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function test_computed_style_aspect_ratio(tag, attributes, expected) {
test(function() {
var elem = document.createElement(tag);
for (name in attributes) {
let val = attributes[name];
if (val !== null)
elem.setAttribute(name, val);
}
document.body.appendChild(elem);
let aspectRatio = getComputedStyle(elem).aspectRatio;
assert_equals(aspectRatio, expected);
elem.remove();
}, `Computed style test: ${tag} with ${JSON.stringify(attributes)}`);
}