single-download-preload.html | Explore in Territory

<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/preload/resources/preload_helper.js"></script>
<script>
    var t = async_test('Makes sure that preloaded resources are not downloaded again when used');
</script>
<link rel=preload href="resources/dummy.js?single-download-preload" as=script>
<link rel=preload href="resources/dummy.css?single-download-preload" as=style>
<link rel=preload href="resources/square.png?single-download-preload" as=image>
<link rel=preload href="resources/square.png?background&single-download-preload" as=image>
<link rel=preload href="/fonts/CanvasTest.ttf?single-download-preload" as=font crossorigin>
<link rel=preload href="resources/white.mp4?single-download-preload" as=video>
<link rel=preload href="resources/sound_5.oga?single-download-preload" as=audio>
<link rel=preload href="resources/foo.vtt?single-download-preload" as=track>
<link rel=preload href="resources/dummy.xml?foo=bar" as=foobarxmlthing>
<link rel=preload href="resources/dummy.xml?single-download-preload">
<body>
<style>
    #background {
        width: 200px;
        height: 200px;
        background-image: url(resources/square.png?backgroundi&single-download-preload);
    }
    @font-face {
      font-family:myFont;
      src: url(/fonts/CanvasTest.ttf?single-download-preload);
    }
    span { font-family: myFont, Arial; }
</style>
<link rel="stylesheet" href="resources/dummy.css?single-download-preload">
<script src="resources/dummy.js?single-download-preload"></script>
<div id="background"></div>
<img src="resources/square.png?single-download-preload">
<video src="resources/white.mp4?single-download-preload">
    <track kind=subtitles src="resources/foo.vtt?single-download-preload" srclang=en>
</video>
<audio src="resources/sound_5.oga?single-download-preload"></audio>
<script>
    var xhr = new XMLHttpRequest();
    xhr.open("GET", "resources/dummy.xml?single-download-preload");
    xhr.send();

    window.addEventListener("load", t.step_func(function() {
        verifyPreloadAndRTSupport();
        setTimeout(t.step_func(function() {
            verifyLoadedAndNoDoubleDownload("resources/dummy.js?single-download-preload");
            verifyLoadedAndNoDoubleDownload("resources/dummy.css?single-download-preload");
            verifyLoadedAndNoDoubleDownload("resources/square.png?single-download-preload");
            verifyLoadedAndNoDoubleDownload("resources/square.png?background&single-download-preload");
            verifyLoadedAndNoDoubleDownload("/fonts/CanvasTest.ttf?single-download-preload");
            verifyNumberOfResourceTimingEntries("resources/dummy.xml?foobar", 0);
            verifyLoadedAndNoDoubleDownload("resources/foo.vtt?single-download-preload");
            verifyLoadedAndNoDoubleDownload("resources/dummy.xml?single-download-preload");
            // FIXME: We should verify for video and audio as well, but they seem to (flakily?) trigger multiple partial requests.
            t.done();
        }), 3000);
    }));
</script>
<span>PASS - this text is here just so that the browser will download the font.</span>
chromium/third_party/blink/web_tests/external/wpt/preload/single-download-preload.html
