diff --git a/src/Holding/CreateHolding/CreateHolding.test.js b/src/Holding/CreateHolding/CreateHolding.test.js
index 6d0af4af5..a45633c2a 100644
--- a/src/Holding/CreateHolding/CreateHolding.test.js
+++ b/src/Holding/CreateHolding/CreateHolding.test.js
@@ -1,3 +1,4 @@
+/* eslint-disable import/no-unresolved */
 import '../../../test/jest/__mock__';
 
 import { MemoryRouter } from 'react-router-dom';
@@ -5,21 +6,17 @@ import { QueryClient, QueryClientProvider } from 'react-query';
 import { render, screen } from '@testing-library/react';
 import { Promise } from 'core-js';
 import { instance } from '../../../test/fixtures/instance';
-import {
-  useHolding,
-  useInstance,
-} from '../../common/hooks';
+import { useHolding, useInstance } from '../../common/hooks';
 import { useHoldingMutation } from '../../hooks';
 import HoldingsForm from '../../edit/holdings/HoldingsForm';
 import CreateHolding from './CreateHolding';
 
-
 jest.mock('../../edit/holdings/HoldingsForm', () => jest.fn().mockReturnValue('HoldingsForm'));
 jest.mock('../../hooks', () => ({
   ...jest.requireActual('../../hooks'),
-  useCallout: jest.fn().mockReturnValue({ sendCallout: jest.fn() }),
   useHoldingMutation: jest.fn().mockReturnValue({ mutateHolding: jest.fn() }),
 }));
+jest.mock('../../hooks/useCallout', () => jest.fn().mockReturnValue({ sendCallout: jest.fn() }));
 jest.mock('../../common/hooks', () => ({
   ...jest.requireActual('../../common/hooks'),
   useInstance: jest.fn().mockReturnValue({ instance: {}, isLoading: false }),
@@ -31,32 +28,24 @@ const defaultProps = {
   instanceId: instance.id,
   holdingId: 'holdingId',
   referenceData: {},
-  mutator:{
-    GET:jest.fn().mockReturnValue({}),
-    POST:jest.fn().mockReturnValue({}),
+  mutator: {
+    GET: jest.fn(() => Promise.resolve({ data: {} })),
+    POST: jest.fn(() => Promise.resolve({ data: {} })),
     holding: {
-      POST:jest.fn(() => Promise.resolve({ data:{} }))
+      POST: jest.fn(() => Promise.resolve({ data: {} })),
     },
-  }
+  },
 };
 
 const queryClient = new QueryClient();
 
 const wrapper = ({ children }) => (
   <MemoryRouter>
-    <QueryClientProvider client={queryClient}>
-      {children}
-    </QueryClientProvider>
+    <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>
   </MemoryRouter>
 );
 
-const renderCreateHolding = (props = {}) => render(
-  <CreateHolding
-    {...defaultProps}
-    {...props}
-  />,
-  { wrapper },
-);
+const renderCreateHolding = (props = {}) => render(<CreateHolding {...defaultProps} {...props} />, { wrapper });
 
 describe('CreateHolding', () => {
   const mockMutate = jest.fn();
@@ -64,7 +53,9 @@ describe('CreateHolding', () => {
   beforeEach(() => {
     useInstance.mockClear();
     useHolding.mockClear();
-    useHoldingMutation.mockClear().mockReturnValue({ mutateHolding: mockMutate });
+    useHoldingMutation
+      .mockClear()
+      .mockReturnValue({ mutateHolding: mockMutate });
   });
 
   it('should render HoldingsForm', () => {
@@ -82,7 +73,10 @@ describe('CreateHolding', () => {
   });
 
   it('should call holding mutation when the holding form is submitted', () => {
+    useInstance.mockReturnValue({ isLoading: false, instance: { id: 0 } });
+
     renderCreateHolding();
     HoldingsForm.mock.calls[0][0].onSubmit();
+    expect(defaultProps.mutator.holding.POST).toBeCalled();
   });
 });