691b82d9fb
Automatic update from web-platform-tests fix: attempt to further deflake prefetching test Test did not properly filter non-resource performance events like paint and longtask. Bug: 901056, 1164166 Change-Id: Ib1b9737b7e720f721e8e25c5275bffe8aab5b7f4 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2623208 Reviewed-by: Mason Freed <masonfreed@chromium.org> Commit-Queue: Richard Townsend <richard.townsend@arm.com> Cr-Commit-Position: refs/heads/master@{#842234} -- wpt-commits: 3918694d1b9189a3b9ca4f5bdc888e5370d52eb0 wpt-pr: 27137
48 lines
2.3 KiB
HTML
48 lines
2.3 KiB
HTML
<!DOCTYPE html>
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<title>Ensures content delivered with Content-Type: text/plain header is not prefetched</title>
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<!-- Regression test for https://crbug.com/1160665 -->
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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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window.addEventListener("load", function() {
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verifyPreloadAndRTSupport();
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// This test works by loading a text/plain iframe containing a <script> tag.
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// It then injects some post-load JavaScript to serialize the Performance API
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// data and pass it back to this document.
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var prefetchingIframe = document.getElementById('prefetching-frame');
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window.addEventListener("message", function(msg) {
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// Parse the Performance API data passed from the plain text iframe.
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const entries = JSON.parse(msg.data);
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const resource_types = [];
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for (const entry of entries) {
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resource_types.push(entry.entryType);
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}
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// If preloading is working correctly, should only see the text document
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// represented in the performance information. A 'resource' type indicates
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// that we've prefetched something.
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let resource_found = false;
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for (const t of resource_types) {
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if (t == "resource") {
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resource_found = true;
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break;
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}
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}
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assert_false(resource_found, "no resources should be present");
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done();
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});
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prefetchingIframe.addEventListener('load', function() {
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// Pass performance API info back to this document, process in above event handler.
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const passMsg = 'parent.postMessage(JSON.stringify(performance.getEntries()));';
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prefetchingIframe.contentWindow.eval(passMsg);
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});
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// Start the iframe load.
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prefetchingIframe.src = "avoid-prefetching-on-text-plain-inner.html";
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});
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</script>
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<iframe id="prefetching-frame"></iframe>
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</body>
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