border-width-rounding.tentative.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-borders/border-width-rounding.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

  <title>

    CSS Border: width rounding

  </title>

  <link rel="author" title="Traian Captan" href="mailto:tcaptan@chromium.org">

  <link rel="help" href="https://www.w3.org/TR/css-backgrounds-3/#border-width">

  <meta name="assert" content="border-width computed value after rounding.">

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

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

</head>

<body>

  <h1>

    Test passes if border widths are rounded up

    when they are greater than 0 and less than 1,

    and rounded down when they are greater than 1.

  </h1>

  <script>

    const values = [

      { input: "0px", expected: "0px" },

      { input: "0.1px", expected: "1px" },

      { input: "0.25px", expected: "1px" },

      { input: "0.5px", expected: "1px" },

      { input: "0.9px", expected: "1px" },

      { input: "1px", expected: "1px" },

      { input: "1.25px", expected: "1px" },

      { input: "1.5px", expected: "1px" },

      { input: "2px", expected: "2px" },

      { input: "2.75px", expected: "2px" },

      { input: "2.999px", expected: "2px" },

];

    for (const { input, expected } of values) {

      const div = document.createElement("div");

      div.style = `border: solid ${input} blue; outline: solid ${input} purple; margin-bottom: 20px;`;

      document.body.appendChild(div);

      test(function() {

        assert_equals(getComputedStyle(div).borderWidth, expected);

      }, `border-width: ${input}`);

      test(function() {

        assert_equals(getComputedStyle(div).outlineWidth, expected);

      }, `outline-width: ${input}`);

    </script>

</body>

</html>