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Fixing "method-no-exception" at test case level
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@apanichella
apanichella committed Dec 12, 2017
1 parent 29b9522 commit c3351b1
Showing 1 changed file with 157 additions and 139 deletions.
296 changes: 157 additions & 139 deletions client/src/main/java/org/evosuite/coverage/method/MethodNoExceptionCoverageTestFitness.java
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Original file line number Diff line number Diff line change
Expand Up @@ -19,157 +19,175 @@
*/
package org.evosuite.coverage.method;

import org.evosuite.Properties;
import org.evosuite.testcase.*;
import org.evosuite.testcase.execution.ExecutionResult;
import org.evosuite.testcase.statements.ConstructorStatement;
import org.evosuite.testcase.statements.EntityWithParametersStatement;
import org.evosuite.testcase.statements.MethodStatement;
import org.evosuite.testcase.statements.Statement;
import org.objectweb.asm.Type;

import java.util.Set;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

/**
* Fitness function for a single test on a single method (no exception)
*
* @author Gordon Fraser, Jose Miguel Rojas
* @author Gordon Fraser, Jose Miguel Rojas, Annibale Panichella
*/
public class MethodNoExceptionCoverageTestFitness extends TestFitnessFunction {

private static final long serialVersionUID = 3624503060256855484L;

/** Target method */
protected final String className;
protected final String methodName;

/**
* Constructor - fitness is specific to a method
* @param className the class name
* @param methodName the method name
* @throws IllegalArgumentException
*/
public MethodNoExceptionCoverageTestFitness(String className, String methodName) throws IllegalArgumentException{
if ((className == null) || (methodName == null)) {
throw new IllegalArgumentException("className and methodName cannot be null");
}
this.className = className;
this.methodName = methodName;
}

/**
* <p>
* getClassName
* </p>
*
* @return a {@link java.lang.String} object.
*/
public String getClassName() {
return className;
}

/**
* <p>
* getMethod
* </p>
*
* @return a {@link java.lang.String} object.
*/
public String getMethod() {
return methodName;
}

/**
* {@inheritDoc}
*
* Calculate fitness
*
* @param individual
* a {@link org.evosuite.testcase.ExecutableChromosome} object.
* @param result
* a {@link org.evosuite.testcase.execution.ExecutionResult} object.
* @return a double.
*/
@Override
public double getFitness(TestChromosome individual, ExecutionResult result) {
double fitness = 1.0;

Set<Integer> exceptionPositions = result.getPositionsWhereExceptionsWereThrown();
for (Statement stmt : result.test) {
if(exceptionPositions.contains(stmt.getPosition()))
break;
if ((stmt instanceof MethodStatement || stmt instanceof ConstructorStatement) && ! exceptionPositions.contains(stmt.getPosition())) {
EntityWithParametersStatement ps = (EntityWithParametersStatement)stmt;
String className = ps.getDeclaringClassName();
String methodDesc = ps.getDescriptor();
String methodName = ps.getMethodName() + methodDesc;
if (this.className.equals(className) && this.methodName.equals(methodName)) {
fitness = 0.0;
break;
}
}
}
updateIndividual(this, individual, fitness);
return fitness;
}

/** {@inheritDoc} */
@Override
public String toString() {
return "[METHODNOEX] " + className + "." + methodName;
}

/** {@inheritDoc} */
@Override
public int hashCode() {
int iConst = 13;
return 51 * iConst + className.hashCode() * iConst + methodName.hashCode();
}

/** {@inheritDoc} */
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MethodNoExceptionCoverageTestFitness other = (MethodNoExceptionCoverageTestFitness) obj;
if (!className.equals(other.className)) {
return false;
} else if (! methodName.equals(other.methodName))
return false;
return true;
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#compareTo(org.evosuite.testcase.TestFitnessFunction)
*/
@Override
public int compareTo(TestFitnessFunction other) {
if (other instanceof MethodNoExceptionCoverageTestFitness) {
MethodNoExceptionCoverageTestFitness otherMethodFitness = (MethodNoExceptionCoverageTestFitness) other;
if (className.equals(otherMethodFitness.getClassName()))
return methodName.compareTo(otherMethodFitness.getMethod());
else
return className.compareTo(otherMethodFitness.getClassName());
}
return compareClassName(other);
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#getTargetClass()
*/
@Override
public String getTargetClass() {
return getClassName();
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#getTargetMethod()
*/
@Override
public String getTargetMethod() {
return getMethod();
}
private static final long serialVersionUID = 3624503060256855484L;

