test_selection_cross_shadow_boundary_1_backward_click.html

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<!DOCTYPE HTML>

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

<script src="/tests/SimpleTest/SimpleTest.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();

  // Click the bottom right of "InnerText"

  synthesizeMouse(inner, rect.width, rect.height, { type: "mousedown"});

  synthesizeMouse(inner, rect.width, rect.height, { type: "mouseup" });

  // Click the top left of "OuterText"

  synthesizeMouse(document.getElementById("outer"), 0, 0, { type: "mousedown" , shiftKey: true});

  synthesizeMouse(document.getElementById("outer"), 0, 0, { type: "mouseup" , shiftKey: true});

  // Above two clicks should select 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>