test: increase test coverage

src/generic/data/apiHooks.js

@@ -46,6 +46,10 @@ export const useStudioHomeData = () => useQuery({
 
 /**
  * Are the tagging/taxonomy features enabled?
+ *
+ * TODO: This is temporary, for the Open edX Redwood release. Sometime post-Redwood pre-Sumac (and after being enabled
+ * for a while on edx.org), this should be removed and the tagging/taxonomy functionality always enabled.
+ *
  * @returns {boolean} Whether they are enabled (default true)
  */
 export const useTaggingFeaturesEnabled = () => {

src/taxonomy/taxonomy-detail/TaxonomyDetailPage.test.jsx

@@ -13,6 +13,7 @@ import TaxonomyDetailPage from './TaxonomyDetailPage';
 let store;
 const mockNavigate = jest.fn();
 const mockMutate = jest.fn();
+const mockTaggingFeaturesEnabled = jest.fn();
 let axiosMock;
 
 jest.mock('react-router-dom', () => ({
@@ -21,11 +22,16 @@ jest.mock('react-router-dom', () => ({
     taxonomyId: '1',
   }),
   useNavigate: () => mockNavigate,
+  Navigate: jest.fn(({ to }) => `[Navigate: Redirected to ${to}]`),
 }));
 jest.mock('../data/apiHooks', () => ({
   ...jest.requireActual('../data/apiHooks'),
   useDeleteTaxonomy: () => mockMutate,
 }));
+jest.mock('../../generic/data/apiHooks', () => ({
+  ...jest.requireActual('../../generic/data/apiHooks'),
+  useTaggingFeaturesEnabled: () => mockTaggingFeaturesEnabled(),
+}));
 
 jest.mock('./TaxonomyDetailSideCard', () => jest.fn(() => <>Mock TaxonomyDetailSideCard</>));
 jest.mock('../tag-list/TagListTable', () => jest.fn(() => <>Mock TagListTable</>));
@@ -54,6 +60,7 @@ describe('<TaxonomyDetailPage />', () => {
     });
     store = initializeStore();
     axiosMock = new MockAdapter(getAuthenticatedHttpClient());
+    mockTaggingFeaturesEnabled.mockReturnValue(true);
   });
 
   afterEach(() => {
@@ -62,6 +69,12 @@ describe('<TaxonomyDetailPage />', () => {
     queryClient.clear();
   });
 
+  it('redirects to Studio home if the tagging feature is disabled', () => {
+    mockTaggingFeaturesEnabled.mockReturnValue(false);
+    const doc = render(<RootWrapper />);
+    expect(doc.asFragment().textContent).toEqual('[Navigate: Redirected to /home]');
+  });
+
   it('shows the spinner before the query is complete', () => {
     // Use unresolved promise to keep the Loading visible
     axiosMock.onGet(apiUrls.taxonomy(1)).reply(() => new Promise());