TestCodec.java example

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/*
 * 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.tdb.store.nodetable;

import java.nio.ByteBuffer ;
import java.util.Arrays ;
import java.util.Collection ;

import org.apache.jena.atlas.junit.BaseTest ;
import org.apache.jena.atlas.lib.ByteBufferLib ;
import org.apache.jena.graph.Node ;
import org.apache.jena.sparql.util.NodeFactoryExtra ;
import org.junit.Test ;
import org.junit.runner.RunWith ;
import org.junit.runners.Parameterized ;
import org.junit.runners.Parameterized.Parameters ;

@RunWith(Parameterized.class)
public class TestCodec extends BaseTest 
{
    static private final String asciiBase             = "abc" ;
    static private final String latinBase             = "Àéíÿ" ;
    static private final String latinExtraBase        = "ỹﬁﬂ" ;     // fi-ligature, fl-ligature
    static private final String greekBase             = "αβγ" ;
    static private final String hewbrewBase           = "אבג" ;
    static private final String arabicBase            = "ءآأ";
    static private final String symbolsBase           = "☺☻♪♫" ;
    static private final String chineseBase           = "孫子兵法" ; // The Art of War 
    static private final String japaneseBase          = "日本" ;    // Japanese
    
    // Each Object[] becomes the arguments to the class constructor (with reflection)
    // Reflection is not sensitive to generic parameterization (it's type erasure) 
    @Parameters public static Collection<Object[]> data()
    { 
        return Arrays.asList(new Object[][]
                                        { { new NodecSSE() } } 
                                        ) ;                                        
    }

    private Nodec nodec ;
    
    public TestCodec(Nodec nodec) { this.nodec = nodec ; }
    
    @Test public void nodec_lit_01()    { test ("''") ; }
    @Test public void nodec_lit_02()    { test ("'a'") ; }
    @Test public void nodec_lit_03()    { test ("'ab'") ; }
    @Test public void nodec_lit_04()    { test ("'abc'") ; }
    @Test public void nodec_lit_05()    { test ("'abcd'") ; }
    
    @Test public void nodec_lit_06()    { test ("''@e") ; }
    @Test public void nodec_lit_07()    { test ("''@en") ; }
    @Test public void nodec_lit_08()    { test ("''@EN-uk") ; }
    @Test public void nodec_lit_09()    { test ("'\\n'@EN-uk") ; }
    
    @Test public void nodec_lit_10()    { test ("'"+latinBase+"'") ; }
    @Test public void nodec_lit_11()    { test ("'"+latinExtraBase+"'") ; }
    @Test public void nodec_lit_12()    { test ("'"+greekBase+"'") ; }
    @Test public void nodec_lit_13()    { test ("'"+hewbrewBase+"'") ; }
    @Test public void nodec_lit_14()    { test ("'"+arabicBase+"'") ; }
    @Test public void nodec_lit_15()    { test ("'"+symbolsBase+"'") ; }
    @Test public void nodec_lit_16()    { test ("'"+chineseBase+"'") ; }
    @Test public void nodec_lit_17()    { test ("'"+japaneseBase+"'") ; }
    
    @Test public void nodec_lit_20()    { test ("1") ; }
    @Test public void nodec_lit_21()    { test ("12.3") ; }
    @Test public void nodec_lit_22()    { test ("''^^<>") ; }

    // Bad Unicode.
    static private final String binaryStr1            = "abc\uD800xyz" ;    // A single surrogate, without it's pair. 
    static private final String binaryStr2            = "\uD800" ;          // A single surrogate, without it's pair. 
    static private final String binaryStr3            = "\u0000" ;          // A zero character  

    @Test public void nodec_lit_30()    { test ("'"+binaryStr1+"'") ; }
    @Test public void nodec_lit_31()    { test ("'"+binaryStr2+"'") ; }
    @Test public void nodec_lit_32()    { test ("'"+binaryStr3+"'") ; }

    
    @Test public void nodec_uri_01()    { test ("<>") ; }
    @Test public void nodec_uri_02()    { test ("<http://example/>") ; }
    
    // Jena anon ids can have a string form including ":"
    @Test public void nodec_blank_01()  { test (org.apache.jena.graph.NodeFactory.createBlankNode("a")) ; }
    @Test public void nodec_blank_02()  { test (org.apache.jena.graph.NodeFactory.createBlankNode("a:b:c-d")) ; }
    @Test public void nodec_blank_03()  { test (org.apache.jena.graph.NodeFactory.createBlankNode()) ; }
    
    private void test(String sseString)
    {
        Node n = NodeFactoryExtra.parseNode(sseString) ;
        test(n) ;
    }
    
    private void test(Node n)
    {
        int maxSize = nodec.maxSize(n) ;
        ByteBuffer bb = ByteBuffer.allocate(maxSize) ;
        int x = nodec.encode(n, bb, null) ;
        int bbLen = bb.limit()-bb.position();
        assertEquals(bbLen, x) ;
        assertEquals(0, bb.position()) ;
        
        ByteBuffer bb2 = ByteBufferLib.duplicate(bb) ;
        Node n2 = nodec.decode(bb2, null) ;
        assertEquals(n, n2) ;
    }
}