public void MustOnlyParseXmlData()
{
Assert.IsFalse(sut.CanParse(null));
Assert.IsFalse(sut.CanParse(new MemoryStream(Encoding.UTF8.GetBytes("<key>someKey</key><value>1</value>"))));
Assert.IsFalse(sut.CanParse(new MemoryStream(Encoding.UTF8.GetBytes("<html></html>"))));
Assert.IsFalse(sut.CanParse(new MemoryStream(Encoding.UTF8.GetBytes("<?x"))));
Assert.IsTrue(sut.CanParse(new MemoryStream(Encoding.UTF8.GetBytes("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"))));
}