What is the test for an in camera review of a warrant affidavit based on statements attributed to a confidential informant?

[221 Cal.App.3d 1115] Before a court is required to exercise its discretion to decide whether to conduct an in camera review or to order discovery relating to a warrant affidavit based on statements attributed to a confidential informant, a defendant must offer evidence casting some reasonable doubt regarding either the existence of the informant or the truthfulness of the affiant's report concerning the information furnished. (People v. Luttenberger (1990) 50 Cal.3d 1, 265 Cal.Rptr. 690, 784 P.2d 633.)

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