srcset-natural-size-in-dynamic-iframe.html

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This WPT test may be referenced by the following Test IDs:
- /html/semantics/embedded-content/the-img-element/srcset-natural-size-in-dynamic-iframe.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>Image with srcset in dynamically created iframe should have non-zero natural dimensions</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<body>

<script>

async_test(t => {

    const iframe = document.createElement('iframe');

    iframe.onload = t.step_func(() => {

        const doc = iframe.contentDocument;

        doc.body.innerHTML = '<img srcset="/images/green-256x256.png 256w">';

        const image = doc.querySelector('img');

        image.onload = t.step_func_done(() => {

            assert_greater_than(image.naturalWidth, 0, 'naturalWidth should be greater than 0');

            assert_greater_than(image.naturalHeight, 0, 'naturalHeight should be greater than 0');

});

        image.onerror = t.unreached_func('Image should load successfully');

});

    document.body.appendChild(iframe);

}, 'Image with srcset inserted into a dynamic iframe should have non-zero natural dimensions');

</script>

</body>