core/src/test/java/org/apache/any23/extractor/rdfa/AbstractRDFaExtractorTestCase.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.any23.extractor.rdfa;

import org.apache.any23.extractor.html.AbstractExtractorTestCase;
import org.apache.any23.rdf.RDFUtils;
import org.apache.any23.vocab.DCTerms;
import org.apache.any23.vocab.FOAF;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * This class provides a common set of tests for an <i>RDFa</i> extractor.
 *
 * @author Michele Mostarda (mostarda@fbk.eu)
 */
public abstract class AbstractRDFaExtractorTestCase extends
		AbstractExtractorTestCase {

	protected static final DCTerms vDCTERMS = DCTerms.getInstance();
	protected static final FOAF vFOAF = FOAF.getInstance();

	Logger logger = LoggerFactory.getLogger(RDFaExtractorTest.class);

	/**
	 * Verify the basic RDFa support.
	 *
	 * @throws Exception if there is an issue asserting test values.
	 */
	@Test
	public void testBasic() throws Exception {
		assertExtract("/html/rdfa/basic.html");
		logger.info(dumpModelToNQuads());
		assertContains(null, vDCTERMS.creator, RDFUtils.literal("Alice", "en"));
		assertContains(null, vDCTERMS.title,
				RDFUtils.literal("The trouble with Bob", "en"));
		assertContains(null, RDFUtils.iri("http://fake.org/prop"),
				RDFUtils.literal("Mary", "en"));
	}

	/**
	 * This test check if the <a href="https://www.w3.org/TR/rdfa-core/#s_curieprocessing">RDFa1.1 CURIEs</a> 
	 * expansion is correct and backward compatible with 
	 * <a href="http://www.w3.org/TR/rdfa-syntax/#s_curieprocessing">RDFa 1.0</a>.
	 *
	 * @throws Exception if there is an issue asserting test values.
	 */
	@Test
	public void testRDFa11CURIEs() throws Exception {
		assertExtract("/html/rdfa/rdfa-11-curies.html");
		assertModelNotEmpty();
		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				RDFUtils.iri("http://dbpedia.org/name"),
				RDFUtils.literal("Albert Einstein"));
		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				RDFUtils.iri("http://dbpedia.org/knows"),
				RDFUtils.iri("http://dbpedia.org/resource/Franklin_Roosevlet"));
		assertContains(RDFUtils.iri("http://database.org/table/Departments"),
				RDFUtils.iri("http://database.org/description"),
				RDFUtils.literal("Tables listing departments"));
		assertContains(RDFUtils.iri("http://database.org/table/Departments"),
				RDFUtils.iri("http://database.org/owner"),
				RDFUtils.iri("http://database.org/people/Davide_Palmisano"));
		assertContains(RDFUtils.iri("http://database.org/table/Departments"),
				RDFUtils.iri("http://xmlns.com/foaf/0.1/author"),
				RDFUtils.iri("http://database.org/people/Davide_Palmisano"));
		assertContains(RDFUtils.iri("http://database.org/table/Departments"),
				RDFUtils.iri("http://purl.org/dc/01/name"),
				RDFUtils.literal("Departments"));
		assertStatementsSize(null, null, null, 6);
		logger.debug(dumpHumanReadableTriples());
	}

	/**
	 * This test checks if the subject of a property modeled as <i>RDFa</i> in a
	 * <i>XHTML</i> document where the subject contains inner <i>XML</i> tags is
	 * represented as a plain <i>Literal</i> stripping all the inner tags. For
	 * details see the <a href="http://www.w3.org/TR/rdfa-syntax/">RDFa in
	 * XHTML: Syntax and Processing</a> recommendation.
	 *
	 * @throws Exception if there an error asserting test values.
	 */
	@Test
	public void testEmptyDatatypeDeclarationWithInnerXMLTags() throws Exception {
		assertExtract("/html/rdfa/null-datatype-test.html");
		logger.debug(dumpModelToRDFXML());

		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				vFOAF.name, RDFUtils.literal("Albert Einstein", "en"));

	}

	/**
	 * This test checks if the <i>RDF</i> extraction is compliant to the <a
	 * href="http://www.w3.org/TR/rdfa-syntax/">RDFa in XHTML: Syntax and
	 * Processing</a> specification against the <a
	 * href="http://files.openspring.net/tmp/drupal-test-frontpage.html">Drupal
	 * test page</a>.
	 *
	 * @throws Exception if there an error asserting test values.
	 */
	@Test
	public void testDrupalTestPage() throws Exception {
		assertExtract("/html/rdfa/drupal-test-frontpage.html");
		logger.debug(dumpModelToTurtle());
		assertContains(RDFUtils.iri("http://bob.example.com/node/3"),
				vDCTERMS.title, RDFUtils.literal("A blog post...", "en"));
	}

	/**
	 * See RDFa 1.1 Specification section 6.2 .
	 *
	 * @throws Exception if there an error asserting test values.
	 */
	@Test
	public void testIncompleteTripleManagement() throws Exception {
		assertExtract("/html/rdfa/incomplete-triples.html");
		logger.debug(dumpModelToTurtle());

		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				RDFUtils.iri("http://dbpedia.org/property/birthPlace"),
				RDFUtils.iri("http://dbpedia.org/resource/Germany"));
		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Germany"),
				RDFUtils.iri("http://dbpedia.org/property/conventionalLongName"),
				RDFUtils.literal("Federal Republic of Germany"));
		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				RDFUtils.iri("http://dbpedia.org/property/citizenship"),
				RDFUtils.iri("http://dbpedia.org/resource/Germany"));
		assertContains(
				RDFUtils.iri("http://dbpedia.org/resource/Albert_Einstein"),
				RDFUtils.iri("http://dbpedia.org/property/citizenship"),
				RDFUtils.iri("http://dbpedia.org/resource/United_States"));
	}

}