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 * JBoss, Home of Professional Open Source
 * Copyright 2010, Red Hat, Inc., and individual contributors
 * by the @authors tag. See the copyright.txt in the distribution for a
 * full listing of individual contributors.
 *
 * 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.jboss.weld.tests.contexts.errorpage;

import java.net.URL;
import java.util.HashSet;
import java.util.Set;

import org.junit.Assert;

import org.jboss.arquillian.container.test.api.Deployment;
import org.jboss.arquillian.junit.Arquillian;
import org.jboss.arquillian.test.api.ArquillianResource;
import org.jboss.shrinkwrap.api.ShrinkWrap;
import org.jboss.shrinkwrap.api.asset.EmptyAsset;
import org.jboss.shrinkwrap.api.spec.WebArchive;
import org.jboss.weld.test.util.Utils;
import org.jboss.weld.tests.category.Integration;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import com.gargoylesoftware.htmlunit.WebClient;
import com.gargoylesoftware.htmlunit.html.HtmlDivision;
import com.gargoylesoftware.htmlunit.html.HtmlElement;
import com.gargoylesoftware.htmlunit.html.HtmlPage;
import com.gargoylesoftware.htmlunit.html.HtmlSubmitInput;
import com.gargoylesoftware.htmlunit.html.HtmlTextInput;

/**
 * <p>This test was mostly developed to test the scenario related to WELD-29.  Essentially
 * a JSF action throws an exception, and the error page is then rendered during which
 * all relevant scopes for CDI are tested.</p>
 *
 * @author David Allen
 */
@Category(Integration.class)
@RunWith(Arquillian.class)
public class ErrorPageTest {

    @ArquillianResource
    private URL url;
    
    @Deployment(testable = false)
    public static WebArchive createDeployment() {
        return ShrinkWrap.create(WebArchive.class, Utils.getDeploymentNameAsHash(ErrorPageTest.class, Utils.ARCHIVE_TYPE.WAR))
                .addClasses(Storm.class, Rain.class)
                .addAsWebInfResource(ErrorPageTest.class.getPackage(), "web.xml", "web.xml")
                .addAsWebInfResource(ErrorPageTest.class.getPackage(), "faces-config.xml", "faces-config.xml")
                .addAsWebResource(ErrorPageTest.class.getPackage(), "error.xhtml", "error.xhtml")
                .addAsWebResource(ErrorPageTest.class.getPackage(), "storm.xhtml", "storm.xhtml")
                .addAsWebInfResource(EmptyAsset.INSTANCE, "beans.xml");
    }
    
    @Test
    public void testActionMethodExceptionDoesNotDestroyContext() throws Exception {
        WebClient client = new WebClient();
        client.setThrowExceptionOnFailingStatusCode(false);

        HtmlPage page = client.getPage(getPath("/storm.jsf"));
        HtmlSubmitInput disasterButton = getFirstMatchingElement(page, HtmlSubmitInput.class, "disasterButton");
        HtmlTextInput strength = getFirstMatchingElement(page, HtmlTextInput.class, "stormStrength");
        strength.setValueAttribute("10");
        page = disasterButton.click();
        Assert.assertEquals("Application Error", page.getTitleText());

        HtmlDivision conversationValue = getFirstMatchingElement(page, HtmlDivision.class, "conversation");
        Assert.assertEquals("10", conversationValue.asText());

        HtmlDivision requestValue = getFirstMatchingElement(page, HtmlDivision.class, "request");
        Assert.assertEquals("medium", requestValue.asText());
    }

    protected String getPath(String page) {
        return url.toString() + page;
    }

    protected <T> Set<T> getElements(HtmlElement rootElement, Class<T> elementClass) {
        Set<T> result = new HashSet<T>();

        for (HtmlElement element : rootElement.getChildElements()) {
            result.addAll(getElements(element, elementClass));
        }

        if (elementClass.isInstance(rootElement)) {
            result.add(elementClass.cast(rootElement));
        }
        return result;

    }

    protected <T extends HtmlElement> T getFirstMatchingElement(HtmlPage page, Class<T> elementClass, String id) {

        Set<T> inputs = getElements(page.getBody(), elementClass);
        for (T input : inputs) {
            if (input.getId().contains(id)) {
                return input;
            }
        }
        return null;
    }
}