/*
 * 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.lang;

import java.io.StringReader ;

import org.apache.jena.atlas.lib.CharSpace ;
import org.apache.jena.atlas.lib.StrUtils ;
import org.apache.jena.graph.Graph ;
import org.apache.jena.rdf.model.Model ;
import org.apache.jena.rdf.model.ModelFactory ;
import org.apache.jena.riot.ErrorHandlerTestLib.ErrorHandlerEx ;
import org.apache.jena.riot.ErrorHandlerTestLib.ExFatal ;
import org.apache.jena.riot.Lang ;
import org.apache.jena.riot.RDFDataMgr ;
import org.apache.jena.riot.RDFLanguages ;
import org.apache.jena.riot.RiotException ;
import org.apache.jena.riot.system.StreamRDFLib ;
import org.apache.jena.riot.tokens.Tokenizer ;
import org.apache.jena.sparql.sse.SSE ;
import org.junit.Test ;

/** Test of syntax by a triples parser (does not include node validitiy checking) */ 

public class TestLangNTriples extends TestLangNTuples
{
    // Test streaming interface.

    @Override
    protected Lang getLang() {
        return Lang.NTRIPLES ;
    }

    @Test
    public void nt_reader_twice() {
        String s = "_:a <p> 'foo' . ";
        StringReader r = new StringReader(s);
        Model m = ModelFactory.createDefaultModel();

        RDFDataMgr.read(m, r, null, RDFLanguages.NTRIPLES);
        assertEquals(1, m.size());

        String x = m.listStatements().next().getSubject().getId().getLabelString();
        assertNotEquals(x, "a");

        // reset - reread - new bNode.
        r = new StringReader(s);
        RDFDataMgr.read(m, r, null, RDFLanguages.NTRIPLES);
        assertEquals(2, m.size());
    }

    @Test
    public void nt_model_1() {
        Model m1 = parseToModel("<x> <p> \"abc-\\u00E9\". ");
        assertEquals(1, m1.size());
        Model m2 = parseToModel("<x> <p> \"abc-\\u00E9\". ");
        assertTrue(m1.isIsomorphicWith(m2));
        Graph g1 = SSE.parseGraph("(graph (triple <x> <p> \"abc-é\"))");
        assertTrue(g1.isIsomorphicWith(m1.getGraph()));
    }

    @Test(expected = ExFatal.class)
    public void nt_only_1() {
        parseCount("<x> <p> <s> <g> .");
    }

    @Test(expected = ExFatal.class)
    public void nt_only_2() {
        parseCount("@base <http://example/> . <x> <p> <s> .");
    }

    @Test
    public void nt_only_5() {
        parseCount("<x> <p> \"é\" .");
    }

    @Override
    protected long parseCount(String... strings) {
        return ParserTestBaseLib.parseCount(Lang.NTRIPLES, strings) ;
    }

    @Test(expected = RiotException.class)
    public void nt_only_5b() {
        parseCount(CharSpace.ASCII, "<x> <p> \"é\" .");
    }

    private long parseCount(CharSpace charSpace, String... strings) {
        String string = StrUtils.strjoin("\n", strings);
        Tokenizer tokenizer = tokenizer(charSpace, string);
        StreamRDFCounting sink = StreamRDFLib.count();
        LangNTriples x = RiotParsers.createParserNTriples(tokenizer, sink);
        x.getProfile().setHandler(new ErrorHandlerEx());
        x.parse();
        return sink.count();
    }

    protected Model parseToModel(String string) {
        StringReader r = new StringReader(string);
        Model model = ModelFactory.createDefaultModel();
        RDFDataMgr.read(model, r, null, RDFLanguages.NTRIPLES);
        return model;
    }
}