test_selection_cross_shadow_boundary_1_backward_drag.html

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<!DOCTYPE HTML>

<script src="/tests/SimpleTest/EventUtils.js"></script>

<script src="/tests/SimpleTest/SimpleTest.js"></script>

<script type="application/javascript" src="/tests/layout/generic/test/selection_cross_shadow_boundary_helper.js"></script>

<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />

<script>

SimpleTest.waitForExplicitFinish();

function run() {

  document.getElementById("host").attachShadow({ mode: "open" }).innerHTML = "<span>InnerText</span>";

  const inner = host.shadowRoot.firstChild;

  const rect = inner.getBoundingClientRect();

  // Drag from the bottom right of InnerText to the

  // top left of OuterText.

  drag(

    inner,

    rect.width,

    rect.height,

    document.getElementById("outer"),

0,

0);

  // Above drag selects both "OuterText" and "InnerText"

  const sel = document.getSelection().getComposedRanges(host.shadowRoot)[0];

  // backward selection

  is(sel.endContainer, inner.firstChild, "endContainer is the InnerText");

  is(sel.endOffset, 9, "endOffset ends at the last character");

  is(sel.startContainer, outer.firstChild, "startContainer is the OuterText");

  is(sel.startOffset, 0, "startOffset starts at the first character");

  SimpleTest.finish();

</script>

<body onload="SimpleTest.waitForFocus(run);">

  <span id="outer">OuterText</span>

  <div id="host"></div>

</body>