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diff --git a/testing/web-platform/tests/dom/nodes/Text-splitText.html b/testing/web-platform/tests/dom/nodes/Text-splitText.html
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+++ b/testing/web-platform/tests/dom/nodes/Text-splitText.html
@@ -0,0 +1,53 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Text.splitText()</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-text-splittextoffset">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var text = document.createTextNode("camembert");
+  assert_throws_dom("INDEX_SIZE_ERR", function () { text.splitText(10) });
+}, "Split text after end of data");
+
+test(function() {
+  var text = document.createTextNode("");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "");
+}, "Split empty text");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(0);
+  assert_equals(text.data, "");
+  assert_equals(new_text.data, "comté");
+}, "Split text at beginning");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(5);
+  assert_equals(text.data, "comté");
+  assert_equals(new_text.data, "");
+}, "Split text at end");
+
+test(function() {
+  var text = document.createTextNode("comté");
+  var new_text = text.splitText(3);
+  assert_equals(text.data, "com");
+  assert_equals(new_text.data, "té");
+  assert_equals(new_text.parentNode, null);
+}, "Split root");
+
+test(function() {
+  var parent = document.createElement('div');
+  var text = document.createTextNode("bleu");
+  parent.appendChild(text);
+  var new_text = text.splitText(2);
+  assert_equals(text.data, "bl");
+  assert_equals(new_text.data, "eu");
+  assert_equals(text.nextSibling, new_text);
+  assert_equals(new_text.parentNode, parent);
+}, "Split child");
+</script>