What is the test for revocation of probation under section 1203.2 of the California Probation Code?

Section 1203.2, subdivision (a) permits a court to revoke probation "if the interests of justice so require and the court, in its judgment, has reason to believe ... that the person has violated any of the conditions of his or her supervision, has become abandoned to improper associates or a vicious life, or has subsequently committed other offenses, regardless of whether he or she has been prosecuted for those offenses." (See Coughlin, supra, 16 Cal.3d at p. 56; People v. Galvan (2007) 155 Cal.App.4th 978, 981.)