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23 lines
877 B
HTML
23 lines
877 B
HTML
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<!doctype html>
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<!--
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https://bugzilla.mozilla.org/show_bug.cgi?id=719515
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-->
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<title>Test for Bug 719515</title>
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<script src="/tests/SimpleTest/SimpleTest.js"></script>
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<link rel="stylesheet" href="/tests/SimpleTest/test.css">
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<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=719515">Mozilla Bug 719515</a>
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<p id="display"></p>
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<div id="content" style="display: none"></div>
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<pre id="test">
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<script>
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getSelection().collapse(document.body, 0);
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var range = getSelection().getRangeAt(0);
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getSelection().extend(document.body, 1);
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isnot(range, getSelection().getRangeAt(0),
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"extend() must replace existing ranges, not mutate them");
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range = getSelection().getRangeAt(0);
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getSelection().extend(document.body, 1);
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isnot(range, getSelection().getRangeAt(0),
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"extend() must replace existing ranges, not mutate them (even for no-op extend()s");
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</script>
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