feat: refactor tests

Author: vladislavkeblysh

src/course-home/progress-tab/grades/grade-summary/GradeSummaryHeader.test.jsx

@@ -101,4 +101,27 @@ describe('GradeSummaryHeader', () => {
 
     document.body.removeChild(blurTarget);
   });
+
+  it('hides tooltip when Escape is pressed (covers handleKeyDown)', async () => {
+    renderComponent();
+
+    const iconButton = screen.getByRole('button', {
+      name: messages.gradeSummaryTooltipAlt.defaultMessage,
+    });
+
+    await userEvent.hover(iconButton);
+    await userEvent.click(iconButton);
+
+    await waitFor(() => {
+      expect(screen.getByText(messages.gradeSummaryTooltipBody.defaultMessage)).toBeInTheDocument();
+    });
+
+    fireEvent.keyDown(iconButton, { key: 'Escape', code: 'Escape' });
+
+    await userEvent.unhover(iconButton);
+
+    await waitFor(() => {
+      expect(screen.queryByText(messages.gradeSummaryTooltipBody.defaultMessage)).not.toBeInTheDocument();
+    });
+  });
 });