RdfTripleImporterTests.java example

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OpenRefine-master
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package com.google.refine.tests.importers;

import java.io.ByteArrayInputStream;
import java.io.InputStream;
import java.io.StringReader;
import java.io.UnsupportedEncodingException;

import org.slf4j.LoggerFactory;
import org.testng.Assert;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.BeforeTest;
import org.testng.annotations.Test;

import com.google.refine.importers.RdfTripleImporter;
import com.google.refine.util.JSONUtilities;

public class RdfTripleImporterTests extends ImporterTest {
    
    @Override
    @BeforeTest
    public void init() {
        logger = LoggerFactory.getLogger(this.getClass());
    }
    
    
    //System Under Test
    RdfTripleImporter SUT = null;

    @Override
    @BeforeMethod
    public void setUp(){
        super.setUp();
        SUT = new RdfTripleImporter();
        JSONUtilities.safePut(options, "base-url", "http://rdf.freebase.com");
    }

    @Test(enabled=false)
    public void canParseSingleLineTriple(){
        String sampleRdf = "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.blood_on_the_tracks>.";
        StringReader reader = new StringReader(sampleRdf);

        try {
            parseOneFile(SUT, reader);
        } catch (Exception e) {
            Assert.fail();
        }

        Assert.assertEquals(project.columnModel.columns.size(), 2);
        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://rdf.freebase.com/ns/music.artist.album");
        Assert.assertEquals(project.rows.size(), 1);
        Assert.assertEquals(project.rows.get(0).cells.size(), 2);
        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://rdf.freebase.com/ns/en.bob_dylan");
        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "http://rdf.freebase.com/ns/en.blood_on_the_tracks");
    }

    @Test
    public void canParseMultiLineTriple() throws UnsupportedEncodingException {
        String sampleRdf = "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.blood_on_the_tracks>.\n" +
            "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.under_the_red_sky>.\n" +
            "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.bringing_it_all_back_home>.";
        InputStream input = new ByteArrayInputStream(sampleRdf.getBytes("UTF-8"));
        parseOneFile(SUT, input);

        //columns
        Assert.assertEquals(project.columnModel.columns.size(), 2);
        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://rdf.freebase.com/ns/music.artist.album");

        //rows
        Assert.assertEquals(project.rows.size(), 3);
        
        //row0
        Assert.assertEquals(project.rows.get(0).cells.size(), 2);
        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://rdf.freebase.com/ns/en.bob_dylan");
        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "http://rdf.freebase.com/ns/en.blood_on_the_tracks");

        //row1
        Assert.assertEquals(project.rows.get(1).cells.size(), 2);
        Assert.assertNull(project.rows.get(1).cells.get(0));
        Assert.assertEquals(project.rows.get(1).cells.get(1).value, "http://rdf.freebase.com/ns/en.under_the_red_sky"); 
        Assert.assertEquals(project.recordModel.getRowDependency(1).cellDependencies[1].rowIndex, 0);
        Assert.assertEquals(project.recordModel.getRowDependency(1).cellDependencies[1].cellIndex, 0);

        //row2
        Assert.assertEquals(project.rows.get(2).cells.size(), 2);
        Assert.assertNull(project.rows.get(2).cells.get(0));
        Assert.assertEquals(project.rows.get(2).cells.get(1).value, "http://rdf.freebase.com/ns/en.bringing_it_all_back_home");
        Assert.assertEquals(project.recordModel.getRowDependency(2).cellDependencies[1].rowIndex, 0);
        Assert.assertEquals(project.recordModel.getRowDependency(2).cellDependencies[1].cellIndex, 0);
    }

    @Test
    public void canParseMultiLineMultiPredicatesTriple() throws UnsupportedEncodingException {
        String sampleRdf = "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.blood_on_the_tracks>.\n" +
            "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.genre> <http://rdf.freebase.com/ns/en.folk_rock>.\n" +
            "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/music.artist.album> <http://rdf.freebase.com/ns/en.bringing_it_all_back_home>.";
        InputStream input = new ByteArrayInputStream(sampleRdf.getBytes("UTF-8"));
        parseOneFile(SUT, input);
 
        //columns
        Assert.assertEquals(project.columnModel.columns.size(), 3);
        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://rdf.freebase.com/ns/music.artist.album");
        Assert.assertEquals(project.columnModel.columns.get(2).getName(), "http://rdf.freebase.com/ns/music.artist.genre");
        
        //rows
        Assert.assertEquals(project.rows.size(), 2);

