public void Contains_Null ()
{
ComboBox.ObjectCollection col = new ComboBox.ObjectCollection (new ComboBox ());
try {
col.Contains (null);
Assert.Fail ("#1");
} catch (ArgumentNullException ex) {
Assert.AreEqual (typeof (ArgumentNullException), ex.GetType (), "#2");
Assert.IsNull (ex.InnerException, "#3");
Assert.IsNotNull (ex.Message, "#4");
Assert.IsNotNull (ex.ParamName, "#5");
#if NET_2_0
Assert.AreEqual ("value", ex.ParamName, "#6");
#endif
}
}