/**

  * Alt2XML

  * Copyright © 2014 František Kučera (frantovo.cz)

  *

  * This program is free software: you can redistribute it and/or modify

  * it under the terms of the GNU General Public License as published by

  * the Free Software Foundation, either version 3 of the License, or

  * (at your option) any later version.

  *

  * This program is distributed in the hope that it will be useful,

  * but WITHOUT ANY WARRANTY; without even the implied warranty of

  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

  * GNU General Public License for more details.

  *

  * You should have received a copy of the GNU General Public License

  * along with this program. If not, see <http://www.gnu.org/licenses/>.

  */

 package cz.frantovo.alt2xml.out.xpath;

 import cz.frantovo.alt2xml.out.ActionContext;

 import java.io.ByteArrayOutputStream;

 import java.util.ArrayList;

 import java.util.List;

 import java.util.Properties;

 import javax.xml.parsers.DocumentBuilder;

 import javax.xml.parsers.DocumentBuilderFactory;

 import javax.xml.parsers.ParserConfigurationException;

 import javax.xml.transform.dom.DOMResult;

 import static org.testng.Assert.*;

 import org.testng.annotations.BeforeMethod;

 import org.testng.annotations.Test;

 /**

  *

  * @author Ing. František Kučera (frantovo.cz)

  */

 public class XPathActionNGTest {

 	private final DocumentBuilderFactory documentBuilderFactory;

 	private final DocumentBuilder documentBuilder;

 	private Properties actionProperties;

 	private List<String> actionData;

 	public XPathActionNGTest() throws ParserConfigurationException {

 		documentBuilderFactory = DocumentBuilderFactory.newInstance();

 		documentBuilder = documentBuilderFactory.newDocumentBuilder();

 	}

 	private DOMResult makeEmptyResult() {

 		return new DOMResult(documentBuilder.newDocument());

 	}

 	private static byte[] makeStringResult(String value) {

 		return (value + "\n").getBytes();

 	}

 	@BeforeMethod

 	public void setupMethod() {

 		actionProperties = new Properties();

 		actionData = new ArrayList<>();

 		System.out.println("\n--- Output: --------");

 	}

 	@Test

 	public void testRun_simple() throws Exception {

 		actionData.add("1+1");

 		doTest(makeEmptyResult(), actionData, actionProperties, makeStringResult("2"));

 	}

 	private void setTyped(Boolean typed) {

 		actionProperties.put(XPathAction.PARAMETER_TYPED_PARAMETERS, typed.toString());

 	}

 	@Test

 	public void testRun_simpleParameters() throws Exception {

 		setTyped(false);

 		actionData.add("1+$a");

 		actionData.add("a");

 		actionData.add("2");

 		doTest(makeEmptyResult(), actionData, actionProperties, makeStringResult("3"));

 	}

 	@Test

 	public void testRun_simpleMoreParameters() throws Exception {

 		setTyped(false);

 		actionData.add("$a+$b");

 		actionData.add("a");

 		actionData.add("2");

 		actionData.add("b");

 		actionData.add("4");

 		doTest(makeEmptyResult(), actionData, actionProperties, makeStringResult("6"));

 	}

 	@Test

 	public void testRun_simpleTypedParameters() throws Exception {

 		setTyped(true);

 		actionData.add("$a+$b");

 		actionData.add("a");

 		actionData.add("InteGER");

 		actionData.add("4");

 		actionData.add("b");

 		actionData.add("integeR");

 		actionData.add("4");

 		doTest(makeEmptyResult(), actionData, actionProperties, makeStringResult("8"));

 	}

 	private void doTest(DOMResult domResult, List<String> actionData, Properties actionProperties, byte[] expectedResult) throws Exception {

 		ByteArrayOutputStream baos = new ByteArrayOutputStream();

 		ActionContext actionContext = new ActionContext(baos);

 		actionContext.setActionProperties(actionProperties);

 		actionContext.setActionData(actionData);

 		XPathAction instance = new XPathAction(actionContext);

 		instance.run(domResult);

 		System.out.write(baos.toByteArray());

 		assertEquals(baos.toByteArray(), expectedResult);

 	}

 }