propertytest.java

来自「Groovy动态语言 运行在JVM中的动态语言 可以方便的处理业务逻辑变化大的业」· Java 代码 · 共 260 行

/*
 $Id: PropertyTest.java 2272 2005-06-10 13:42:22Z cstein $

 Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.

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    statements and notices.  Redistributions must also contain a
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    above copyright notice, this list of conditions and the
    following disclaimer in the documentation and/or other
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    products derived from this Software without prior written
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    trademark of The Codehaus.

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    http://groovy.codehaus.org/

 THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
 ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
 NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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package org.codehaus.groovy.runtime;

import groovy.lang.MissingMethodException;
import groovy.util.GroovyTestCase;
import groovy.util.Node;

import java.awt.HeadlessException;
import java.awt.Point;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

/**
 * Test the property access of the Invoker class
 * 
 * @author <a href="mailto:[e-mail]">James Strachan</a>
 * @version $Revision: 2272 $
 */
public class PropertyTest extends GroovyTestCase {

    protected Invoker invoker = new Invoker();

    public void testMapProperties() throws Exception {
        Map map = new HashMap();
        map.put("foo", "abc");
        map.put("bar", new Integer(123));

        assertGetSetProperty(map, "foo", "abc", "def");
        assertGetSetProperty(map, "bar", new Integer(123), new Double(12.34));
    }

    public void testBeanProperties() throws Exception {
        DummyBean bean = new DummyBean();

        assertGetSetProperty(bean, "name", "James", "Bob");
        assertGetSetProperty(bean, "i", new Integer(123), new Integer(455));

        // dynamic properties
        assertGetSetProperty(bean, "dynamicFoo", null, "aValue");
        assertGetSetProperty(bean, "dynamicFoo", "aValue", "NewValue");
    }

/** todo this is no longer possible in new groovy
    public void testUsingMethodProperty() throws Exception {
        DummyBean bean = new DummyBean();

        assertGetSetProperty(bean, "name", "James", "Bob");

        Object value = InvokerHelper.getProperty(bean, "getName");
        assertTrue("Should have returned a closure: " + value, value instanceof Closure);
        Closure closure = (Closure) value;
        Object result = closure.call(null);
        assertEquals("Result of call to closure", "Bob", result);
    }
**/   
    

    public void testStaticProperty() throws Exception {
        Object value = InvokerHelper.getProperty(System.class, "out");
        assertEquals("static property out", System.out, value);
    }

    public void testClassProperty() throws Exception {
        Class c = String.class;
        Object value = InvokerHelper.getProperty(c, "name");
        assertEquals("class name property", c.getName(), value);
    }

    public void testMapEntryProperty() throws Exception {
        HashMap map = new HashMap();
        map.put("a", "x");
        Object[] array = map.entrySet().toArray();
        Object entry = array[0];

        Object key = InvokerHelper.getProperty(entry, "key");
        assertEquals("key property", "a", key);

        Object value = InvokerHelper.getProperty(entry, "value");
        assertEquals("value property", "x", value);
    }

/** todo this is no longer possible in new groovy
    public void testMethodProperty() throws Exception {
        Object value = InvokerHelper.getProperty(this, "getCheese");
        assertTrue("Should have returned a closure: " + value, value instanceof Closure);

        Object result = ((Closure) value).call();
        assertEquals("result of closure call", getCheese(), result);

        System.out.println("Closure: " + value + " and cheese: " + result);
    }
**/

    public void testListCoercionProperty() throws Exception {
        DummyBean bean = new DummyBean();
        List list = new ArrayList();
        list.add(new Integer(10));
        list.add(new Integer(20));

        InvokerHelper.setProperty(bean, "point", list);
        assertEquals("Should have set a point", new Point(10, 20), bean.getPoint());
    }

    public void testListCoercionPropertyOnJFrame() throws Exception {
        try {
	        JFrame bean = new JFrame();
	        List list = new ArrayList();
	        list.add(new Integer(10));
	        list.add(new Integer(20));
	
	        InvokerHelper.setProperty(bean, "location", list);
	        assertEquals("Should have set a point", new Point(10, 20), bean.getLocation());
        }
        catch (HeadlessException e) {
            // its fine to not run this test on headless environments
        }
        catch (MissingMethodException e) {
            System.out.println("Failed with cause: " + e);
            e.printStackTrace();
            fail("Should not have throw: " + e);
        }
    }

    public void testListNavigationProperty() throws Exception {
        List list = new ArrayList();
        list.add(new DummyBean("James"));
        list.add(new DummyBean("Bob"));

        List value = (List) InvokerHelper.getProperty(list, "name");
        assertArrayEquals(new Object[] { "James", "Bob" }, value.toArray());
    }

    public void testListOfListNavigationProperty() throws Exception {
       List list = new ArrayList();
       list.add(new DummyBean("James"));
       list.add(new DummyBean("Bob"));

       List listOfList = new ArrayList();
       listOfList.add(list);
       
       List value = (List) InvokerHelper.getProperty(listOfList, "name");
       assertArrayEquals(new Object[] { "James", "Bob" }, value.toArray());
   }

    public void testNodeNavigationProperty() throws Exception {
        Node z = new Node(null, "z");
        Node y = new Node(null, "y");

        List children = new ArrayList();
        children.add(y);
        children.add(z);

        Node x = new Node(null, "x", children);

        children = new ArrayList();
        children.add(x);
        Node b = new Node(null, "b", children);

        // @todo should try with just a node as the child

        List value = (List) InvokerHelper.getProperty(b, "x");
        assertArrayEquals(new Object[] { x }, value.toArray());

        value = (List) InvokerHelper.getProperty(value, "z");
        assertArrayEquals(new Object[] { z }, value.toArray());
    }

    public void testUsingInPropertyOnProcessViaGroovyMethod() throws Exception {
        Process process = DefaultGroovyMethods.execute("java -version");
        Object value = InvokerHelper.getProperty(process, "in");
        assertNotNull(value);
        
        System.out.println("Found in: " + value);
        
        process.destroy();
    }
    
    public Object getCheese() {
        return "cheddar";
    }

    public void testComponentParent() {
        JPanel panel = new JPanel();
        JButton bean = new JButton();
        
        panel.add(bean);
        
        Object value = InvokerHelper.getProperty(bean, "parent");
        assertTrue(value != null);
    }
    
    // Implementation methods
    //-------------------------------------------------------------------------

    protected void assertGetSetProperty(Object object, String property, Object currentValue, Object newValue) {
        assertGetProperty(object, property, currentValue);

        InvokerHelper.setProperty(object, property, newValue);

        assertGetProperty(object, property, newValue);
    }

    protected void assertGetProperty(Object object, String property, Object expected) {
        Object value = InvokerHelper.getProperty(object, property);

        assertEquals("property: " + property + " of: " + object, expected, value);
    }
}