Add test for fixedCacheKey creating new cache entry in useMutation-fixedCacheKey.test.tsx

Author: riqts

packages/toolkit/src/query/tests/useMutation-fixedCacheKey.test.tsx

@@ -8,8 +8,11 @@ import {
   waitFor,
   act,
 } from '@testing-library/react'
+import { vi } from 'vitest'
 
 describe('fixedCacheKey', () => {
+  const onNewCacheEntry = vi.fn()
+
   const api = createApi({
     async baseQuery(arg: string | Promise<string>) {
       return { data: await arg }
@@ -354,4 +357,34 @@ describe('fixedCacheKey', () => {
     expect(getByTestId(c1, 'status').textContent).toBe('fulfilled')
     expect(getByTestId(c1, 'data').textContent).toBe('this should be visible')
   })
+
+  test('using fixedCacheKey should create a new cache entry', async () => {
+    api.injectEndpoints({
+      overrideExisting: true,
+      endpoints: (build) => ({
+        send: build.mutation<string, string | Promise<string>>({
+          query: (arg) => arg,
+          onCacheEntryAdded(arg, { }) {
+            onNewCacheEntry(arg)
+          },
+        }),
+      }),
+    })
+
+    render(<Component name="C1" fixedCacheKey={"testKey"} />, {
+      wrapper: storeRef.wrapper,
+    })
+
+    let c1 = screen.getByTestId('C1')
+
+    expect(getByTestId(c1, 'status').textContent).toBe('uninitialized')
+    expect(getByTestId(c1, 'originalArgs').textContent).toBe('undefined')
+
+    await act(async () => {
+      getByTestId(c1, 'trigger').click()
+      await Promise.resolve()
+    })
+
+    expect(onNewCacheEntry).toHaveBeenCalledWith('C1')
+  })
 })