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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=658746
+-->
+<head>
+  <title>Test for Bug 658746</title>
+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body>
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=658746">Mozilla Bug 658746</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+  
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 658746 **/
+
+/**
+ * Sets property, gets property and deletes property.
+ */
+function SetGetDelete(prop)
+{
+  var el = document.createElement('div');
+
+  el.dataset[prop] = 'aaaaaa';
+  is(el.dataset[prop], 'aaaaaa', 'Dataset property "' + prop + '" should have been set.');
+
+  delete el.dataset[prop];
+  is(el.dataset[prop], undefined, 'Dataset property"' + prop + '" should have been deleted.');
+}
+
+/**
+ * Gets, deletes and sets property. Expects exception while trying to set property.
+ */
+function SetExpectException(prop)
+{
+  var el = document.createElement('div');
+
+  is(el.dataset[prop], undefined, 'Dataset property "' + prop + '" should be undefined.');
+  delete el.dataset[prop];
+
+  try {
+    el.dataset[prop] = "xxxxxx";
+    ok(false, 'Exception should have been thrown when setting "' + prop + '".');
+  } catch (ex) {
+    ok(true, 'Exception should have been thrown.');
+  }
+}
+
+// Numbers as properties.
+SetGetDelete(-12345678901234567980);
+SetGetDelete(-1);
+SetGetDelete(0);
+SetGetDelete(1);
+SetGetDelete(12345678901234567980);
+
+// Floating point numbers as properties.
+SetGetDelete(-1.1);
+SetGetDelete(0.0);
+SetGetDelete(1.1);
+
+// Hexadecimal numbers as properties.
+SetGetDelete(0x3);
+SetGetDelete(0xa);
+
+// Octal numbers as properties.
+SetGetDelete(03);
+SetGetDelete(07);
+
+// String numbers as properties.
+SetGetDelete('0');
+SetGetDelete('01');
+SetGetDelete('0x1');
+
+// Undefined as property.
+SetGetDelete(undefined);
+
+// Empty arrays as properties.
+SetGetDelete(new Array());
+SetGetDelete([]);
+
+// Non-empty array and object as properties.
+SetExpectException(['a', 'b']);
+SetExpectException({'a':'b'});
+
+// Objects as properties.
+SetExpectException(new Object());
+SetExpectException(document);
+
+</script>
+</pre>
+</body>
+</html>