56 lines
3.2 KiB
HTML
56 lines
3.2 KiB
HTML
<!DOCTYPE html>
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<title>Makes sure that Link headers preload images with imagesrcset/imagesizes attributes.</title>
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<link rel="help" href="https://github.com/w3c/preload/issues/120">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/preload/resources/preload_helper.js"></script>
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<body>
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<script>
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setup({single_test: true});
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var iterations = 0;
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var expectation = new Array(10).fill(0);
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if (window.devicePixelRatio < 1.5) {
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expectation[0] = expectation[5] = expectation[8] = 1;
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} else if (window.devicePixelRatio >= 1.5) {
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expectation[1] = expectation[6] = expectation[9] = 1;
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}
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function check_finished() {
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if (numberOfResourceTimingEntries('resources/square.png?from-header&1x') == expectation[0] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&2x') == expectation[1] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&3x') == expectation[2] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&base') == expectation[3] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&200') == expectation[4] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&400') == expectation[5] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&800') == expectation[6] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&150') == expectation[7] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&300') == expectation[8] &&
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numberOfResourceTimingEntries('resources/square.png?from-header&600') == expectation[9]) {
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done();
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}
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iterations++;
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if (iterations == 10) {
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// At least one is expected to fail, but this should give details to the exact failure(s).
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&1x', expectation[0]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&2x', expectation[1]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&3x', expectation[2]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&base', expectation[3]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&200', expectation[4]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&400', expectation[5]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&800', expectation[6]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&150', expectation[7]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&300', expectation[8]);
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verifyNumberOfResourceTimingEntries('resources/square.png?from-header&600', expectation[9]);
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done();
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} else {
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step_timeout(check_finished, 500);
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}
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}
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window.addEventListener("load", function() {
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verifyPreloadAndRTSupport();
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step_timeout(check_finished, 500);
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});
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</script>
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</body>
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