| <!DOCTYPE HTML> |
| <html> |
| <head> |
| <meta charset="utf-8"> |
| <meta name="timeout" content="long"> |
| <title>Detect simple soft navigation.</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="resources/soft-navigation-helper.js"></script> |
| </head> |
| <body> |
| <main id=main> |
| <a id=link>Click me!</a> |
| </main> |
| <script> |
| const link = document.getElementById("link"); |
| |
| testSoftNavigation({ |
| addContent: async () => { |
| await addImageToMain('green-16x16.png'); |
| }, |
| link: link, |
| clicks: 52, |
| extraValidations: async (entries, options)=>{ |
| if (!performance.softNavPaintMetricsSupported) { |
| return; |
| } |
| const [paint_entries, paint_options] = await new Promise(resolve => { |
| new PerformanceObserver((list, obs, options) => |
| resolve([list.getEntries(), options])).observe( |
| {type: 'paint', buffered: true}); |
| }); |
| assert_equals(options['droppedEntriesCount'], 2); |
| assert_equals(paint_options['droppedEntriesCount'], 4); |
| }, |
| test: "Test that a soft navigation entries get dropped when buffer limits" |
| + " get exceeded."}); |
| </script> |
| </body> |
| </html> |