/**
 * Copyright (C) 2009 - present by OpenGamma Inc. and the OpenGamma group of companies
 *
 * Please see distribution for license.
 */
package com.opengamma.analytics.math.integration;

import org.testng.annotations.Test;

import com.opengamma.analytics.math.function.Function1D;
import com.opengamma.util.test.TestGroup;

/**
 * Test.
 */
@Test(groups = TestGroup.UNIT)
public class Integrator1DTest {
  private static final Integrator1D<Double, Double> INTEGRATOR = new Integrator1D<Double, Double>() {

    @Override
    public Double integrate(final Function1D<Double, Double> f, final Double lower, final Double upper) {
      return 0.;
    }

  };
  private static final Function1D<Double, Double> F = new Function1D<Double, Double>() {

    @Override
    public Double evaluate(final Double x) {
      return 0.;
    }

  };
  private static final Double[] L = new Double[] {1.3};
  private static final Double[] U = new Double[] {3.4};

  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testNullFunction() {
    INTEGRATOR.integrate(null, L, U);
  }
  
  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testNullLowerBound() {
    INTEGRATOR.integrate(F, null, U);
  }
  
  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testNullUpperBound() {
    INTEGRATOR.integrate(F, L, null);
  }  
  
  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testEmptyLowerBound() {
    INTEGRATOR.integrate(F, new Double[0], U);
  }  

  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testEmptyUpperBound() {
    INTEGRATOR.integrate(F, L, new Double[0]);
  }  

  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testNullLowerBoundValue() {
    INTEGRATOR.integrate(F, new Double[] {null}, U);
  }  

  @Test(expectedExceptions = IllegalArgumentException.class)
  public void testNullUpperBoundValue() {
    INTEGRATOR.integrate(F, L, new Double[] {null});
  }  
}