libraries/kiwi/kiwi-reasoner/src/test/java/org/apache/marmotta/kiwi/reasoner/test/parser/KWRLRuleParserTest.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.marmotta.kiwi.reasoner.test.parser;

import com.google.common.collect.ImmutableMap;
import org.apache.marmotta.kiwi.reasoner.model.program.Rule;
import org.apache.marmotta.kiwi.reasoner.parser.KWRLProgramParser;
import org.apache.marmotta.kiwi.test.RepositoryTest;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.rules.TestWatcher;
import org.junit.runner.Description;
import org.openrdf.repository.Repository;
import org.openrdf.repository.sail.SailRepository;
import org.openrdf.sail.memory.MemoryStore;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Test parsing of individual rules
 *
 * @author Sebastian Schaffert (sschaffert@apache.org)
 */
public class KWRLRuleParserTest {

    private Repository repository;

    @Before
    public void setup() throws Exception {
        repository = new SailRepository(new MemoryStore());
        repository.initialize();
    }

    @After
    public void shutdown() throws Exception {
        repository.shutDown();
    }

    final Logger logger =
            LoggerFactory.getLogger(KWRLRuleParserTest.class);

    @org.junit.Rule
    public TestWatcher watchman = new TestWatcher() {
        /**
         * Invoked when a test is about to start
         */
        @Override
        protected void starting(Description description) {
            logger.info("{} being run...", description.getMethodName());
        }
    };

    @Test
    public void testRule1() throws Exception {
        String rule = "($1 http://www.w3.org/2000/01/rdf-schema#subClassOf $2), ($2 http://www.w3.org/2000/01/rdf-schema#subClassOf $3) -> ($1 http://www.w3.org/2000/01/rdf-schema#subClassOf $3)";
        Rule r = KWRLProgramParser.parseRule(rule,repository.getValueFactory());

        Assert.assertNotNull(r);
        Assert.assertEquals(2, r.getBody().size());
        Assert.assertTrue(r.getHead().getSubject().isVariableField());
        Assert.assertTrue(r.getHead().getProperty().isResourceField());
        Assert.assertTrue(r.getHead().getObject().isVariableField());
    }

    @Test
    public void testRule2() throws Exception {
        String rule = "($1 rdfs:subClassOf $2), ($2 rdfs:subClassOf $3) -> ($1 rdfs:subClassOf $3)";
        Rule r = KWRLProgramParser.parseRule(rule, ImmutableMap.of("rdfs", "http://www.w3.org/2000/01/rdf-schema#"), repository.getValueFactory());

        Assert.assertNotNull(r);
        Assert.assertEquals(2, r.getBody().size());
        Assert.assertTrue(r.getHead().getSubject().isVariableField());
        Assert.assertTrue(r.getHead().getProperty().isResourceField());
        Assert.assertTrue(r.getHead().getObject().isVariableField());
    }

    @Test
    public void testRule3() throws Exception {
        String rule = "($1 $2 $3) -> ($1 $2 \"Hello\"@en)";
        Rule r = KWRLProgramParser.parseRule(rule, ImmutableMap.of("rdfs", "http://www.w3.org/2000/01/rdf-schema#"), repository.getValueFactory());

        Assert.assertNotNull(r);
        Assert.assertEquals(1, r.getBody().size());
        Assert.assertTrue(r.getHead().getSubject().isVariableField());
        Assert.assertTrue(r.getHead().getProperty().isVariableField());
        Assert.assertTrue(r.getHead().getObject().isLiteralField());
    }

    @Test
    public void testRule4() throws Exception {
        String rule = "($1 $2 $3) -> ($1 $2 \"Bonjour\"@fr)";
        Rule r = KWRLProgramParser.parseRule(rule, ImmutableMap.of("rdfs", "http://www.w3.org/2000/01/rdf-schema#"), repository.getValueFactory());

        Assert.assertNotNull(r);
        Assert.assertEquals(1, r.getBody().size());
        Assert.assertTrue(r.getHead().getSubject().isVariableField());
        Assert.assertTrue(r.getHead().getProperty().isVariableField());
        Assert.assertTrue(r.getHead().getObject().isLiteralField());
    }

}