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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/cssom/getComputedStyle-getter-v-properties.tentative.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>CSSStyleDeclaration index getter v. attributes</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="testElement"></div>
<script>
/* per spec, the indexed getter gives all supported longhand properties, whereas
attributes are created for all supported properties; this implies the indexed
getter gives a subset of the attributes */
const decl = window.getComputedStyle(document.getElementById("testElement"));
const declItems = Array.from(decl).sort();
const shorthands = ['border-top', 'border-right', 'border-bottom', 'border-left', 'border', 'font'];
const non_shorthands = ['margin-top', 'font-size', 'max-width', 'width'];
for (const prop of shorthands) {
test(() => {
assert_true(prop in decl, "getComputedStyle attribute");
assert_false(declItems.includes(prop), "getComputedStyle indexed getter");
}, prop);
}
for (const prop of non_shorthands) {
test(() => {
assert_true(prop in decl, "getComputedStyle attribute");
assert_true(declItems.includes(prop), "getComputedStyle indexed getter");
}, prop);
}
</script>