<!DOCTYPE html> <html reftest-zoom="2" class="reftest-wait"> <head> <script type="application/javascript"> // reftest-zoom is only applied at onload, so ensure the source-selection // has happened after that function clearWait() { document.documentElement.classList.remove("reftest-wait"); } window.addEventListener("load", function() { setTimeout(function() { var img = document.querySelector("img"); img.onload = clearWait; img.onerror = clearWait; img.src = img.src; }, 0); }); </script> </head> <body> <img srcset="200.png 2x" src="50.png"> <p>Test default source provided in src, with no default/1x in srcset</p> </body> </html>