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function make_test_url(type, policy, expected) {
if (type == "cross-origin")
return `url("http://{{hosts[][]}}:{{ports[http][1]}}/css/css-values/urls/support/image-referrerpolicy.py?expected_referrer=${expected}&origin=${location.origin}/&url=${document.URL}"${policy ? ` referrerpolicy(${policy})` : ``})`;
if (type == "same-origin")
return `url("http://{{hosts[][]}}:{{ports[http][0]}}/css/css-values/urls/support/image-referrerpolicy.py?expected_referrer=${expected}&origin=${location.origin}/&url=${document.URL}"${policy ? ` referrerpolicy(${policy})` : ``})`;
throw `Unknown type: ${type}`;
}
function test_image_referrer_policy(descriptor) {
var style = document.createElement("style");
style.innerHTML = `
.test {
width: 200px;
height: 200px;
background-color: blue;
background-image: ${make_test_url(descriptor.load_type, descriptor.referrer_policy, descriptor.expected_referrer)};
};`;
document.head.append(style);
}