        //row0
        Assert.assertEquals(project.rows.get(0).cells.size(), 3);
        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://rdf.freebase.com/ns/en.bob_dylan");
        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "http://rdf.freebase.com/ns/en.blood_on_the_tracks");
        Assert.assertEquals(project.rows.get(0).cells.get(2).value, "http://rdf.freebase.com/ns/en.folk_rock");

        //row1
        Assert.assertEquals(project.rows.get(1).cells.size(), 2);
        Assert.assertNull(project.rows.get(1).cells.get(0));
        Assert.assertEquals(project.rows.get(1).cells.get(1).value, "http://rdf.freebase.com/ns/en.bringing_it_all_back_home");
        Assert.assertEquals(project.recordModel.getRowDependency(1).cellDependencies[1].rowIndex, 0);
        Assert.assertEquals(project.recordModel.getRowDependency(1).cellDependencies[1].cellIndex, 0);
    }
    
    @Test
    public void canParseTripleWithValue() throws UnsupportedEncodingException {
        String sampleRdf = "<http://rdf.freebase.com/ns/en.bob_dylan> <http://rdf.freebase.com/ns/common.topic.alias> \"Robert Zimmerman\"@en.";
        InputStream input = new ByteArrayInputStream(sampleRdf.getBytes("UTF-8"));
        
        SUT = new RdfTripleImporter(RdfTripleImporter.Mode.NT);
        parseOneFile(SUT, input);

        Assert.assertEquals(project.columnModel.columns.size(), 2);
        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://rdf.freebase.com/ns/common.topic.alias");
        Assert.assertEquals(project.rows.size(), 1);
        Assert.assertEquals(project.rows.get(0).cells.size(), 2);
        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://rdf.freebase.com/ns/en.bob_dylan");
        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "\"Robert Zimmerman\"@en");
    }    @Test
    
    public void parseRdfXml() throws UnsupportedEncodingException {
        // From W3C spec http://www.w3.org/TR/REC-rdf-syntax/#example8
        String sampleRdf = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n"
                + "<rdf:RDF xmlns:rdf=\"http://www.w3.org/1999/02/22-rdf-syntax-ns#\"\n"
                + "         xmlns:dc=\"http://purl.org/dc/elements/1.1/\">\n"
                + "  <rdf:Description rdf:about=\"http://www.w3.org/TR/rdf-syntax-grammar\">\n"
                + "    <dc:title>RDF/XML Syntax Specification (Revised)</dc:title>\n"
                + "    <dc:title xml:lang=\"en\">RDF/XML Syntax Specification (Revised)</dc:title>\n"
                + "    <dc:title xml:lang=\"en-US\">RDF/XML Syntax Specification (Revised)</dc:title>\n"
                + "  </rdf:Description>\n"
                + "\n"
                + "  <rdf:Description rdf:about=\"http://example.org/buecher/baum\" xml:lang=\"de\">\n"
                + "    <dc:title>Der Baum</dc:title>\n"
                + "    <dc:description>Das Buch ist außergewöhnlich</dc:description>\n"
                + "    <dc:title xml:lang=\"en\">The Tree</dc:title>\n"
                + "  </rdf:Description>\n"
                + "</rdf:RDF>\n";

        InputStream input = new ByteArrayInputStream(sampleRdf.getBytes("UTF-8"));
        SUT = new RdfTripleImporter(RdfTripleImporter.Mode.RDFXML);
        parseOneFile(SUT, input);

        Assert.assertEquals(project.columnModel.columns.size(), 3);
        Assert.assertEquals(project.columnModel.columns.get(0).getName(), "subject");
        Assert.assertEquals(project.columnModel.columns.get(1).getName(), "http://purl.org/dc/elements/1.1/title");
        Assert.assertEquals(project.columnModel.columns.get(2).getName(), "http://purl.org/dc/elements/1.1/description");
        Assert.assertEquals(project.rows.size(), 5);
        Assert.assertEquals(project.rows.get(0).cells.size(), 2);
        Assert.assertEquals(project.rows.get(0).cells.get(0).value, "http://www.w3.org/TR/rdf-syntax-grammar");
        Assert.assertEquals(project.rows.get(0).cells.get(1).value, "\"RDF/XML Syntax Specification (Revised)\"");
        Assert.assertEquals(project.rows.get(3).cells.size(), 3);
        Assert.assertEquals(project.rows.get(3).cells.get(0).value, "http://example.org/buecher/baum");
        Assert.assertEquals(project.rows.get(3).cells.get(1).value, "\"Der Baum\"@de");
        Assert.assertEquals(project.rows.get(3).cells.get(2).value, "\"Das Buch ist außergewöhnlich\"@de");
    }
}