feat: GET customer group endpoint

integration-tests/api/__tests__/admin/customer-groups.js

@@ -85,4 +85,41 @@ describe("/admin/customer-groups", () => {
         })
     })
   })
+
+  describe("GET /admin/customer-groups", () => {
+    beforeEach(async () => {
+      try {
+        await adminSeeder(dbConnection)
+        await customerSeeder(dbConnection)
+      } catch (err) {
+        console.log(err)
+        throw err
+      }
+    })
+
+    afterEach(async () => {
+      const db = useDb()
+      await db.teardown()
+    })
+
+    it("gets customer group", async () => {
+      const api = useApi()
+
+      const id = "test-group-4"
+
+      const response = await api.get(`/admin/customer-groups/${id}`, {
+        headers: {
+          Authorization: "Bearer test_token",
+        },
+      })
+
+      expect(response.status).toEqual(200)
+      expect(response.data.customerGroup).toEqual(
+        expect.objectContaining({
+          id: "test-group-4",
+          name: "test-group",
+        })
+      )
+    })
+  })
 })

packages/medusa/src/api/routes/admin/customer-groups/__tests__/get-customer-group.ts

@@ -0,0 +1,27 @@
+import { IdMap } from "medusa-test-utils"
+import { request } from "../../../../../helpers/test-request"
+import { CustomerGroupServiceMock } from "../../../../../services/__mocks__/customer-group"
+
+describe("GET /customer-groups", () => {
+  let subject
+  const id = "123"
+
+  beforeAll(async () => {
+    subject = await request("GET", `/admin/customer-groups/${id}`, {
+      adminSession: {
+        jwt: {
+          userId: IdMap.getId("admin_user"),
+        },
+      },
+    })
+  })
+
+  it("returns 200", () => {
+    expect(subject.status).toEqual(200)
+  })
+
+  it("calls CustomerGroupService get", () => {
+    expect(CustomerGroupServiceMock.retrieve).toHaveBeenCalledTimes(1)
+    expect(CustomerGroupServiceMock.retrieve).toHaveBeenCalledWith(id)
+  })
+})

packages/medusa/src/api/routes/admin/customer-groups/get-customer-group.ts

@@ -0,0 +1,32 @@
+import { CustomerGroupService } from "../../../../services"
+
+/**
+ * @oas [get] /customer-group/{id}
+ * operationId: "GetCustomerGroups"
+ * summary: "Retrieve a CustomerGroup"
+ * description: "Retrieves a Customer Group."
+ * x-authenticated: true
+ * parameters:
+ *   - (path) id=* {string} The id of the Customer Group.
+ * tags:
+ *   - CustomerGroup
+ * responses:
+ *   200:
+ *     description: OK
+ *     content:
+ *       application/json:
+ *         schema:
+ *           properties:
+ *             customerGroup:
+ *               $ref: "#/components/schemas/customer-group"
+ */
+export default async (req, res) => {
+  const { id } = req.params
+  const customerGroupService: CustomerGroupService = req.scope.resolve(
+    "customerGroupService"
+  )
+
+  const customerGroup = await customerGroupService.retrieve(id)
+
+  res.json({ customerGroup })
+}

packages/medusa/src/api/routes/admin/customer-groups/index.ts

@@ -8,6 +8,7 @@ const route = Router()
 export default (app) => {
   app.use("/customer-groups", route)
 
+  route.get("/:id", middlewares.wrap(require("./get-customer-group").default))
   route.post("/", middlewares.wrap(require("./create-customer-group").default))
   return app
 }

packages/medusa/src/services/__mocks__/customer-group.js

@@ -6,6 +6,10 @@ export const CustomerGroupServiceMock = {
   create: jest.fn().mockImplementation((f) => {
     return Promise.resolve(f)
   }),
+
+  retrieve: jest.fn().mockImplementation((f) => {
+    return Promise.resolve(f)
+  }),
 }
 
 const mock = jest.fn().mockImplementation(() => {
@@ -13,3 +17,4 @@ const mock = jest.fn().mockImplementation(() => {
 })
 
 export default mock
+

packages/medusa/src/services/customer-group.ts

@@ -39,6 +39,25 @@ class CustomerGroupService extends BaseService {
     return cloned
   }
 
+  async retrieve(id: string, config = {}): Promise<CustomerGroup> {
+    const customerRepo = this.manager_.getCustomRepository(
+      this.customerGroupRepository_
+    )
+
+    const validatedId = this.validateId_(id)
+    const query = this.buildQuery_({ id: validatedId }, config)
+
+    const customerGroup = await customerRepo.findOne(query)
+    if (!customerGroup) {
+      throw new MedusaError(
+        MedusaError.Types.NOT_FOUND,
+        `CustomerGroup with ${id} was not found`
+      )
+    }
+
+    return customerGroup
+  }
+
   /**
    * Creates a customer group with the provided data.
    * @param {DeepPartial<CustomerGroup>} group - the customer group to create