/*
* (c) Copyright 2006-2011 by Volker Bergmann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, is permitted under the terms of the
* GNU General Public License.
*
* For redistributing this software or a derivative work under a license other
* than the GPL-compatible Free Software License as defined by the Free
* Software Foundation or approved by OSI, you must first obtain a commercial
* license to this software product from Volker Bergmann.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* WITHOUT A WARRANTY OF ANY KIND. ALL EXPRESS OR IMPLIED CONDITIONS,
* REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE
* HEREBY EXCLUDED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
package org.databene.benerator.wrapper;
import org.databene.benerator.distribution.sequence.RandomIntegerGenerator;
import org.databene.benerator.sample.ConstantGenerator;
import org.databene.benerator.sample.SequenceGenerator;
import org.databene.benerator.test.GeneratorTest;
import org.databene.benerator.util.GeneratorUtil;
import org.databene.benerator.Generator;
import org.junit.Test;
import static junit.framework.Assert.*;
/**
* Tests the {@link AlternativeGenerator}.<br/>
* <br/>
* Created: 11.10.2006 23:10:34
* @since 0.1
* @author Volker Bergmann
*/
public class AlternativeGeneratorTest extends GeneratorTest {
@Test
@SuppressWarnings("unchecked")
public void testNonUnique() {
Generator<Integer> source1 = new RandomIntegerGenerator(-2, -1);
Generator<Integer> source2 = new RandomIntegerGenerator(1, 2);
AlternativeGenerator<Integer> generator = new AlternativeGenerator<Integer>(Integer.class, source1, source2);
generator.init(context);
for (int i = 0; i < 100; i++) {
int product = GeneratorUtil.generateNonNull(generator);
assertTrue((-2 <= product && product <= -1) || (1 <= product && product <= 2));
}
}
@Test
public void testUniqueOneShotAlternatives() {
expectUniquelyGeneratedSet(initialize(generator(0)), 0).withCeasedAvailability();
expectUniquelyGeneratedSet(initialize(generator(0, 1, 2)), 0, 1, 2).withCeasedAvailability();
}
@Test
@SuppressWarnings("unchecked")
public void testUniqueMultiAlternatives() {
Generator<Integer>[] gens = new Generator[2];
gens[0] = new NShotGeneratorProxy<Integer>(new ConstantGenerator<Integer>(2), 1);
gens[1] = generator(0, 1);
Generator<Integer> generator = new AlternativeGenerator<Integer>(Integer.class, gens);
generator.init(context);
expectUniquelyGeneratedSet(generator, 0, 1, 2).withCeasedAvailability();
}
@Test
@SuppressWarnings("unchecked")
public void testUniqueManyAlternatives() {
Generator<Integer>[] gens = new Generator[2];
gens[0] = new SequenceGenerator<Integer>(Integer.class, 0, 2, 4, 6, 8);
gens[1] = new SequenceGenerator<Integer>(Integer.class, 1, 3, 5, 7, 9);
Generator<Integer> generator = new AlternativeGenerator<Integer>(Integer.class, gens);
generator.init(context);
expectUniqueGenerations(generator, 10).withCeasedAvailability();
}
// helpers ---------------------------------------------------------------------------------------------------------
@SuppressWarnings("unchecked")
private Generator<Integer> generator(int ... values) {
Generator<Integer>[] gens = new Generator[values.length];
for (int i = 0; i < values.length; i++)
gens[i] = new NShotGeneratorProxy<Integer>(new ConstantGenerator<Integer>(values[i]), 1);
AlternativeGenerator<Integer> result = new AlternativeGenerator<Integer>(Integer.class, gens);
return result;
}
}