src/test/org/apache/commons/chain/generic/DispatchCommandTestCase.java

package org.apache.commons.chain.generic;

import junit.framework.TestCase;
import org.apache.commons.chain.Context;
import org.apache.commons.chain.impl.ContextBase;

/* JUnitTest case for class: org.apache.commons.chain.generic.DispatchCommand */
public class DispatchCommandTestCase extends TestCase {

    public DispatchCommandTestCase(String _name) {
        super(_name);
    }

    /* setUp method for test case */
    protected void setUp() {
    }

    /* tearDown method for test case */
    protected void tearDown() {
    }

    /* Executes the test case */
    public static void main(String[] argv) {
        String[] testCaseList = {DispatchCommandTestCase.class.getName()};
        junit.textui.TestRunner.main(testCaseList);
    }

    public void testMethodDispatch() throws Exception {
        TestCommand test = new TestCommand();

        test.setMethod("testMethod");
        Context context = new ContextBase();
        assertNull(context.get("foo"));
        boolean result = test.execute(context);
        assertTrue(result);
        assertNotNull(context.get("foo"));
        assertEquals("foo", context.get("foo"));


    }


    public void testMethodKeyDispatch() throws Exception {
        TestCommand test = new TestCommand();

        test.setMethodKey("foo");
        Context context = new ContextBase();
        context.put("foo", "testMethodKey");
        assertNull(context.get("bar"));
        boolean result = test.execute(context);
        assertFalse(result);
        assertNotNull(context.get("bar"));
        assertEquals("bar", context.get("bar"));


    }

    public void testAlternateContext() throws Exception {
        TestAlternateContextCommand test = new TestAlternateContextCommand();

        test.setMethod("foo");
        Context context = new ContextBase();
        assertNull(context.get("elephant"));
        boolean result = test.execute(context);
        assertTrue(result);
        assertNotNull(context.get("elephant"));
        assertEquals("elephant", context.get("elephant"));


    }

    
    class TestCommand extends DispatchCommand {
        

        public boolean testMethod(Context context) {
            context.put("foo", "foo");
            return true;
        }

        public boolean testMethodKey(Context context) {
            
            context.put("bar", "bar");
            return false;
        }

    }

    /**
     * Command which uses alternate method signature.
     * <p>Title: Commons Chain</p>
     * <p>Description: An implmentation of the GoF Chain of Responsibility pattern</p>
     * <p>Copyright: Copyright (c) 2003-2004 The Apache Software Foundation - All Rights Reserved.</p>
     * <p>Company: The Apache Software Foundation</p>
     * @author germuska
     * @version 0.2-dev
     */
    class TestAlternateContextCommand extends DispatchCommand {


        protected Class[] getSignature() {
            return new Class[] { TestAlternateContext.class };
        }

        protected Object[] getArguments(Context context) {
            return new Object[] { new TestAlternateContext(context) };
        }

        public boolean foo(TestAlternateContext context) {
            context.put("elephant", "elephant");
            return true;
        }
        
    }


    class TestAlternateContext extends java.util.HashMap implements Context {
        Context wrappedContext = null;
         TestAlternateContext(Context context) {
            this.wrappedContext = context;
        }

        public Object get(Object o) {
            return this.wrappedContext.get(o);
        }

        public Object put(Object key, Object value) {
            return this.wrappedContext.put(key, value);
        }

    }
}