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package jcgp.backend.modules.problem;
import java.util.List;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import jcgp.backend.resources.Resources;
import jcgp.backend.resources.parameters.DoubleParameter;
import jcgp.backend.resources.parameters.Parameter;
/**
*
* This fitness function module implements a simple test case evaluator.
*
* A TestCase object is a
*
*
* @author Eduardo Pedroni
*
*/
public abstract class TestCaseProblem<U extends Object> extends Problem {
public static class TestCase<T> {
private T[] inputs;
private T[] outputs;
public TestCase(T[] inputs, T[] outputs) {
this.inputs = inputs;
this.outputs = outputs;
}
public T getInput(int index) {
return inputs[index];
}
public T getOutput(int index) {
return outputs[index];
}
public T[] getInputs() {
return inputs;
}
public T[] getOutputs() {
return outputs;
}
}
protected ObservableList<TestCase<U>> testCases;
protected DoubleParameter maxFitness;
protected Resources resources;
public TestCaseProblem(Resources resources) {
super();
this.resources = resources;
maxFitness = new DoubleParameter(0, "Max fitness", true, false) {
@Override
public void validate(Number newValue) {
// blank
}
};
testCases = FXCollections.observableArrayList();
}
@Override
public Parameter<?>[] getLocalParameters() {
return new Parameter[]{maxFitness};
}
protected double getMaxFitness() {
int fitness = 0;
for (TestCase<U> tc : testCases) {
fitness += tc.getOutputs().length;
}
return fitness;
}
public void setTestCases(List<TestCase<U>> testCases) {
this.testCases.clear();
this.testCases.addAll(testCases);
maxFitness.set(getMaxFitness());
}
public ObservableList<TestCase<U>> getTestCases() {
return testCases;
}
public abstract void addTestCase(String[] inputs, String[] outputs);
protected final void addTestCase(TestCase<U> testCase) {
if (testCase.getInputs().length != resources.inputs()) {
throw new IllegalArgumentException("Received test case with " + testCase.getInputs().length +
" inputs but need exactly " + resources.inputs());
} else if (testCase.getOutputs().length != resources.outputs()) {
throw new IllegalArgumentException("Received test case with " + testCase.getOutputs().length +
" outputs but need exactly " + resources.outputs());
} else {
this.testCases.add(testCase);
maxFitness.set(getMaxFitness());
}
}
public int getInputCount() {
return resources.inputs();
}
public int getOutputCount() {
return resources.outputs();
}
public void clearTestCases() {
testCases.clear();
}
public abstract String getFileExtension();
}
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