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The Tor Browser
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empty-text-baseline-002.html (1863B)


      1 <!DOCTYPE html>
      2 <meta charset="utf-8">
      3 <title>CSS Test: An Empty Text Node Should Not Generate a Baseline</title>
      4 <link rel="author" title="David Shin" href="mailto:dshin@mozilla.com">
      5 <link rel="help" href="https://drafts.csswg.org/css-display-3/#intro">
      6 <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/9606">
      7 <link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1855583">
      8 <link rel="stylesheet" href="/fonts/ahem.css">
      9 <script src="/resources/testharness.js"></script>
     10 <script src="/resources/testharnessreport.js"></script>
     11 <style>
     12 body {
     13  margin: 0;
     14 }
     15 
     16 .ahem {
     17  font-family: Ahem;
     18 }
     19 
     20 .with-pseudo::before, .with-pseudo::after {
     21  content: "";
     22  width: 4px;
     23  height: 4px;
     24  border: 2px solid;
     25  background: orange;
     26  display: inline-block;
     27 }
     28 
     29 .font-size::before, .font-size::after {
     30  font-size: 100px;
     31 }
     32 
     33 .line-height::before, .line-height::after {
     34  line-height: 10;
     35 }
     36 
     37 .empty-concat::before, .empty-concat::after {
     38  content: "" "" "" "" "";
     39 }
     40 
     41 </style>
     42 <div id="reference" class="ahem">x</div>
     43 <div id="fs" class="ahem with-pseudo font-size">x</div>
     44 <div id="ba" class="ahem with-pseudo line-height">x</div>
     45 <div id="ec" class="ahem with-pseudo font-size empty-concat">x</div>
     46 <script>
     47 test(function() {
     48  assert_equals(fs.offsetHeight, reference.offsetHeight);
     49  assert_equals(ba.offsetHeight, reference.offsetHeight);
     50  assert_equals(ec.offsetHeight, reference.offsetHeight);
     51 }, "Empty content pseudo-element does not generate baseline");
     52 
     53 test(function() {
     54  const divs = [fs, ba, ec];
     55  for (let d of divs) {
     56    d.style = "white-space: pre";
     57  }
     58  assert_equals(fs.offsetHeight, reference.offsetHeight);
     59  assert_equals(ba.offsetHeight, reference.offsetHeight);
     60  assert_equals(ec.offsetHeight, reference.offsetHeight);
     61 }, "Empty content pseudo-element does not generate baseline with white-space: pre");
     62 </script>