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Groovy example source code file (NodeTest.groovy)

This example Groovy source code file (NodeTest.groovy) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Groovy tags/keywords

arraylist, arraylist, bob, hashmap, hashmap, james, list, map, node, node, nodelist, nodeprinter, qname, qname

The Groovy NodeTest.groovy source code

/*
 * Copyright 2003-2008 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.E
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package groovy.util

import groovy.xml.QName

/**
 * Tests the use of the structured Attribute type
 * 
 * @author <a href="mailto:james@coredevelopers.net">James Strachan
 * @author Paul King
 * @version $Revision: 10815 $
 */
public class NodeTest extends GroovyTestCase {

    public void testSimpleAttribute() {
        Node attribute = new Node(null, "transactional");
        assertEquals("name", "transactional", attribute.name());
        assertEquals("attributes", 0, attribute.attributes().size());
        assertEquals("value", 0, attribute.children().size());
        assertEquals("text", "", attribute.text());

        dump(attribute);
    }

    public void testAttributeWithAttributes() {
        Map attributes = new HashMap();
        attributes.put("a", "xyz");
        
        Node attribute = new Node(null, "foo", attributes);
        assertEquals("name", "foo", attribute.name());
        assertEquals("attributes", 1, attribute.attributes().size());
        assertEquals("value", 0, attribute.children().size());
        assertEquals("text", "", attribute.text());

        dump(attribute);
    }

    public void testAttributeWithText() {
        Node attribute = new Node(null, "foo", "the text");
        assertEquals("name", "foo", attribute.name());
        assertEquals("attributes", 0, attribute.attributes().size());
        assertEquals("value", 1, attribute.children().size());
        assertEquals("text", "the text", attribute.text());

        dump(attribute);
    }

    public void testAttributeWithAttributesAndChildren() {
        Map attributes = new HashMap();
        attributes.put("a", "xyz");
        
        List children = new ArrayList();
        children.add(new Node(null, "person", "James"));
        children.add(new Node(null, "person", "Bob"));
        children.add("someText");
        
        Node attribute = new Node(null, "foo", attributes, children);
        assertEquals("name", "foo", attribute.name());
        assertEquals("attributes", 1, attribute.attributes().size());
        assertEquals("value", 3, attribute.children().size());
        assertEquals("text", "someText", attribute.text());

        dump(attribute);
    }

    public void testAttributeWithAttributesAndChildrenWithMixedText() {
        Map attributes = new HashMap();
        attributes.put("a", "xyz");
        
        List children = new ArrayList();
        children.add("someText");
        Node node1 = new Node(null, "person", "James");
        children.add(node1);
        children.add("moreText");
        Node node2 = new Node(null, "person", "Bob");
        children.add(node2);
        children.add("moreText");
        
        Node attribute = new Node(null, "foo", attributes, children);
        assertEquals("name", "foo", attribute.name());
        assertEquals("attributes", 1, attribute.attributes().size());
        assertEquals("value", 5, attribute.children().size());
        assertEquals("text", "someTextmoreTextmoreText", attribute.text());
        
        // let's test get
        List list = (List) attribute.get("person");
        assertEquals("Expected list size: " + list, 2, list.size());
        
        assertEquals("Node1", node1, list.get(0));
        assertEquals("Node2", node2, list.get(1));

        dump(attribute);
    }
    
    public void testNavigationUsingQNames() throws Exception {
        QName name1 = new QName("http://something", "foo", "f");
        
        Node node = new Node(null, null, new ArrayList());
        Node child = new Node(null, new QName("http://something", "foo", "f"), new HashMap(), new ArrayList());
        child.attributes().put("cheese", "Edam");
        Node grandChild = new Node(null, new QName("http://something", "bar", "f"), new HashMap(), new ArrayList());
        grandChild.attributes().put("drink", "Beer");
        grandChild.children().add("I am a youngling");
        child.children().add(grandChild);
        
        node.children().add(child);

        // let's look up by QName
        Object value = node.getAt(name1);
        assertTrue("Should return a list: " + value, value instanceof NodeList);
        NodeList list = (NodeList) value;
        assertEquals("Size", 1, list.size());
        
        Node answer = (Node) list.get(0);
        // check node
        assertNotNull("Node is null!", answer);
        assertEquals("namespace of node", "http://something", answer.name().namespaceURI);
        assertEquals("localPart of node", "foo", answer.name().localPart);

        // check grandchild
        NodeList gc = list.getAt(new QName("http://something", "bar"));
        assertEquals("grand children size", 1, gc.size());
        assertEquals("text of grandchildren", "I am a youngling", gc.text());
        assertEquals("namespace of grandchild[0]", "http://something", gc[0].name().namespaceURI);
    }

    public void testRemove() {
        def xml = '''
        <foo>
            <bar id="1" />
            <bar id="2" />
            <bar id="3" />
            <bar id="4" />
        </foo>'''
        Node foo = new XmlParser().parseText(xml)

        assert foo.bar.size() == 4
        assert foo.children().size() == 4
        assert foo.children().collect{ it.@id.toInteger() } == [1, 2, 3, 4]

        def bar2 = foo.bar.find {it.@id == '2'}
        bar2.parent().remove(bar2)
        assert ! bar2.parent()
        assert foo.bar.size() == 3
        assert foo.children().size() == 3
        assert foo.children().collect{ it.@id.toInteger() } == [1, 3, 4]
        assert ! foo.bar.contains(bar2)

        def bar3 = foo.children().get(1)
        foo.remove(bar3)
        assert ! bar3.parent()
        assert foo.bar.size() == 2
        assert foo.children().size() == 2
        assert foo.children().collect{ it.@id.toInteger() } == [1, 4]
        assert ! foo.bar.contains(bar3)
    }

    public void testMove() {
        def xml = '''
        <foo>
            <bar id="1" />
            <bar id="2" />
            <baz/>
        </foo>'''
        Node foo = new XmlParser().parseText(xml)

        assert foo.bar.size() == 2
        assert foo.children().size() == 3
        assert foo.children().collect{ it.@id?.toInteger() }.grep{it} == [1, 2]

        def bar2 = foo.bar.find {it.@id == '2'}
        bar2.parent().remove(bar2)
        def baz = foo.baz[0]
        assert ! bar2.parent()
        baz.append(bar2)
        assert bar2.parent() == baz
        assert foo.children().collect{ it.@id?.toInteger() }.grep{it} == [1]
        assert foo.baz.bar[0] == bar2
    }

    protected void dump(Node node) {
        NodePrinter printer = new NodePrinter();
        printer.print(node);
    }

}

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