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 * CruiseControl, a Continuous Integration Toolkit
 * Copyright (c) 2005, ThoughtWorks, Inc.
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package net.sourceforge.cruisecontrol.util;

import junit.framework.TestCase;
import net.sourceforge.cruisecontrol.CruiseControlException;
import net.sourceforge.cruisecontrol.testutil.TestUtil;
import org.jdom.Element;

import java.io.ByteArrayInputStream;

public class XPathAwareChildTest extends TestCase {


    public void testFailsIfCurrentLogNotSet() {
        XPathAwareChild xpathField = new XPathAwareChild();
        xpathField.setXPathExpression("foo");

        try {
            xpathField.validate();
            xpathField.lookupValue(null);
            fail("Expected an exception");
        } catch (CruiseControlException expected) {
            assertTrue(expected.getMessage().indexOf("current cruisecontrol log not set") >= 0);
        }
    }


    public void testXPathExpression() throws CruiseControlException {
        String xmlDocument = "<foo><bar>baz</bar></foo>";
        String bazXPath = "/foo/bar/text()";

        XPathAwareChild xpathField = new XPathAwareChild();
        xpathField.setXPathExpression(bazXPath);
        xpathField.setInputStream(new ByteArrayInputStream(xmlDocument.getBytes()));

        xpathField.validate();
        assertEquals("baz", xpathField.lookupValue(null));
    }

    public void testXPathExpressionAndValueSetOnField() {
        XPathAwareChild xpathField = new XPathAwareChild();
        xpathField.setValue("foo");
        xpathField.setXPathExpression("bar");

        try {
            xpathField.validate();
            fail("Expected a validation exception");
        } catch (CruiseControlException expected) {
        }
    }

    public void testXPathExpressionAndValueSetOnDescription() {
        XPathAwareChild description = new XPathAwareChild();
        description.setValue("foo");
        description.setXPathExpression("bar");

        try {
            description.validate();
            fail("Expected a validation exception");
        } catch (CruiseControlException expected) {
        }
    }

    public void testXMLFileShouldDefaultToLog() throws CruiseControlException {
        String bazXPath = "/cruisecontrol/info/property[@name='builddate']/@value";

        XPathAwareChild xpathField = new XPathAwareChild();
        xpathField.setXPathExpression(bazXPath);
        Element log = TestUtil.createElement(true, true);

        assertNotNull(log.getDocument());

        xpathField.validate();
        assertEquals("11/30/2005 12:07:27", xpathField.lookupValue(log));
    }

    public void testMustValidateFirst() throws CruiseControlException {
        XPathAwareChild child = new XPathAwareChild();
        try {
            child.lookupValue(null);
            fail("Expected an exception");
        } catch (IllegalStateException expected) {
        }
    }

    public void testXmlFileShouldOnlyBeSetIfXPathExpression() {
        XPathAwareChild child = new XPathAwareChild();
        child.setXMLFile("foo");
        try {
            child.validate();
            fail("Should not be able to validate.");
        } catch (CruiseControlException expected) {
            assertTrue("wrong exception caught",
                    expected.getMessage().indexOf("xmlFile should only be set if xpathExpression is also set.") >= 0);
        }
    }
}