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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<title>This test validates the value of encodedBodySize in certain situations.</title>
<link rel="help" href="http://www.w3.org/TR/resource-timing/#performanceresourcetiming"/>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function test_resource_timing_for_content_length({actualContentLength, lengthHeader}, title) {
promise_test(async t => {
const content = new Array(actualContentLength).fill('x').join('')
const url = `resources/resource-timing-content-length.py?content=${content}&length=${lengthHeader}`
fetch(url)
const entry = await new Promise(resolve => new PerformanceObserver((entryList, observer) => {
observer.disconnect()
resolve(entryList.getEntries()[0])
}).observe({entryTypes: ['resource']}))
const expectedContentLength = Number.isInteger(lengthHeader) ? Math.min(actualContentLength, lengthHeader) : actualContentLength
assert_equals(entry.encodedBodySize, expectedContentLength)
}, title);
}
test_resource_timing_for_content_length({actualContentLength: 3, lengthHeader: 'auto'},
"encodedBodySize should be equal to the actual byte size of the content")
test_resource_timing_for_content_length({actualContentLength: 13, lengthHeader: 'none'},
"encodedBodySize should be equal to the actual byte size of the content when no header present")
test_resource_timing_for_content_length({actualContentLength: 7, lengthHeader: 3},
"encodedBodySize should be equal to the actual byte size of the content when header value is lower than actual content")
test_resource_timing_for_content_length({actualContentLength: 8, lengthHeader: 40},
"encodedBodySize should be equal to the actual byte size of the content when header value is higher than actual content")
</script>
</html>
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