Add test

Author: bernardobelchior

docs/data/charts/export/ExportChartAsImageNoSnap.tsx.preview

@@ -294,6 +294,21 @@ async function main() {
           });
         });
       });
+
+      it('should export a chart as PNG', async function test() {
+        const route = '/docs-charts-export/ExportChartAsImage';
+        const screenshotPath = path.resolve(screenshotDir, `.${route}PNG.png`);
+        await fse.ensureDir(path.dirname(screenshotPath));
+
+        await navigateToTest(route);
+
+        const downloadPromise = page.waitForEvent('download');
+        await page.getByRole('button', { name: 'Print' }).click();
+
+        const download = await downloadPromise;
+
+        await download.saveAs(screenshotPath);
+      });
     });
 
     // describe('DateTimePicker', () => {