test: fix SequenceNavigationTabs test

src/courseware/course/sequence/sequence-navigation/SequenceNavigationTabs.test.jsx

@@ -33,7 +33,7 @@ describe('Sequence Navigation Tabs', () => {
     mockData = {
       // Blocks are numbered from 1 in the UI, so we're decreasing this by 1 to have correct block's ID in the array.
       unitId: unitBlocks[activeBlockNumber - 1].id,
-      onNavigate: () => {},
+      onNavigate: () => { },
       showCompletion: false,
       unitIds: unitBlocks.map(unit => unit.id),
     };
@@ -48,11 +48,10 @@ describe('Sequence Navigation Tabs', () => {
 
   it('renders unit buttons and dropdown button', async () => {
     let container = null;
+    useIndexOfLastVisibleChild.mockReturnValue([-1, null, null]);
+    const booyah = render(<SequenceNavigationTabs {...mockData} />);
     await act(async () => {
-      useIndexOfLastVisibleChild.mockReturnValue([-1, null, null]);
-      const booyah = render(<SequenceNavigationTabs {...mockData} />, { wrapWithRouter: true });
       container = booyah.container;
-
       const dropdownToggle = container.querySelector('.dropdown-toggle');
       // We need to await this click here, which requires us to await the `act` as well above.
       // https://github.com/testing-library/react-testing-library/issues/535