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Added the method pair coverage criterion from the EvoSuite tutorial.
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Gregory Gay
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Jun 6, 2016
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109 changes: 109 additions & 0 deletions
109
client/src/main/java/org/evosuite/coverage/methodpair/MethodPairCoverageFactory.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,109 @@ | ||
| /** | ||
| * Factory that assembles a list of pairs of method calls. | ||
| * Part of EvoSuite tutorial. | ||
| * | ||
| * @author Gregory Gay | ||
| * Copyright (C) 2010-2016 Gordon Fraser, Andrea Arcuri and EvoSuite | ||
| * contributors | ||
| * | ||
| * This file is part of EvoSuite. | ||
| * | ||
| * EvoSuite is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Lesser General Public License as published | ||
| * by the Free Software Foundation, either version 3.0 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * EvoSuite 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 | ||
| * Lesser Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public | ||
| * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| package org.evosuite.coverage.methodpair; | ||
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| import java.lang.reflect.Constructor; | ||
| import java.lang.reflect.Method; | ||
| import java.util.ArrayList; | ||
| import java.util.LinkedHashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
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| import org.evosuite.Properties; | ||
| import org.evosuite.setup.TestUsageChecker; | ||
| import org.evosuite.testsuite.AbstractFitnessFactory; | ||
| import org.mockito.asm.Type; | ||
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| public class MethodPairCoverageFactory extends AbstractFitnessFactory<MethodPairTestFitness> { | ||
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| @Override | ||
| public List getCoverageGoals() { | ||
| List<MethodPairTestFitness> goals = new ArrayList<>(); | ||
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| String className = Properties.TARGET_CLASS; | ||
| Class<?> clazz = Properties.getInitializedTargetClass(); | ||
| Set<String> constructors = getUsableConstructors(clazz); | ||
| Set<String> methods = getUsableMethods(clazz); | ||
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| // Pair each constructor with each method and add to goals. | ||
| for(String constructor:constructors){ | ||
| for(String method: methods){ | ||
| goals.add(new MethodPairTestFitness(className, constructor, method)); | ||
| } | ||
| } | ||
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| // Pair each method with each other method and add to goals. | ||
| for(String method1: methods){ | ||
| for(String method2: methods){ | ||
| goals.add(new MethodPairTestFitness(className,method1,method2)); | ||
| } | ||
| } | ||
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| return goals; | ||
| } | ||
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| /** | ||
| * Returns a list of constructors in the correct format (name + descriptor). | ||
| * Uses reflection to get a list of constructors declared by CUT. | ||
| * For each, produces name and descriptor. | ||
| * @param clazz - class under test | ||
| * @return set of constructors | ||
| */ | ||
| protected Set<String> getUsableConstructors(Class<?> clazz){ | ||
| Set<String> constructors = new LinkedHashSet<>(); | ||
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| Constructor<?>[] allConstructors = clazz.getDeclaredConstructors(); | ||
| for(Constructor<?> c: allConstructors){ | ||
| if(TestUsageChecker.canUse(c)){ | ||
| String methodName = "<init>"+Type.getConstructorDescriptor(c); | ||
| constructors.add(methodName); | ||
| } | ||
| } | ||
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| return constructors; | ||
| } | ||
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| /** | ||
| * Returns a list of methods in the correct format (name + descriptor). | ||
| * Uses reflection to get a list of methods declared by CUT. | ||
| * For each, produces name and descriptor. | ||
| * @param clazz - class under test | ||
| * @return set of constructors | ||
| */ | ||
| protected Set<String> getUsableMethods(Class<?> clazz){ | ||
| Set<String> methods = new LinkedHashSet<>(); | ||
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| Method[] allMethods = clazz.getDeclaredMethods(); | ||
| for(Method m: allMethods){ | ||
| if(TestUsageChecker.canUse(m)){ | ||
| String methodName = m.getName()+Type.getMethodDescriptor(m); | ||
| methods.add(methodName); | ||
| } | ||
| } | ||
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| return methods; | ||
| } | ||
| } |
87 changes: 87 additions & 0 deletions
87
client/src/main/java/org/evosuite/coverage/methodpair/MethodPairSuiteFitness.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,87 @@ | ||
| /** | ||
| * New fitness function, based on pairs of method calls. | ||
| * Part of EvoSuite tutorial. | ||
| * | ||
| * @author Gregory Gay | ||
| * Copyright (C) 2010-2016 Gordon Fraser, Andrea Arcuri and EvoSuite | ||
| * contributors | ||
| * | ||
| * This file is part of EvoSuite. | ||
| * | ||
| * EvoSuite is free software: you can redistribute it and/or modify it | ||
| * under the terms of the GNU Lesser General Public License as published | ||
| * by the Free Software Foundation, either version 3.0 of the License, or | ||
| * (at your option) any later version. | ||
| * | ||
| * EvoSuite 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 | ||
| * Lesser Public License for more details. | ||
| * | ||
| * You should have received a copy of the GNU Lesser General Public | ||
| * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>. | ||
| */ | ||
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| package org.evosuite.coverage.methodpair; | ||
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| import java.util.HashSet; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
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| import org.evosuite.testcase.ExecutableChromosome; | ||
| import org.evosuite.testcase.execution.ExecutionResult; | ||
| import org.evosuite.testsuite.AbstractTestSuiteChromosome; | ||
| import org.evosuite.testsuite.TestSuiteFitnessFunction; | ||
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| public class MethodPairSuiteFitness extends TestSuiteFitnessFunction { | ||
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| // Track the method pairs. | ||
| private final Set<MethodPairTestFitness> allMethodPairs = new HashSet<>(); | ||
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| public MethodPairSuiteFitness(){ | ||
| // Get method pairs from the fitness factory. | ||
| allMethodPairs.addAll(new MethodPairCoverageFactory().getCoverageGoals()); | ||
| } | ||
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| @Override | ||
| public double getFitness(AbstractTestSuiteChromosome<? extends ExecutableChromosome> individual) { | ||
| double fitness = 0.0; | ||
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| // Run all tests and gather the execution results. | ||
| List<ExecutionResult> results = runTestSuite(individual); | ||
| Set<MethodPairTestFitness> coveredMethodPairs = new HashSet<>(); | ||
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| // Go through and look for covered goals. | ||
| for(MethodPairTestFitness goal: allMethodPairs){ | ||
| for(ExecutionResult result: results){ | ||
| if(goal.isCovered(result)){ | ||
| coveredMethodPairs.add(goal); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
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| // Fitness is the total number of goals - the number of covered goals. | ||
| // If all goals are covered, fitness will be 0. | ||
| fitness = allMethodPairs.size() - coveredMethodPairs.size(); | ||
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| // Penalize fitness if the test suite times out. | ||
| for (ExecutionResult result : results) { | ||
| if (result.hasTimeout() || result.hasTestException()) { | ||
| fitness = allMethodPairs.size(); | ||
| break; | ||
| } | ||
| } | ||
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| // Update the fitness score for the suite. | ||
| updateIndividual(this, individual, fitness); | ||
| individual.setNumOfCoveredGoals(this, coveredMethodPairs.size()); | ||
| if(!allMethodPairs.isEmpty()){ | ||
| individual.setCoverage(this, (double) coveredMethodPairs.size() / (double) allMethodPairs.size()); | ||
| }else{ | ||
| individual.setCoverage(this, 1.0); | ||
| } | ||
| return fitness; | ||
| } | ||
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| } |
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