package com.google.code.facebookapi;

import static org.junit.Assert.assertTrue;

import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathFactory;

import org.junit.Test;
import org.w3c.dom.Document;

/**
 * For this test to work, the owner of the API KEY in use when running the JUnit test must have photos *of themself*.
 * 
 * If you're running the test as yourself, that's probably the case anyway. If you're running it as a batch test user, ensure that at least one photo is posted for that
 * fake user.
 */
public class Issue41PhotosGetSubjectTest {

	@Test
	public void testGetPhotosBySubject() throws Exception {
		FacebookXmlRestClient client = FacebookSessionTestUtils.getValidClient( FacebookXmlRestClient.class );

		long apiUserId = client.users_getLoggedInUser();

		Document result = client.photos_get( apiUserId );

		XPathFactory factory = XPathFactory.newInstance();
		XPath xpath = factory.newXPath();
		xpath.setNamespaceContext( new FacebookNamespaceContext() );

		String numOfPhotos = xpath.evaluate( "count(//fbapi:photo)", result );

		assertTrue( "No photos tagged with user found. (For this test to pass test user must have at least one tagged photo)", Integer.parseInt( numOfPhotos ) > 0 );
	}

}