TripleObjectRetrieverTest.java

/*
 * Copyright 2013, 2014 Deutsche Nationalbibliothek
 *
 * 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.culturegraph.mf.triples;

import static org.mockito.Mockito.verify;
import static org.mockito.Mockito.verifyZeroInteractions;

import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;

import org.culturegraph.mf.framework.ObjectReceiver;
import org.culturegraph.mf.framework.objects.Triple;
import org.culturegraph.mf.framework.objects.Triple.ObjectType;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TemporaryFolder;
import org.mockito.Mock;
import org.mockito.MockitoAnnotations;

/**
 * Tests for class {@link TripleObjectRetriever}.
 *
 * @author Christoph Böhme
 *
 */
public final class TripleObjectRetrieverTest {

	private static final String SUBJECT = "subject";
	private static final String PREDICATE = "predicate";
	private static final String OBJECT_VALUE = "object-data";
	private static final String ENTITY = "{l=v}";

	private TripleObjectRetriever tripleObjectRetriever;

	@Mock
	private ObjectReceiver<Triple> receiver;

	@Rule
	public TemporaryFolder tempFolder = new TemporaryFolder();

	private String objectUrl;

	@Before
	public void setup() throws IOException {
		MockitoAnnotations.initMocks(this);

		tripleObjectRetriever = new TripleObjectRetriever();
		tripleObjectRetriever.setReceiver(receiver);

		objectUrl = createObjectResource(OBJECT_VALUE);
	}

	private String createObjectResource(final String contents) throws IOException {
		final File file = tempFolder.newFile();
		final Writer writer = new FileWriter(file);
		writer.write(contents);
		writer.close();
		return file.toURI().toURL().toString();
	}

	@After
	public void cleanup() {
		tripleObjectRetriever.closeStream();
	}

	@Test
	public void shouldReplaceObjectValueWithResourceContentRetrievedFromUrl() {
		tripleObjectRetriever.process(new Triple(SUBJECT, PREDICATE, objectUrl));

		verify(receiver).process(new Triple(SUBJECT, PREDICATE, OBJECT_VALUE));
	}

	@Test
	public void shouldSkipTriplesWithObjectTypeEntity() {
		tripleObjectRetriever.process(
				new Triple(SUBJECT, PREDICATE, ENTITY, ObjectType.ENTITY));

		verifyZeroInteractions(receiver);
	}

}