Prove SecureContextImpl.equals works as we want it to, in light of HttpSessionContextIntegrationFilter's attempts to avoid unnecessary HttpSession creation.

core/src/test/java/org/acegisecurity/context/SecureContextImplTests.java

@@ -50,6 +50,12 @@ public class SecureContextImplTests extends TestCase {
         junit.textui.TestRunner.run(SecureContextImplTests.class);
     }
 
+    public void testEmptyObjectsAreEquals() {
+        SecureContextImpl obj1 = new SecureContextImpl();
+        SecureContextImpl obj2 = new SecureContextImpl();
+        assertTrue(obj1.equals(obj2));
+    }
+
     public void testSecureContextCorrectOperation() {
         SecureContext context = new SecureContextImpl();
         Authentication auth = new UsernamePasswordAuthenticationToken("marissa",