add corresponding correct file removal check

jetty-server/src/test/java/org/eclipse/jetty/server/session/HashSessionManagerTest.java

@@ -22,14 +22,37 @@ import java.io.File;
 
 import junit.framework.Assert;
 
+import org.eclipse.jetty.server.SessionManager;
 import org.eclipse.jetty.toolchain.test.MavenTestingUtils;
+import org.eclipse.jetty.util.log.Log;
+import org.eclipse.jetty.util.log.StdErrLog;
+import org.junit.After;
+import org.junit.Before;
 import org.junit.Test;
 
 public class HashSessionManagerTest
 {
     
+    @After
+    public void enableStacks()
+    {
+        enableStacks(true);
+    }
+
+    @Before
+    public void quietStacks()
+    {
+        enableStacks(false);
+    }
+    
+    protected void enableStacks(boolean enabled)
+    {
+        StdErrLog log = (StdErrLog)Log.getLogger("org.eclipse.jetty.server.session");
+        log.setHideStacks(!enabled);
+    }
+    
     @Test
-    public void testDangerousSessionId() throws Exception
+    public void testDangerousSessionIdRemoval() throws Exception
     {
         final HashSessionManager manager = new HashSessionManager();
         manager.setDeleteUnrestorableSessions(true);
@@ -47,4 +70,24 @@ public class HashSessionManagerTest
         Assert.assertTrue("File should exist!", MavenTestingUtils.getTargetFile("dangerFile.session").exists());
 
     }
+    
+    @Test
+    public void testValidSessionIdRemoval() throws Exception
+    {
+        final HashSessionManager manager = new HashSessionManager();
+        manager.setDeleteUnrestorableSessions(true);
+        manager.setLazyLoad(true);
+        File testDir = MavenTestingUtils.getTargetTestingDir("hashes");
+        testDir.mkdirs();
+        manager.setStoreDirectory(testDir);
+        
+        new File(testDir, "validFile.session").createNewFile();
+        
+        Assert.assertTrue("File should exist!", new File(testDir, "validFile.session").exists());
+       
+        manager.getSession("validFile.session");
+
+        Assert.assertTrue("File shouldn't exist!", !new File(testDir,"validFile.session").exists());
+
+    }
 }