org.xchain.namespaces.core.TestForEachCommand.java Source code

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Here is the source code for org.xchain.namespaces.core.TestForEachCommand.java

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/**
 *    Copyright 2011 meltmedia
 *
 *    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.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */
package org.xchain.namespaces.core;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.List;

import javax.xml.namespace.QName;

import org.apache.commons.jxpath.JXPathContext;
import org.junit.After;
import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.xchain.Catalog;
import org.xchain.Command;
import org.xchain.framework.factory.CatalogFactory;
import org.xchain.framework.lifecycle.Lifecycle;

/**
 * @author Devon Tackett
 * @author Christian Trimble
 */
public class TestForEachCommand {
    public static final String CATALOG_URI = "resource://context-class-loader/org/xchain/namespaces/core/for-each-command.xchain";
    public static final String XCHAIN_NAMESPACE_URI = "http://www.xchain.org/core/1.0";
    public static final String TEST_NAMESPACE_URI = "http://www.xchain.org/test";
    public static final String TEST_NAMESPACE = "different-name";
    public static final QName SELECT_COUNT_COMMAND = new QName(XCHAIN_NAMESPACE_URI, "select-count-test");
    public static final QName RELATIVE_PATH = new QName(XCHAIN_NAMESPACE_URI, "relative-path");
    public static final QName ROOT_PATH = new QName(XCHAIN_NAMESPACE_URI, "root-path");
    public static final String COUNT_VARIABLE = "count";
    public static final String VALUE_VARIABLE = "value";
    public static final String TEST_LIST = "testList";

    private static final int MULTIPLE_ENTRY_COUNT = 99;

    protected JXPathContext context = null;
    protected Catalog catalog = null;
    protected Command command = null;

    @BeforeClass
    public static void setUpLifecycle() throws Exception {
        Lifecycle.startLifecycle();
    }

    @AfterClass
    public static void tearDownLifecycle() throws Exception {
        Lifecycle.stopLifecycle();
    }

    @Before
    public void setUp() throws Exception {
        Node rootNode = new Node("root");
        Node childNode = new Node("child");
        rootNode.getChildList().add(childNode);

        context = JXPathContext.newContext(rootNode);
        // Initialize the count variable to zero.
        context.getVariables().declareVariable(COUNT_VARIABLE, 0);

        catalog = CatalogFactory.getInstance().getCatalog(CATALOG_URI);
    }

    @After
    public void tearDown() throws Exception {
        context = null;
    }

    @Test
    public void testSelectSingle() throws Exception {
        // Get the command.
        Command command = catalog.getCommand(SELECT_COUNT_COMMAND);

        // Define the test list with a single entry.
        List<Object> testList = new ArrayList<Object>();
        testList.add(new Object());
        context.getVariables().declareVariable(TEST_LIST, testList);

        // execute the command.
        command.execute(context);

        // Get the count.
        int countValue = (Integer) context.getValue("$" + COUNT_VARIABLE, Integer.class);

        assertEquals("The count for list with single entry failed.", 1, countValue);
    }

    @Test
    public void testSelectMultiple() throws Exception {
        // Get the command.
        Command command = catalog.getCommand(SELECT_COUNT_COMMAND);

        // Define the test list with a single entry.
        List<Object> testList = new ArrayList<Object>();

        // Add count entries.
        for (int count = 0; count < MULTIPLE_ENTRY_COUNT; count++)
            testList.add(new Object());

        context.getVariables().declareVariable(TEST_LIST, testList);

        // execute the command.
        command.execute(context);

        // Get the count.
        int countValue = (Integer) context.getValue("$" + COUNT_VARIABLE, Integer.class);

        assertEquals("The count for list with " + MULTIPLE_ENTRY_COUNT + " entries failed.", MULTIPLE_ENTRY_COUNT,
                countValue);
    }

    @Test
    public void testSelectEmpty() throws Exception {
        // Get the command.
        Command command = catalog.getCommand(SELECT_COUNT_COMMAND);

        // Define the test list with a single entry.
        List<Object> testList = new ArrayList<Object>();
        context.getVariables().declareVariable(TEST_LIST, testList);

        // execute the command.
        command.execute(context);

        // Get the count.
        int countValue = (Integer) context.getValue("$" + COUNT_VARIABLE, Integer.class);

        assertEquals("The count for list with no entries failed.", 0, countValue);
    }

    @Test
    public void testRelativePath() throws Exception {
        // Get the command.
        Command command = catalog.getCommand(RELATIVE_PATH);

        // execute the command.
        command.execute(context);

        // get the value.
        String value = (String) context.getValue("$value", String.class);

        // assert that the value is the name of the child.
        assertEquals("A relative path did not point to the correct value.", "child", value);
    }

    @Test
    public void testRootPath() throws Exception {
        // Get the command.
        Command command = catalog.getCommand(ROOT_PATH);

        // execute the command.
        command.execute(context);

        // get the value.
        String value = (String) context.getValue("$value", String.class);

        // assert that the value is the name of the child.
        assertEquals("A relative path did not point to the correct value.", "root", value);
    }

    public static class Node {
        protected String name = null;
        protected List<Node> childList = new ArrayList<Node>();

        public Node(String name) {
            this.name = name;
        }

        public String getName() {
            return this.name;
        }

        public List<Node> getChildList() {
            return this.childList;
        }
    }
}