Blitz - WPT: calc-nesting.html

wpt / css / css-values / calc-nesting.html

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

Subtest	Status	Message
e.style['left'] = "calc(20px + calc(80px))" should set the property value	PASS
e.style['left'] = "calc(calc(100px))" should set the property value	PASS
e.style['left'] = "calc(calc(2) * calc(50px))" should set the property value	PASS
e.style['left'] = "calc(calc(150px*2/3))" should set the property value	PASS
e.style['left'] = "calc(calc(2 * calc(calc(3)) + 4) * 10px)" should set the property value	PASS
e.style['left'] = "calc(50px + calc(40%))" should set the property value	PASS
e.style['border'] = "calc(calc(10px)) solid pink" should set the property value	PASS
Nested calcs should work with layout	PASS

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/css/css-values/calc-nesting.html

<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS Values and Units Test: nested calc() functions</title>

  <!--

  This test is the first portion of the original test

  https://chromium.googlesource.com/chromium/src/+/c825d655f6aaf73484f9d56e9012793f5b9668cc/third_party/WebKit/LayoutTests/css3/calc/calc-nesting.html

  -->

  <link rel="help" href="https://www.w3.org/TR/css-values-3/#calc-notation">

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>

<style>
#parent { width: 200px; }
#div1 { width: calc(calc(50px)); }
#div2 { width: calc(calc(60%) - 20px); }
#div3 { width: calc(calc(3 * 25%)); }
#div4 {
    --width: calc(10% + 30px);
    width: calc(2 * var(--width));
}
</style>
<div id=parent>
  <div id=div1></div>
  <div id=div2></div>
  <div id=div3></div>
  <div id=div4></div>
</div>
<div id="target"></div>
<script>
// Parsing/serialization checks
test_valid_value("left", "calc(20px + calc(80px))", "calc(100px)");
test_valid_value("left", "calc(calc(100px))", "calc(100px)");
test_valid_value("left", "calc(calc(2) * calc(50px))", "calc(100px)");
test_valid_value("left", "calc(calc(150px*2/3))", "calc(100px)");
test_valid_value("left", "calc(calc(2 * calc(calc(3)) + 4) * 10px)", "calc(100px)");
test_valid_value("left", "calc(50px + calc(40%))", "calc(40% + 50px)");
test_valid_value("border", "calc(calc(10px)) solid pink", "calc(10px) solid pink");

// Tests that require layout
test(function(){
    assert_equals(getComputedStyle(div1).width, "50px");
    assert_equals(getComputedStyle(div2).width, "100px");
    assert_equals(getComputedStyle(div3).width, "150px");
    assert_equals(getComputedStyle(div4).width, "100px");
}, "Nested calcs should work with layout");
</script>