Chore/integration tests modules utils (#6581)

new wrapper for medusa integration tests.
for now it is only applied to the modules directory, but it could be used in the api integration tests or any other integrations that requires a db and a server up and running. 

It is not perfect, but I wanted to have something working and centralised before improving it, also avoiding too many conflicts with other prs

integration-tests/modules/__tests__/customer-group/admin/batch-remove-customers.ts

@@ -1,13 +1,7 @@
-import { initDb, useDb } from "../../../../environment-helpers/use-db"
-
 import { ICustomerModuleService } from "@medusajs/types"
 import { ModuleRegistrationName } from "@medusajs/modules-sdk"
-import adminSeeder from "../../../../helpers/admin-seeder"
 import { createAdminUser } from "../../../helpers/create-admin-user"
-import { getContainer } from "../../../../environment-helpers/use-container"
-import path from "path"
-import { startBootstrapApp } from "../../../../environment-helpers/bootstrap-app"
-import { useApi } from "../../../../environment-helpers/use-api"
+import { medusaIntegrationTestRunner } from "medusa-test-utils"
 
 jest.setTimeout(50000)
 
@@ -16,78 +10,68 @@ const adminHeaders = {
   headers: { "x-medusa-access-token": "test_token" },
 }
 
-describe("DELETE /admin/customer-groups/:id/customers/remove", () => {
-  let dbConnection
-  let appContainer
-  let shutdownServer
-  let customerModuleService: ICustomerModuleService
+medusaIntegrationTestRunner({
+  env,
+  testSuite: ({ dbConnection, getContainer, api }) => {
+    describe("DELETE /admin/customer-groups/:id/customers/remove", () => {
+      let appContainer
+      let customerModuleService: ICustomerModuleService
 
-  beforeAll(async () => {
-    const cwd = path.resolve(path.join(__dirname, "..", "..", ".."))
-    dbConnection = await initDb({ cwd, env } as any)
-    shutdownServer = await startBootstrapApp({ cwd, env })
-    appContainer = getContainer()
-    customerModuleService = appContainer.resolve(
-      ModuleRegistrationName.CUSTOMER
-    )
-  })
+      beforeAll(async () => {
+        appContainer = getContainer()
+        customerModuleService = appContainer.resolve(
+          ModuleRegistrationName.CUSTOMER
+        )
+      })
 
-  afterAll(async () => {
-    const db = useDb()
-    await db.shutdown()
-    await shutdownServer()
-  })
+      beforeEach(async () => {
+        await createAdminUser(dbConnection, adminHeaders, appContainer)
+      })
 
-  beforeEach(async () => {
-    await createAdminUser(dbConnection, adminHeaders)
-  })
+      it("should batch delete customers from a group", async () => {
+        const group = await customerModuleService.createCustomerGroup({
+          name: "VIP",
+        })
+        const customers = await customerModuleService.create([
+          {
+            first_name: "Test",
+            last_name: "Test",
+          },
+          {
+            first_name: "Test2",
+            last_name: "Test2",
+          },
+          {
+            first_name: "Test3",
+            last_name: "Test3",
+          },
+        ])
 
-  afterEach(async () => {
-    const db = useDb()
-    await db.teardown()
-  })
+        await customerModuleService.addCustomerToGroup(
+          customers.map((c) => ({
+            customer_id: c.id,
+            customer_group_id: group.id,
+          }))
+        )
 
-  it("should batch delete customers from a group", async () => {
-    const api = useApi() as any
+        const response = await api.post(
+          `/admin/customer-groups/${group.id}/customers/remove`,
+          {
+            customer_ids: customers.map((c) => ({ id: c.id })),
+          },
+          adminHeaders
+        )
 
-    const group = await customerModuleService.createCustomerGroup({
-      name: "VIP",
+        expect(response.status).toEqual(200)
+
+        const updatedGroup = await customerModuleService.retrieveCustomerGroup(
+          group.id,
+          {
+            relations: ["customers"],
+          }
+        )
+        expect(updatedGroup.customers?.length).toEqual(0)
+      })
     })
-    const customers = await customerModuleService.create([
-      {
-        first_name: "Test",
-        last_name: "Test",
-      },
-      {
-        first_name: "Test2",
-        last_name: "Test2",
-      },
-      {
-        first_name: "Test3",
-        last_name: "Test3",
-      },
-    ])
-
-    await customerModuleService.addCustomerToGroup(
-      customers.map((c) => ({ customer_id: c.id, customer_group_id: group.id }))
-    )
-
-    const response = await api.post(
-      `/admin/customer-groups/${group.id}/customers/remove`,
-      {
-        customer_ids: customers.map((c) => ({ id: c.id })),
-      },
-      adminHeaders
-    )
-
-    expect(response.status).toEqual(200)
-
-    const updatedGroup = await customerModuleService.retrieveCustomerGroup(
-      group.id,
-      {
-        relations: ["customers"],
-      }
-    )
-    expect(updatedGroup.customers?.length).toEqual(0)
-  })
+  },
 })