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<!doctype html>
<html>
<head>
<meta http-equiv="Content-Security-Policy" content="style-src 'self' 'sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='; script-src 'self' 'unsafe-inline'">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
var t = async_test("Inline injected style without text content should be allowed");
document.addEventListener("securitypolicyviolation", t.unreached_func("Should not trigger a security policy violation"));
t.done();
const style_null_child = document.createElement("style");
document.head.appendChild(style_null_child);
test(function() {
assert_not_equals(style_null_child.sheet, undefined, "style_null_child should have a stylesheet");
assert_class_string(style_null_child.sheet, "CSSStyleSheet");
}, "Inline style sheet should be created with null child node");
const style_empty_child = document.createElement("style");
style_empty_child.appendChild(document.createTextNode(""));
document.head.appendChild(style_empty_child);
test(function() {
assert_not_equals(style_empty_child.sheet, undefined, "style_empty_child should have a stylesheet");
assert_class_string(style_empty_child.sheet, "CSSStyleSheet");
}, "Inline style should be created with empty-string child node");
const { sheet } = style_empty_child;
sheet.insertRule("#content { margin-left: 2px; }");
</script>
</head>
<body>
<div id='log'></div>
<div id="content">Lorem ipsum</div>
<script>
test(function() {
var contentEl = document.getElementById("content");
var background_color = getComputedStyle(contentEl).getPropertyValue('margin-left');
assert_equals(background_color, "2px");
}, "Inline style should be applied");
</script>
</body>
</html>
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