HttpSessionEventPublisher now verifies that the ApplicationContext is not null

core/src/main/java/org/acegisecurity/ui/session/HttpSessionEventPublisher.java

@@ -21,6 +21,7 @@ import org.apache.commons.logging.LogFactory;
 import org.springframework.context.ApplicationContext;
 
 import org.springframework.web.context.support.WebApplicationContextUtils;
+import org.springframework.util.Assert;
 
 import javax.servlet.ServletContextEvent;
 import javax.servlet.ServletContextListener;
@@ -70,6 +71,8 @@ public class HttpSessionEventPublisher implements HttpSessionListener,
      *        WebApplicationContext
      */
     public void contextInitialized(ServletContextEvent event) {
+        if (log.isDebugEnabled())
+            log.debug("Received ServletContextEvent: " + event);
         setContext(WebApplicationContextUtils.getRequiredWebApplicationContext(
                 event.getServletContext()));
     }
@@ -86,7 +89,7 @@ public class HttpSessionEventPublisher implements HttpSessionListener,
 
         log.debug("Publishing event: " + e);
 
-        context.publishEvent(e);
+        getContext().publishEvent(e);
     }
 
     /**
@@ -101,7 +104,7 @@ public class HttpSessionEventPublisher implements HttpSessionListener,
 
         log.debug("Publishing event: " + e);
 
-        context.publishEvent(e);
+        getContext().publishEvent(e);
     }
 
     /**
@@ -114,4 +117,9 @@ public class HttpSessionEventPublisher implements HttpSessionListener,
         this.context = context;
         log.debug("Using context: " + context);
     }
+
+    ApplicationContext getContext() {
+        Assert.notNull(context, "setContext(...) never called, ApplicationContext must not be null");
+        return context;
+    }
 }

core/src/test/java/org/acegisecurity/ui/session/HttpSessionEventPublisherTests.java

@@ -20,10 +20,13 @@ import junit.framework.TestCase;
 import org.springframework.mock.web.MockServletContext;
 import org.springframework.mock.web.MockHttpSession;
 import org.springframework.web.context.support.StaticWebApplicationContext;
+import org.springframework.context.ConfigurableApplicationContext;
 
 import javax.servlet.ServletContextEvent;
 import javax.servlet.http.HttpSessionEvent;
 
+import net.sf.acegisecurity.MockApplicationContext;
+
 
 /**
  * The HttpSessionEventPublisher tests
@@ -72,4 +75,22 @@ public class HttpSessionEventPublisherTests extends TestCase {
 
         publisher.contextDestroyed(new ServletContextEvent(servletContext));
     }
+
+    public void testContext() throws Exception {
+        HttpSessionEventPublisher pub  = new HttpSessionEventPublisher();
+        ConfigurableApplicationContext c = MockApplicationContext.getContext();
+        pub.setContext(c);
+        assertEquals(c, pub.getContext());
+    }
+
+    public void testNullContextCheck() throws Exception {
+        HttpSessionEventPublisher pub  = new HttpSessionEventPublisher();
+
+        try {
+            pub.getContext();
+            fail("IllegalArgumentException expected, the context is null");
+        } catch (IllegalArgumentException e) {
+            e.printStackTrace();
+        }
+    }
 }