public void TestAttributeMethods()
{
SimpleElement se = new SimpleElement();
Assert.AreEqual(se.Attributes.Count, 0);
IXmlValue attr1 = se.AddAttribute("attr1");
attr1.SetString("value1");
Assert.AreEqual(se.Attributes.Count, 1);
Assert.IsNull(se.GetAttribute("attr2"));
Assert.AreEqual(attr1, se.GetAttribute("attr1"));
Exception e = null;
try
{
se.GetAttribute(null);
}
catch (Exception ex)
{
e = ex;
}
Assert.IsNotNull(e);
Assert.IsInstanceOf(typeof(ArgumentException), e);
se.AddAttribute("attr2");
Assert.AreEqual(se.Attributes.Count, 2);
se.SetAttribute("attr2", null);
Assert.AreEqual(se.Attributes.Count, 1);
se.SetAttribute("attr2", new SimpleValue("value2"));
Assert.AreEqual(se.Attributes.Count, 2);
Assert.IsNull(se.GetAttribute("attr3"));
IXmlValue attr3 = se.GetSafeAttribute("attr3");
Assert.IsNotNull(attr3);
Assert.IsFalse(attr3.IsMutable);
}