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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Overflow Test: Overflow longhand accepts two values</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<link rel="author" title="Emilio Cobos Álvarez <emilio@crisal.io>">
<link rel="help" href="https://drafts.csswg.org/css-overflow/#propdef-overflow">
<div id="test-div"></div>
<script>
let div = document.getElementById("test-div");
function testOverflowShorthand(x, y) {
test(function() {
div.style.overflowX = x;
div.style.overflowY = y;
let expectedX = getComputedStyle(div).overflowX;
let expectedY = getComputedStyle(div).overflowY;
let expectedComputedSerialization = expectedX == expectedY ? expectedX : `${expectedX} ${expectedY}`;
let expectedSpecifiedSerialization = x == y ? x : `${x} ${y}`;
assert_equals(div.style.overflow, expectedSpecifiedSerialization);
assert_equals(getComputedStyle(div).overflow, expectedComputedSerialization);
div.style.overflowX = "";
div.style.overflowY = "";
assert_equals(div.style.overflow, "");
div.style.overflow = `${x} ${y}`;
assert_equals(div.style.overflow, expectedSpecifiedSerialization);
assert_equals(div.style.overflowX, x);
assert_equals(div.style.overflowY, y);
assert_equals(getComputedStyle(div).overflow, expectedComputedSerialization);
assert_equals(getComputedStyle(div).overflowX, expectedX);
assert_equals(getComputedStyle(div).overflowY, expectedY);
}, `overflow: ${x} ${y} works`);
}
let OVERFLOW_VALUES = [ "auto", "hidden", "scroll", "visible" ];
for (let x of OVERFLOW_VALUES)
for (let y of OVERFLOW_VALUES)
testOverflowShorthand(x, y);
</script>
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