SEC-1317: Removed check in ProviderManager.getProviders() for empty provider list. A ProviderManager with a non-null parent may have an empty provider list. The afterPropertiesSet() method performs the necessary checks.

core/src/test/java/org/springframework/security/authentication/ProviderManagerTests.java

@@ -85,12 +85,6 @@ public class ProviderManagerTests {
         mgr.setProviders(providers);
     }
 
-    @Test(expected=IllegalArgumentException.class)
-    public void getProvidersFailsIfProviderListNotSet() throws Exception {
-        ProviderManager mgr = new ProviderManager();
-        mgr.getProviders();
-    }
-
     @Test(expected=IllegalArgumentException.class)
     public void testStartupFailsIfProvidersNotSet() throws Exception {
         ProviderManager mgr = new ProviderManager();