        )
      })

      it("should update the region successfully", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        const shouldNotBeChangedRegion = await service.create({
          name: "Europe",
          currency_code: "EUR",
          countries: ["hr"],
        })

        await service.update(createdRegion.id, {
          name: "Americas",
          currency_code: "MXN",
          countries: ["us", "mx"],
        })

        const latestRegion = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        const shouldNotBeChangedRegionAfter = await service.retrieve(
          shouldNotBeChangedRegion.id,
          {
            relations: ["countries"],
          }
        )

        expect(latestRegion).toMatchObject({
          id: createdRegion.id,
          name: "Americas",
          currency_code: "mxn",
        })

        expect(
          shouldNotBeChangedRegionAfter.countries.map((c) => c.iso_2)
        ).toEqual(["hr"])

        expect(latestRegion.countries.map((c) => c.iso_2)).toEqual(
          expect.arrayContaining(["mx", "us"])
        )
      })

      it("should update the region without affecting countries if countries are undefined", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await service.update(createdRegion.id, {
          name: "Americas",
          currency_code: "MXN",
        })

        const updatedRegion = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        expect(updatedRegion).toMatchObject({
          id: createdRegion.id,
          name: "Americas",
          currency_code: "mxn",
        })

        expect(updatedRegion.countries.map((c) => c.iso_2)).toEqual([
          "ca",
          "us",
        ])
      })

      it("should remove the countries in a region successfully", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await service.update(createdRegion.id, {
          name: "Americas",
          currency_code: "MXN",
          countries: [],
        })

        const updatedRegion = await service.retrieve(createdRegion.id, {
          relations: ["countries"],
        })

        expect(updatedRegion).toMatchObject({
          id: createdRegion.id,
          name: "Americas",
          currency_code: "mxn",
        })

        expect(updatedRegion.countries).toHaveLength(0)
      })

      it("should fail updating the region countries to non-existent ones", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await expect(
          service.update(
            { id: createdRegion.id },
            {
              countries: ["us", "neverland"],
            }
          )
        ).rejects.toThrowError('Countries with codes: "neverland" do not exist')
      })

      it("should fail updating the region if there are duplicate countries", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await expect(
          service.update(
            { id: createdRegion.id },
            {
              countries: ["us", "us"],
            }
          )
        ).rejects.toThrowError(
          'Countries with codes: "us" are already assigned to a region'
        )
      })

      it("should fail updating the region if country is already used", async () => {
        const [createdRegion] = await service.create([
          {
            name: "North America",
            currency_code: "USD",
            countries: ["us", "ca"],
          },
          {
            name: "Americas",
            currency_code: "USD",
            countries: ["mx"],
          },
        ])

        await expect(
          service.update(
            { id: createdRegion.id },
            {
              countries: ["us", "mx"],
            }
          )
        ).rejects.toThrowError(
          'Countries with codes: "mx" are already assigned to a region'
        )
      })

      it("should unset the region ID on the country when deleting a region", async () => {
        const createdRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        await service.delete(createdRegion.id)

        const newRegion = await service.create({
          name: "North America",
          currency_code: "USD",
          countries: ["us", "ca"],
        })

        const resp = await service.retrieve(newRegion.id, {
          relations: ["countries"],
        })

        expect(resp.countries).toHaveLength(2)
      })
    })
  },
})