feat: customer groups react hooks (#1153)

* fix: msw handlers for medusa-react storybook

* feat: add customer groups query hooks

* feat: add create/update customer groups hooks

* feat: add customer group batch  hooks

* feat: add test files, fix import

* add customer groups fixture

* add customer gorup mock endpoints

* add test cases

* add hook comments

* fix: typos

* fix: comments refactor

* fix: comment

Co-authored-by: fPolic <frane@medusajs.com>

packages/medusa-react/test/hooks/admin/customer-groups/queries.test.ts

@@ -0,0 +1,34 @@
+import { renderHook } from "@testing-library/react-hooks"
+
+import { useAdminCustomerGroup, useAdminCustomerGroups } from "../../../../src"
+import { fixtures } from "../../../../mocks/data"
+import { createWrapper } from "../../../utils"
+
+describe("useAdminCustomerGroup hook", () => {
+  test("returns a customer group", async () => {
+    const group = fixtures.get("customer_group")
+    const { result, waitFor } = renderHook(
+      () => useAdminCustomerGroup(group.id),
+      {
+        wrapper: createWrapper(),
+      }
+    )
+
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.response.status).toEqual(200)
+    expect(result.current.customer_group).toEqual(group)
+  })
+
+  test("returns a list of customer groups", async () => {
+    const groups = fixtures.list("customer_group")
+    const { result, waitFor } = renderHook(() => useAdminCustomerGroups(), {
+      wrapper: createWrapper(),
+    })
+
+    await waitFor(() => result.current.isSuccess)
+
+    expect(result.current.response.status).toEqual(200)
+    expect(result.current.customer_groups).toEqual(groups)
+  })
+})