/**
* Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
*
* Please see distribution for license.
*/
package com.opengamma.analytics.financial.var.parametric;
import static org.testng.AssertJUnit.assertEquals;
import static org.testng.AssertJUnit.assertFalse;
import java.util.HashMap;
import java.util.Map;
import org.testng.annotations.Test;
import com.opengamma.analytics.math.matrix.ColtMatrixAlgebra;
import com.opengamma.analytics.math.matrix.DoubleMatrix1D;
import com.opengamma.analytics.math.matrix.DoubleMatrix2D;
import com.opengamma.analytics.math.matrix.MatrixAlgebra;
import com.opengamma.util.test.TestGroup;
/**
* Test.
*/
@Test(groups = TestGroup.UNIT)
public class DeltaGammaCovarianceMatrixSkewnessCalculatorTest {
private static final MatrixAlgebra ALGEBRA = new ColtMatrixAlgebra();
private static final DeltaGammaCovarianceMatrixSkewnessCalculator F = new DeltaGammaCovarianceMatrixSkewnessCalculator(ALGEBRA);
private static final DoubleMatrix1D DELTA_VECTOR = new DoubleMatrix1D(new double[] {1, 5});
private static final DoubleMatrix2D GAMMA_MATRIX = new DoubleMatrix2D(new double[][] {new double[] {25, -7.5}, new double[] {-7.5, 125}});
private static final DoubleMatrix2D COVARIANCE_MATRIX = new DoubleMatrix2D(new double[][] {new double[] {0.0036, -0.0006}, new double[] {-0.0006, 0.0016}});
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNullAlgebra() {
new DeltaGammaCovarianceMatrixSkewnessCalculator(null);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testNullData() {
F.evaluate((Map<Integer, ParametricVaRDataBundle>) null);
}
@Test(expectedExceptions = IllegalArgumentException.class)
public void testGammaMatrixSize() {
final ParametricVaRDataBundle deltaData = new ParametricVaRDataBundle(DELTA_VECTOR, COVARIANCE_MATRIX, 1);
final ParametricVaRDataBundle gammaData = new ParametricVaRDataBundle(new DoubleMatrix2D(new double[][] {new double[] {1, 2, 3}, new double[] {4, 5, 6}, new double[] {7, 8, 9}}),
new DoubleMatrix2D(new double[][] {new double[] {1, 2, 3}, new double[] {4, 5, 6}, new double[] {7, 8, 9}}), 2);
final Map<Integer, ParametricVaRDataBundle> m = new HashMap<>();
m.put(1, deltaData);
m.put(2, gammaData);
F.evaluate(m);
}
@Test
public void testEqualsAndHashCode() {
final DeltaGammaCovarianceMatrixSkewnessCalculator f1 = new DeltaGammaCovarianceMatrixSkewnessCalculator(ALGEBRA);
final DeltaGammaCovarianceMatrixSkewnessCalculator f2 = new DeltaGammaCovarianceMatrixSkewnessCalculator(new ColtMatrixAlgebra());
assertEquals(f1, F);
assertEquals(f1.hashCode(), F.hashCode());
assertFalse(f1.equals(f2));
}
@Test
public void testNoGamma() {
final ParametricVaRDataBundle deltaData = new ParametricVaRDataBundle(DELTA_VECTOR, COVARIANCE_MATRIX, 1);
final Map<Integer, ParametricVaRDataBundle> m = new HashMap<>();
m.put(1, deltaData);
assertEquals(F.evaluate(m), 0, 0);
final ParametricVaRDataBundle gammaData = new ParametricVaRDataBundle(new DoubleMatrix2D(new double[0][0]), new DoubleMatrix2D(new double[0][0]), 2);
m.put(2, gammaData);
assertEquals(F.evaluate(m), 0, 0);
}
@Test
public void test() {
final ParametricVaRDataBundle deltaData = new ParametricVaRDataBundle(DELTA_VECTOR, COVARIANCE_MATRIX, 1);
final ParametricVaRDataBundle gammaData = new ParametricVaRDataBundle(GAMMA_MATRIX, COVARIANCE_MATRIX, 1);
final Map<Integer, ParametricVaRDataBundle> m = new HashMap<>();
m.put(1, deltaData);
m.put(2, gammaData);
assertEquals(F.evaluate(m), 1.913, 1e-3);
}
}