Blitz - WPT: overflow-shorthand-001.html

wpt / css / css-overflow / overflow-shorthand-001.html

Data from commit:
a50cb89 wpt: run reference-named files which are themselves tests (#836) (2026-09-03)

Subtest	Status	Message
overflow: auto auto works	PASS
overflow: auto hidden works	PASS
overflow: auto scroll works	PASS
overflow: auto visible works	PASS
overflow: hidden auto works	PASS
overflow: hidden hidden works	PASS
overflow: hidden scroll works	PASS
overflow: hidden visible works	PASS
overflow: scroll auto works	PASS
overflow: scroll hidden works	PASS
overflow: scroll scroll works	PASS
overflow: scroll visible works	PASS
overflow: visible auto works	PASS
overflow: visible hidden works	PASS
overflow: visible scroll works	PASS
overflow: visible visible works	PASS

Enable JavaScript in test iframe

/css/css-overflow/overflow-shorthand-001.html

<!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>