/** Target method */
protected final String className;
protected final String methodName;

/**
* Constructor - fitness is specific to a method
* @param className the class name
* @param methodName the method name
* @throws IllegalArgumentException
*/
public MethodNoExceptionCoverageTestFitness(String className, String methodName) throws IllegalArgumentException{
if ((className == null) || (methodName == null)) {
throw new IllegalArgumentException("className and methodName cannot be null");
}
this.className = className;
this.methodName = methodName;
}

/**
* <p>
* getClassName
* </p>
*
* @return a {@link java.lang.String} object.
*/
public String getClassName() {
return className;
}

/**
* <p>
* getMethod
* </p>
*
* @return a {@link java.lang.String} object.
*/
public String getMethod() {
return methodName;
}

/**
* {@inheritDoc}
*
* Calculate fitness
*
* @param individual
* a {@link org.evosuite.testcase.ExecutableChromosome} object.
* @param result
* a {@link org.evosuite.testcase.execution.ExecutionResult} object.
* @return a double.
*/
@Override
public double getFitness(TestChromosome individual, ExecutionResult result) {
double fitness = 1.0;

List<Integer> exceptionPositions = new ArrayList<Integer>();
if (Properties.BREAK_ON_EXCEPTION) {
// we consider only the first thrown exception
if (!result.getPositionsWhereExceptionsWereThrown().isEmpty()){
int firstPosition = Collections.min(result.getPositionsWhereExceptionsWereThrown());
exceptionPositions.add(firstPosition);
}
} else {
// we consider all thrown exceptions (if any)
exceptionPositions.addAll(result.getPositionsWhereExceptionsWereThrown());
}

for (Statement stmt : result.test) {
if(exceptionPositions.contains(stmt.getPosition())){
if (Properties.BREAK_ON_EXCEPTION)
break; // if we look at the first exception, then no need to iterate over the remaining statements
else
continue; // otherwise we simple skip statements throwing an exception
}
if ((stmt instanceof MethodStatement || stmt instanceof ConstructorStatement)) {
EntityWithParametersStatement ps = (EntityWithParametersStatement)stmt;
String className = ps.getDeclaringClassName();
String methodDesc = ps.getDescriptor();
String methodName = ps.getMethodName() + methodDesc;
if (this.className.equals(className) && this.methodName.equals(methodName)) {
fitness = 0.0;
break;
}
}
}
updateIndividual(this, individual, fitness);
return fitness;
}

/** {@inheritDoc} */
@Override
public String toString() {
return "[METHODNOEX] " + className + "." + methodName;
}

/** {@inheritDoc} */
@Override
public int hashCode() {
int iConst = 13;
return 51 * iConst + className.hashCode() * iConst + methodName.hashCode();
}

/** {@inheritDoc} */
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
MethodNoExceptionCoverageTestFitness other = (MethodNoExceptionCoverageTestFitness) obj;
if (!className.equals(other.className)) {
return false;
} else if (! methodName.equals(other.methodName))
return false;
return true;
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#compareTo(org.evosuite.testcase.TestFitnessFunction)
*/
@Override
public int compareTo(TestFitnessFunction other) {
if (other instanceof MethodNoExceptionCoverageTestFitness) {
MethodNoExceptionCoverageTestFitness otherMethodFitness = (MethodNoExceptionCoverageTestFitness) other;
if (className.equals(otherMethodFitness.getClassName()))
return methodName.compareTo(otherMethodFitness.getMethod());
else
return className.compareTo(otherMethodFitness.getClassName());
}
return compareClassName(other);
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#getTargetClass()
*/
@Override
public String getTargetClass() {
return getClassName();
}

/* (non-Javadoc)
* @see org.evosuite.testcase.TestFitnessFunction#getTargetMethod()
*/
@Override
public String getTargetMethod() {
return getMethod();
}

}

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