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Diffstat (limited to 'testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-referrerpolicy-change.sub.html')
-rw-r--r-- | testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-referrerpolicy-change.sub.html | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-referrerpolicy-change.sub.html b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-referrerpolicy-change.sub.html new file mode 100644 index 0000000000..110c36cca7 --- /dev/null +++ b/testing/web-platform/tests/html/semantics/embedded-content/the-img-element/image-loading-lazy-referrerpolicy-change.sub.html @@ -0,0 +1,46 @@ +<!DOCTYPE html> +<head> + <title>Deferred loading=lazy images are fetched with the latest + `referrerpolicy` attribute</title> + <link rel="author" title="Dom Farolino" href="mailto:dom@chromium.org"> + <link rel="author" title="Raj T" href="mailto:rajendrant@chromium.org"> + <link rel="help" href="https://html.spec.whatwg.org/multipage/images.html#updating-the-image-data"> + <script src="/resources/testharness.js"></script> + <script src="/resources/testharnessreport.js"></script> + <script src="../resources/common.js"></script> +</head> + +<script> + const below_viewport_img = new ElementLoadPromise("below_viewport_img"); + + async_test(function(t) { + // At this point the image's #updating-the-image-data algorithm has been + // invoked, and the image request has been deferred. The deferred request + // was created with the default referrer policy, which will result in a + // `Referer` header being sent when the request is finally made. The request + // is also for an image that the server will send a broken response for if + // the request has a `Referer` header. + // While the request is deferred, we'll set the `referrerpolicy` attribute + // to `no-referrer`, which would cause the image request to succeed. Since + // `referrerpolicy` mutations trigger another #updating-the-image-data + // invocation (replacing the first one), when we scroll the image into view, + // the image should be fetched with no `Referer` header, and succeed. + window.addEventListener("load", t.step_func(() => { + below_viewport_img.element().referrerPolicy = "no-referrer"; + below_viewport_img.element().scrollIntoView(); + })); + + below_viewport_img.promise + .then(t.step_func_done()) + .catch(t.unreached_func("The image request should successfully load")) + }, "Test that when a deferred image is loaded, it uses the latest referrerpolicy"); +</script> + +<body> + <div style="height:1000vh;"></div> + <img id="below_viewport_img" + src="resources/referrer-checker-img.py?expected_referrer=" + loading="lazy" referrerpolicy="unsafe-url" + onload="below_viewport_img.resolve();" + onerror="below_viewport_img.reject();"> +</body> |