/*
* Copyright 2011 Henry Coles
*
* Licensed 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.pitest.mutationtest.filter;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertSame;
import static org.pitest.mutationtest.LocationMother.aMutationId;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.junit.Before;
import org.junit.Test;
import org.pitest.mutationtest.engine.MutationDetails;
import org.pitest.mutationtest.engine.MutationIdentifier;
public class LimitNumberOfMutationPerClassFilterTest {
private LimitNumberOfMutationPerClassFilter testee;
@Before
public void setUp() {
this.testee = new LimitNumberOfMutationPerClassFilter(3);
}
@Test
public void shouldReturnUnalteredCollectionIfCollectionContainsLessThenMaxMutations() {
final Collection<MutationDetails> expected = make(1, 2);
assertSame(expected, this.testee.filter(expected));
}
@Test
public void shouldReturnUnalteredCollectionIfCollectionContainsExactlyMaxMutations() {
final Collection<MutationDetails> expected = make(1, 2, 3);
assertSame(expected, this.testee.filter(expected));
}
@Test
public void shouldTrimCollectionToMaximumAllowedNumber() {
final Collection<MutationDetails> input = make(1, 2, 3, 4);
assertEquals(make(1, 2, 3), this.testee.filter(input));
}
@Test
public void shouldUseEvenDistributionOfMutations() {
final Collection<MutationDetails> input = make(1, 2, 3, 4, 5, 6, 7, 8);
assertEquals(make(2, 4, 6), this.testee.filter(input));
}
private Collection<MutationDetails> make(final Integer... ids) {
final List<MutationDetails> ms = new ArrayList<MutationDetails>();
for (final int each : ids) {
ms.add(makeMutation(each));
}
return ms;
}
private MutationDetails makeMutation(final int id) {
return new MutationDetails(makeId(id), "", "", 0, 0);
}
private MutationIdentifier makeId(final int id) {
return aMutationId().withIndex(id).build();
}
}