image-srcset-duplicate-elimination.html

<!DOCTYPE html>
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script>
function runTest() {
    var t = async_test("duplicate density candidate elimination");
    var img = document.body.appendChild(new Image());
    img.onload = t.step_func(function() {
        var dynamicImageSrc = document.getElementById("dynimg").currentSrc;
        var isBlue = (dynamicImageSrc.indexOf("blue_rect.jpg") != -1);
        var is4x = (dynamicImageSrc.indexOf("image-set-4x.png") != -1);
        assert_false(isBlue);
        assert_true(is4x);
        t.done();
    });
    img.id = "dynimg";
    img.srcset = "resources/image-set-4x.png 1x, resources/blue_rect.jpg 1x";
};
</script>
<img src="resources/blue_rect.jpg" onload="runTest()">

chromium/third_party/blink/web_tests/fast/dom/HTMLImageElement/image-srcset-duplicate-elimination.html