/*
* Copyright 2013 - 2014 Felix Müller
*
* This file is part of CodeQ Invest.
*
* CodeQ Invest is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* CodeQ Invest is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with CodeQ Invest. If not, see <http://www.gnu.org/licenses/>.
*/
package org.codeqinvest.codechanges;
import org.codeqinvest.codechanges.scm.CodeChurn;
import org.codeqinvest.codechanges.scm.CodeChurnCalculationException;
import org.codeqinvest.codechanges.scm.ScmConnectionEncodingException;
import org.junit.Test;
import java.util.Arrays;
import static org.fest.assertions.Assertions.assertThat;
public class CommitBasedCodeChangeProbabilityCalculatorTest extends AbstractCodeChangeProbabilityCalculatorTest {
@Test
public void codeChurnForOneLastCommit() throws CodeChurnCalculationException, ScmConnectionEncodingException {
fakeCodeChurnCalculator.addCodeChurnWithoutDay("A", new CodeChurn(Arrays.asList(0.8)));
CodeChangeProbabilityCalculator codeChangeProbabilityCalculator = new CommitBasedCodeChangeProbabilityCalculator(codeChurnCalculatorFactory, 1);
assertThat(codeChangeProbabilityCalculator.calculateCodeChangeProbability(dummyConnectionSettings, "A")).isEqualTo(0.8);
}
@Test
public void codeChurnForManyLastCommits() throws CodeChurnCalculationException, ScmConnectionEncodingException {
fakeCodeChurnCalculator.addCodeChurnWithoutDay("A", new CodeChurn(Arrays.asList(0.8)));
fakeCodeChurnCalculator.addCodeChurnWithoutDay("A", new CodeChurn(Arrays.asList(1.0)));
fakeCodeChurnCalculator.addCodeChurnWithoutDay("A", new CodeChurn(Arrays.asList(0.2)));
CodeChangeProbabilityCalculator codeChangeProbabilityCalculator = new CommitBasedCodeChangeProbabilityCalculator(codeChurnCalculatorFactory, 4);
assertThat(codeChangeProbabilityCalculator.calculateCodeChangeProbability(dummyConnectionSettings, "A")).isEqualTo(0.5);
}
@Test
public void maxPossibleProbabilityShouldBeOne() throws CodeChurnCalculationException, ScmConnectionEncodingException {
fakeCodeChurnCalculator.addCodeChurnWithoutDay("A", new CodeChurn(Arrays.asList(10.0)));
CodeChangeProbabilityCalculator codeChangeProbabilityCalculator = new CommitBasedCodeChangeProbabilityCalculator(codeChurnCalculatorFactory, 1);
assertThat(codeChangeProbabilityCalculator.calculateCodeChangeProbability(dummyConnectionSettings, "A")).isEqualTo(1.0);
}
}