public virtual void testGetCreatePartByCID()
{
AttachmentCollection multipart = null;
Attachment bp = MimeUtil.GetCreatePartByCID(multipart, "cid1");
MimeUtil.SetAttachmentContent(bp, "boo");
Attachment bp2 = MimeUtil.GetCreatePartByCID(multipart, "cid2");
MimeUtil.SetAttachmentContent(bp2, "bar");
Attachment bp3 = MimeUtil.GetCreatePartByCID(multipart, "cid1");
Assert.AreEqual(bp, bp3);
Assert.AreEqual(2, multipart.Count);
Assert.AreEqual("boo", MimeUtil.GetAttachmentContent(bp3));
}