negative-offset-and-margin.tentative.html

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This test has a WPT meta file that expects 2 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /html/semantics/permission-element/negative-offset-and-margin.tentative.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<meta charset=utf-8>

<link rel="help" href="https://github.com/WICG/PEPC/blob/main/explainer.md#locking-the-pepc-style">

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

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

<body>

<!--The permission element should not allow setting negative margins or outline-offset

-->

<style>

  #id1 {

    outline-offset: -50px;

    margin-top: -50px;

    margin-left: -50px;

    margin-bottom: -50px;

    margin-right: -50px;

  #id2 {

    outline-offset: 50px;

    margin-top: 50px;

    margin-left: 50px;

    margin-bottom: 50px;

    margin-right: 50px;

  /* These various expressions all result in a negative value when calculated */

  #id3 {

    outline-offset: min(-50px, 50px);

    margin-top: min(10%, -50px);

    margin-left: clamp(-100px, 1vw, -50px);

    margin-bottom: 1% - 10000px;

    margin-right: max(min(-1em, 10em), -5%);

</style>

<permission id="id1" type="geolocation">

<permission id="id2" type="camera">

<permission id="id3" type="microphone">

<script>

  test(function(){

    var el_with_negatives = document.getElementById("id1");

    assert_equals(getComputedStyle(el_with_negatives).outlineOffset, "0px", "outline-offset");

    assert_equals(getComputedStyle(el_with_negatives).marginLeft, "0px", "margin-left");

    assert_equals(getComputedStyle(el_with_negatives).marginRight, "0px", "margin-right");

    assert_equals(getComputedStyle(el_with_negatives).marginTop, "0px", "margin-top");

    assert_equals(getComputedStyle(el_with_negatives).marginBottom, "0px", "margin-bottom");

  }, "Negative margins/offset should be changed to 0px");

  test(function(){

    var el_with_positives = document.getElementById("id2");

    assert_equals(getComputedStyle(el_with_positives).outlineOffset, "50px", "outline-offset");

    assert_equals(getComputedStyle(el_with_positives).marginLeft, "50px", "margin-left");

    assert_equals(getComputedStyle(el_with_positives).marginRight, "50px", "margin-right");

    assert_equals(getComputedStyle(el_with_positives).marginTop, "50px", "margin-top");

    assert_equals(getComputedStyle(el_with_positives).marginBottom, "50px", "margin-bottom");

  }, "Positive margins/offset are unaffected");

  test(function(){

    var el_with_negative_expr = document.getElementById("id3");

    assert_equals(getComputedStyle(el_with_negative_expr).outlineOffset, "0px", "outline-offset");

    assert_equals(getComputedStyle(el_with_negative_expr).marginLeft, "0px", "margin-left");

    assert_equals(getComputedStyle(el_with_negative_expr).marginRight, "0px", "margin-right");

    assert_equals(getComputedStyle(el_with_negative_expr).marginTop, "0px", "margin-top");

    assert_equals(getComputedStyle(el_with_negative_expr).marginBottom, "0px", "margin-bottom");

  }, "Expressions margins/offset should always return at least 0px");

</script>

</body>