What is the test for reinstatement of a probationary employee?

15 In her brief before this court, plaintiff asserts for the first time another argument in support of her claim to reinstatement. She argues that the circumstances of her employment gave her a valid "expectancy of reemployment." (Balen v. Peralta Junior College Dist. (1974) 11 Cal.3d 821, 831, 114 Cal.Rptr. 589, 523 P.2d 629.) She claims that this expectancy made her a "de facto" probationary employee entitled to all the procedural rights of such an employee.