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+<!DOCTYPE html>
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+<title>Node.normalize()</title>
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+<script src="../../resources/testharness.js"></script>
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+<script src="../../resources/testharnessreport.js"></script>
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+<div id=log></div>
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+<script>
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+test(function() {
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+ var df = document.createDocumentFragment(),
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+ t1 = document.createTextNode("1"),
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+ t2 = document.createTextNode("2"),
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+ t3 = document.createTextNode("3"),
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+ t4 = document.createTextNode("4")
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+ df.appendChild(t1)
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+ df.appendChild(t2)
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+ assert_equals(df.childNodes.length, 2)
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+ assert_equals(df.textContent, "12")
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+ var el = document.createElement('x')
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+ df.appendChild(el)
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+ el.appendChild(t3)
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+ el.appendChild(t4)
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+ document.normalize()
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+ assert_equals(el.childNodes.length, 2)
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+ assert_equals(el.textContent, "34")
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+ assert_equals(df.childNodes.length, 3)
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+ assert_equals(t1.data, "1")
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+ df.normalize()
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+ assert_equals(df.childNodes.length, 2)
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+ assert_equals(df.firstChild, t1)
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+ assert_equals(t1.data, "12")
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+ assert_equals(t2.data, "2")
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+ assert_equals(el.firstChild, t3)
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+ assert_equals(t3.data, "34")
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+ assert_equals(t4.data, "4")
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+})
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+
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+// https://www.w3.org/Bugs/Public/show_bug.cgi?id=19837
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+test(function() {
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+ var div = document.createElement("div")
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+ var t1 = div.appendChild(document.createTextNode(""))
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+ var t2 = div.appendChild(document.createTextNode("a"))
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+ var t3 = div.appendChild(document.createTextNode(""))
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+ assert_array_equals(div.childNodes, [t1, t2, t3])
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+ div.normalize();
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+ assert_array_equals(div.childNodes, [t2])
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+}, "Empty text nodes separated by a non-empty text node")
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+test(function() {
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+ var div = document.createElement("div")
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+ var t1 = div.appendChild(document.createTextNode(""))
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+ var t2 = div.appendChild(document.createTextNode(""))
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+ assert_array_equals(div.childNodes, [t1, t2])
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+ div.normalize();
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+ assert_array_equals(div.childNodes, [])
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+}, "Empty text nodes")
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+
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+// The specification for normalize is clear that only "exclusive Text
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+// nodes" are to be modified. This excludes CDATASection nodes, which
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+// derive from Text. Naïve implementations may fail to skip
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+// CDATASection nodes, or even worse, try to test textContent or
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+// nodeValue without taking care to check the node type. They will
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+// fail this test.
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+test(function() {
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+ // We create an XML document so that we can create CDATASection.
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+ // Except for the CDATASection the result should be the same for
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+ // an HTML document. (No non-Text node should be touched.)
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+ var doc = new DOMParser().parseFromString("<div/>", "text/xml")
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+ var div = doc.documentElement
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+ var t1 = div.appendChild(doc.createTextNode("a"))
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+ // The first parameter is the "target" of the processing
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+ // instruction, and the 2nd is the text content.
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+ var t2 = div.appendChild(doc.createProcessingInstruction("pi", ""))
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+ var t3 = div.appendChild(doc.createTextNode("b"))
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+ var t4 = div.appendChild(doc.createCDATASection(""))
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+ var t5 = div.appendChild(doc.createTextNode("c"))
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+ var t6 = div.appendChild(doc.createComment(""))
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+ var t7 = div.appendChild(doc.createTextNode("d"))
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+ var t8 = div.appendChild(doc.createElement("el"))
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+ var t9 = div.appendChild(doc.createTextNode("e"))
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+ var expected = [t1, t2, t3, t4, t5, t6, t7, t8, t9]
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+ assert_array_equals(div.childNodes, expected)
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+ div.normalize();
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+ assert_array_equals(div.childNodes, expected)
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+}, "Non-text nodes with empty textContent values.")
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+</script>
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Andreas Kling