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* 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
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* distributed under the License is distributed on an "AS IS" BASIS,
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package org.apache.jena.graph.compose.test;
import junit.framework.TestSuite ;
import org.apache.jena.graph.Graph ;
import org.apache.jena.graph.compose.Difference ;
public class TestDifference extends TestDyadic
{
public TestDifference( String name )
{ super( name ); }
public static TestSuite suite()
{ return new TestSuite( TestDifference.class ); }
@Override
public Graph getGraph()
{
Graph gBase = graphWith( "" ), g1 = graphWith( "" );
return new Difference( gBase, g1 );
}
public Difference differenceOf(String s1, String s2) {
return new Difference( graphWith( s1 ), graphWith( s2 ) );
}
public void testStaticDifference() {
assertIsomorphic( graphWith( "" ), differenceOf( "", "" ) );
assertIsomorphic( graphWith( "x R y" ), differenceOf( "x R y", "" ) );
assertIsomorphic( graphWith( "" ), differenceOf( "", "x R y" ) );
assertIsomorphic( graphWith( "" ), differenceOf( "x R y", "x R y" ) );
assertIsomorphic( graphWith( "p R q" ), differenceOf( "x R y; p R q", "r A s; x R y" ) );
}
public void testDifferenceReflectsChangesToOperands() {
Graph l = graphWith( "x R y" );
Graph r = graphWith( "x R y" );
Difference diff = new Difference( l, r );
assertIsomorphic(graphWith( "" ), diff);
r.delete( triple( "x R y" ) );
assertIsomorphic( graphWith( "x R y" ), diff );
l.add( triple( "x R z" ) );
assertIsomorphic( graphWith( "x R y; x R z" ), diff );
r.add( triple( "x R z" ) );
assertIsomorphic( graphWith( "x R y" ), diff );
}
public void testAdd() {
Graph l = graphWith( "x R y" );
Graph r = graphWith( "x R y; x R z" );
Difference diff = new Difference( l, r );
assertIsomorphic( graphWith( "" ), diff );
// case 1: add to the left operand
diff.add( triple( "p S q" ) );
assertIsomorphic( graphWith( "p S q" ), diff );
assertIsomorphic( graphWith( "x R y; p S q" ), l );
assertIsomorphic( graphWith( "x R y; x R z" ), r );
// case 2: remove from the right, and add to the left operand
diff.add( triple( "x R z" ) );
assertIsomorphic( graphWith( "x R z; p S q" ), diff );
assertIsomorphic( graphWith( "x R y; x R z; p S q" ), l );
assertIsomorphic( graphWith( "x R y" ), r );
// case 3: remove from the right operand
diff.add( triple( "x R y" ) );
assertIsomorphic( graphWith( "x R y; x R z; p S q" ), diff );
assertIsomorphic( graphWith( "x R y; x R z; p S q" ), l );
assertIsomorphic( graphWith( "" ), r );
}
public void testDelete() {
Graph l = graphWith( "x R y; x R z" );
Graph r = graphWith( "x R y" );
Difference diff = new Difference( l, r );
assertIsomorphic( graphWith( "x R z" ), diff );
// case 1: remove non-existent triple is a no-op
diff.delete( triple( "p S q" ) );
assertIsomorphic( graphWith( "x R z" ), diff );
assertIsomorphic( graphWith( "x R y; x R z" ), l );
assertIsomorphic( graphWith( "x R y" ), r );
// case 2: remove triple that exists in both - removes from left
diff.delete( triple( "x R y" ) );
assertIsomorphic( graphWith( "x R z" ), diff );
assertIsomorphic( graphWith( "x R z" ), l );
assertIsomorphic( graphWith( "x R y" ), r );
// case 3: remove triple that exists in left is removed
diff.delete( triple( "x R z" ) );
assertIsomorphic( graphWith( "" ), diff );
assertIsomorphic( graphWith( "" ), l );
assertIsomorphic( graphWith( "x R y" ), r );
}
}