chore: Move factories and helpers to a better place (#4551)

* chore: Move factories and helpers to a better place

* align factory product variant

* fix factory cart

* add simple store fac

* fix tests

* fix tests

* fix

* fix cart seeder

integration-tests/factories/simple-shipping-tax-rate-factory.ts

@@ -0,0 +1,48 @@
+import { DataSource } from "typeorm"
+import faker from "faker"
+import { ShippingTaxRate, TaxRate } from "@medusajs/medusa"
+
+type RateFactoryData = {
+  region_id: string
+  rate?: number | null
+  code?: string
+  name?: string
+}
+
+export type ShippingTaxRateFactoryData = {
+  shipping_option_id: string
+  rate: RateFactoryData | string
+}
+
+export const simpleShippingTaxRateFactory = async (
+  dataSource: DataSource,
+  data: ShippingTaxRateFactoryData,
+  seed?: number
+): Promise<ShippingTaxRate> => {
+  if (typeof seed !== "undefined") {
+    faker.seed(seed)
+  }
+
+  const manager = dataSource.manager
+
+  let rateId: string
+  if (typeof data.rate === "string") {
+    rateId = data.rate
+  } else {
+    const newRate = manager.create(TaxRate, {
+      region_id: data.rate.region_id,
+      rate: data.rate.rate,
+      code: data.rate.code || "sales_tax",
+      name: data.rate.name || "Sales Tax",
+    })
+    const rate = await manager.save(newRate)
+    rateId = rate.id
+  }
+
+  const toSave = manager.create(ShippingTaxRate, {
+    shipping_option_id: data.shipping_option_id,
+    rate_id: rateId,
+  })
+
+  return await manager.save(toSave)
+}