What is the name of your state (only U.S. law)? California. Arrested for drug sales. 1st count includes a prior offense within 5 years. Total for 1st count is 4 years. 3 additional counts of sales as well which carry 1year. Confidential informant used. Is confidential informant required to testify. If so, if confidential informant does not appear, to testify, can charges be dismissed?