Blitz - WPT: calc-nesting-002.html

wpt / css / css-values / calc-nesting-002.html

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

Subtest	Status	Message
testing calc(20px + calc(80px))	PASS
testing calc(calc(100px))	PASS
testing calc(calc(2) * calc(50px)	PASS
testing calc(calc(150px*2/3)	PASS
testing calc(calc(2 * calc(calc(3)) + 4) * 10px)	PASS
testing calc(50px + calc(40%))	PASS
testing calc(calc(300px - 1 * (0% + 100px)))	PASS
testing calc(calc(300px - (0% + 100px) * 1))	PASS
testing calc(calc(300px - (0% + 100px) * -1))	PASS
testing calc(calc(300px - -1 * (0% + 100px)))	PASS
testing calc(calc(300px - 1 * (0% - 100px)))	PASS
testing simplification with nested sum	FAIL	assert_equals: expected "calc(10px - min(20%, 20px))" but got "calc(10px + max(-20%, -20px))"

Enable JavaScript in test iframe

/css/css-values/calc-nesting-002.html

<!DOCTYPE html>

  <meta charset="UTF-8">

  <title>CSS Values and Units Test: serialization of summation involving nested calc()</title>

  <!--

  This test is an adapted version of the portion of the original test

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

  which required using property-parsing-test.js

  -->

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/">
  <link rel="help" href="https://www.w3.org/TR/css-values-4/#math-function-simplify-an-expression">

  <meta content="This test checks that how a summation involving one or more nested calc() is performed and serialized." name="assert">

  <script src="/resources/testharness.js"></script>

  <script src="/resources/testharnessreport.js"></script>

  <div id="target"></div>

  <script>
  function startTesting()
  {

  var targetElement = document.getElementById("target");

    function verifySerialization(specified_value, serialization_expected, description)
    {

    test(function()
      {

      targetElement.style.left = specified_value;

      assert_equals(targetElement.style.left, serialization_expected);

      }, description);
    }

    verifySerialization("calc(20px + calc(80px))", "calc(100px)", "testing calc(20px + calc(80px))");

    verifySerialization("calc(calc(100px))", "calc(100px)", "testing calc(calc(100px))");

    verifySerialization("calc(calc(2) * calc(50px)", "calc(100px)", "testing calc(calc(2) * calc(50px)");

    verifySerialization("calc(calc(150px*2/3)", "calc(100px)", "testing calc(calc(150px*2/3)");

    verifySerialization("calc(calc(2 * calc(calc(3)) + 4) * 10px)", "calc(100px)", "testing calc(calc(2 * calc(calc(3)) + 4) * 10px)");

    verifySerialization("calc(50px + calc(40%))", "calc(40% + 50px)", "testing calc(50px + calc(40%))");

    verifySerialization("calc(calc(300px - 1 * (0% + 100px)))", "calc(0% + 200px)", "testing calc(calc(300px - 1 * (0% + 100px)))");

    verifySerialization("calc(calc(300px - (0% + 100px) * 1))", "calc(0% + 200px)", "testing calc(calc(300px - (0% + 100px) * 1))");

    verifySerialization("calc(calc(300px - (0% + 100px) * -1))", "calc(0% + 400px)", "testing calc(calc(300px - (0% + 100px) * -1))");

    verifySerialization("calc(calc(300px - -1 * (0% + 100px)))", "calc(0% + 400px)", "testing calc(calc(300px - -1 * (0% + 100px)))");

    verifySerialization("calc(calc(300px - 1 * (0% - 100px)))", "calc(0% + 400px)", "testing calc(calc(300px - 1 * (0% - 100px)))");

    verifySerialization("calc(0px - 1 * (min(20%, 20px) - 10px))", "calc(10px - min(20%, 20px))", "testing simplification with nested sum");

  /*

  "
  Sort the terms in the following order:

    The number, if present

    The percentage, if present

    The dimensions, ordered by their units ASCII case-insensitive alphabetically
  "
  https://www.w3.org/TR/css-values-4/#math-function-serialize-a-summation

  */

  }

  startTesting();

  </script>