switch spy to mock

tests/unit/components/ObsEdit/ObsEdit.test.js

@@ -2,7 +2,6 @@ import { screen, waitFor } from "@testing-library/react-native";
 import ObsEdit from "components/ObsEdit/ObsEdit";
 import React from "react";
 import { View } from "react-native";
-import * as useCurrentUser from "sharedHooks/useCurrentUser";
 import useStore from "stores/useStore";
 import factory from "tests/factory";
 import { renderComponent, wrapInNavigationContainer } from "tests/helpers/render";
@@ -27,6 +26,11 @@ jest.mock( "sharedHooks/useWatchPosition", () => ( {
 
 const mockUser = factory( "LocalUser" );
 
+jest.mock( "sharedHooks/useCurrentUser", () => ( {
+  __esModule: true,
+  default: () => mockUser
+} ) );
+
 const mockMutate = jest.fn();
 jest.mock( "sharedHooks/useAuthenticatedMutation", () => ( {
   __esModule: true,
@@ -49,7 +53,6 @@ const mockObservation = factory( "LocalObservation", {
 
 describe( "ObsEdit", () => {
   beforeEach( ( ) => {
-    jest.spyOn( useCurrentUser, "default" ).mockImplementation( ( ) => mockUser );
     useStore.setState( {
       currentObservation: mockObservation,
       observations: [mockObservation]