@Test
public void testStartupFailsIfNoUserCacheSet() throws Exception {
VistaAuthenticationProvider provider = new VistaAuthenticationProvider();
provider.setUserDetailsService(mockUserDetailService);
assertEquals(NullUserCache.class, provider.getUserCache().getClass());
provider.setUserCache(null);
try {
provider.afterPropertiesSet();
fail("Should have thrown IllegalArgumentException");
} catch (IllegalArgumentException expected) {
assertTrue(true);
}
}
