background-position-x-computed.html

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This test has a WPT meta file that expects 7 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /css/css-backgrounds/parsing/background-position-x-computed.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

<meta charset="utf-8">

<title>CSS Backgrounds and Borders Module Level 4: getComputedStyle().backgroundPositionX</title>

<link rel="help" href="https://drafts.csswg.org/css-backgrounds-4/#propdef-background-position-x">

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

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

<script src="/css/support/computed-testcommon.js"></script>

<style>

  #target {

    font-size: 40px;

</style>

</head>

<body>

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

<script>

test_computed_value("background-position-x", "center", "50%");

test_computed_value("background-position-x", "left", "0%");

test_computed_value("background-position-x", "right", "100%");

test_computed_value("background-position-x", "x-start");

test_computed_value("background-position-x", "x-end");

test_computed_value("background-position-x", "-20%");

test_computed_value("background-position-x", "10px");

test_computed_value("background-position-x", "0.5em", "20px");

test_computed_value("background-position-x", "calc(10px - 0.5em)", "-10px");

test_computed_value("background-position-x", "left -20%", "-20%");

test_computed_value("background-position-x", "right -10px", "calc(100% + 10px)");

test_computed_value("background-position-x", "-20%, 10px", "-20%");

test_computed_value("background-position-x", "center, left, right", "50%");

test_computed_value("background-position-x", "0.5em, x-start, x-end", "20px");

// See background-computed.html for a test with multiple background images.

test_computed_value("background-position-x", "calc(10px - 0.5em), -20%, 10px", "-10px");

test_computed_value("background-position-x", "calc(10px - 0.5em), left -20%, right 10px", "-10px");

</script>

</body>

</html>