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Diffstat (limited to 'dom/tests/browser/perfmetrics/unresponsive.html')
| -rw-r--r-- | dom/tests/browser/perfmetrics/unresponsive.html | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/dom/tests/browser/perfmetrics/unresponsive.html b/dom/tests/browser/perfmetrics/unresponsive.html new file mode 100644 index 0000000000..e139eb7f9d --- /dev/null +++ b/dom/tests/browser/perfmetrics/unresponsive.html @@ -0,0 +1,21 @@ +<!DOCTYPE html> +<html lang="en" dir="ltr"> +<head> + <meta charset="utf-8"> + <script type="text/javascript"> + + function fn() { + let start = Date.now(); + while (Date.now() - start < 5000) + ; // do nothing + setTimeout(fn, 0); + } + + setTimeout(fn, 10); + + </script> +</head> +<body> + <h1>An unresponsive page</h1> +</body> +</html> |