MiscTest changes

MiscTest.java

    public void testRuleRemovalWithJoinedRootPattern() {
        String str = "";
        str += "package org.drools \n";
        str += "rule rule1 \n";
        str += "when \n";
        str += "  String() \n";
        str += "  Person() \n";
        str += "then \n";
        str += "end  \n";

        str += "rule rule2 \n";
        str += "when \n";
        str += "  String() \n";
        str += "  Cheese() \n";
        str += "then \n";
        str += "end  \n";

        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ),
                      ResourceType.DRL );

        if ( kbuilder.hasErrors() ) {
            System.out.println( kbuilder.getErrors() );
            assertTrue( kbuilder.hasErrors() );
        }

        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );

        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();

        DefaultFactHandle stringHandle = (DefaultFactHandle) ksession.insert( "hello" );
        
        // Left side is initially unlinked, so the tuple wasn't generated.
        assertNull( stringHandle.getFirstLeftTuple() );
        
        DefaultFactHandle personHandle = (DefaultFactHandle) ksession.insert( new Person() );
        
        LeftTuple stringLT = stringHandle.getFirstLeftTuple();
        
        // Now there should be a left tuple there.
        assertNotNull(stringLT);
        
        // I need a Cheese for this to be propagated 
        assertNull( stringLT.getLeftParentNext() );
        
        // Add the Cheese
        DefaultFactHandle cheeseHandle = (DefaultFactHandle) ksession.insert( new Cheese() );
        
        // Now the tuple was propagated
        assertNotNull( stringLT.getLeftParentNext() );

        // Removing the rule will remove the node and its tuples
        kbase.removeRule( "org.drools",
                          "rule2" );

        // Now the second tuple for the string should have been removed. 
        assertNotNull( stringLT );
        assertNull( stringLT.getLeftParentNext() );

    }