Merge pull request #2768 from github/robertbrignull/mocked-treeview

Use mockedObject for TreeView

extensions/ql-vscode/test/vscode-tests/no-workspace/model-editor/methods-usage/methods-usage-panel.test.ts

@@ -39,9 +39,9 @@ describe("MethodsUsagePanel", () => {
     const usage = createUsage();
 
     beforeEach(() => {
-      mockTreeView = {
+      mockTreeView = mockedObject<TreeView<unknown>>({
         reveal: jest.fn(),
-      } as unknown as TreeView<unknown>;
+      });
       jest.spyOn(window, "createTreeView").mockReturnValue(mockTreeView);
     });