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Diffstat (limited to 'testing/web-platform/tests/resource-timing/304-response-recorded.html')
-rw-r--r-- | testing/web-platform/tests/resource-timing/304-response-recorded.html | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/testing/web-platform/tests/resource-timing/304-response-recorded.html b/testing/web-platform/tests/resource-timing/304-response-recorded.html new file mode 100644 index 0000000000..9e1bb3045c --- /dev/null +++ b/testing/web-platform/tests/resource-timing/304-response-recorded.html @@ -0,0 +1,53 @@ +<!DOCTYPE html> +<html> +<head> +<meta charset="utf-8" /> +<title>Resource Timing - cached resources generate performance entries</title> +<link rel="author" title="Google" href="http://www.google.com/" /> +<link rel="help" + href="https://www.w3.org/TR/resource-timing-2/#resources-included-in-the-performanceresourcetiming-interface"/> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="resources/entry-invariants.js"></script> +<script src="resources/resource-loaders.js"></script> +</head> +<body> +<h1>Description</h1> +<p>This test validates that a 304 Not Modified resource appears in the +Performance Timeline.</p> +<script> +// Need to fetch the same resource twice; the first will get a 200 response but +// the second request should be cached and get a 304. +promise_test(async () => { + performance.clearResourceTimings(); + + const unique = Math.random(); + const path = `resources/fake_responses.py?tag=${unique}`; + + await load.xhr_sync(path); + await load.xhr_sync(path, {"If-None-Match": `${unique}`}); + const entries = await new Promise(resolve => { + const accumulator = []; + new PerformanceObserver(entry_list => { + entry_list.getEntries().forEach(entry => { + accumulator.push(entry); + }); + if (accumulator.length >= 2) { + resolve(accumulator); + } + }).observe({'type': 'resource', 'buffered': true}); + }); + + + if (entries.length != 2) { + throw new Error(`Expecting 2 but got ${entries.length} entries`); + } + + assert_equals(entries[0].name, entries[1].name, + "Both entries should have the same name"); + invariants.assert_tao_pass_no_redirect_http(entries[0]); + invariants.assert_tao_pass_304_not_modified_http(entries[1]); +}, "304 responses should still show up in the PerformanceTimeline"); +</script> +</body> +</html> |