jena-arq/src/test/java/org/apache/jena/riot/TestTurtleWriterPretty.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.jena.riot;

import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import static org.junit.Assume.assumeTrue;

import java.util.ArrayList;
import java.util.List;

import org.apache.jena.graph.Graph;
import org.apache.jena.sparql.graph.GraphFactory;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;

/** Tests for Turtle and Trig pertty format */
@RunWith(Parameterized.class)
public class TestTurtleWriterPretty {
    @Parameters(name = "{index}: {0}")
    public static Iterable<Object[]> data() {
        List<Object[]> x = new ArrayList<>() ;
        x.add(new Object[]{"Turtle/Pretty", RDFFormat.TURTLE_PRETTY});
        x.add(new Object[]{"Trig/Pretty", RDFFormat.TRIG_PRETTY});
        return x ; 
    }
    
    private static String DIR = "testing/RIOT/Writer/";

    private static String BASE = "http://BASE/";

    private final RDFFormat format;

    private final String filename;

    public TestTurtleWriterPretty(String name, RDFFormat format) {
        this.format = format;
        if ( format.getLang().equals(Lang.TRIG) )
            this.filename = DIR+"rdfwriter-02.trig";
        else
            this.filename = DIR+"rdfwriter-01.ttl";
    }
    
    // read file, with external base URI
    private static Graph data(String fn, String baseURI) {
        Graph g1 = GraphFactory.createDefaultGraph();
        RDFParser.create()
            .base(BASE)
            .source(fn)
            .parse(g1);
        return g1;
    }

    // Stream writer (BLOCKS and FLAT) don't print a base URI unless explicitly given one in the data.
   
    @Test public void writer_parse_base_2() {
        assumeTrue(format.getVariant().equals(RDFFormat.PRETTY));
        
        Graph g = data(filename, BASE);

        String written = 
            RDFWriter.create()
                .base(BASE)
                .source(g)
                .set(RIOT.symTurtleDirectiveStyle, "sparql")
                .set(RIOT.symTurtleOmitBase, true)
                .format(format)
                .base(BASE)
                .asString();
        {
            // Same base URI => same graph
            Graph g1 = GraphFactory.createDefaultGraph();
            RDFParser.create()
                .base(BASE)
                .fromString(written)
                .lang(Lang.TTL)
                .parse(g1);
            assertTrue(g.isIsomorphicWith(g1));
        }
        {
            // Different base URI => different graph
            Graph g2 = GraphFactory.createDefaultGraph();
            String BASE2 = "http://BASE2/";
            RDFParser.create()
                .base(BASE2)
                .fromString(written)
                .lang(Lang.TTL)
                .parse(g2);
            assertFalse(g.isIsomorphicWith(g2));
        }
    }
}