// Test of Long method compareTo(Long).

// Copyright 2012 Red Hat, Inc.
// Written by Pavel Tisnovsky <ptisnovs@redhat.com>

// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published 
// by the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation
// Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307 USA

// Tags: JDK1.4
// Tags: CompileOptions: -source 1.4

package gnu.testlet.java.lang.Long;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;

/**
 * Test the method Long.compareTo(Long);
 */
public class compareTo implements Testlet
{
  public static final int LESS = -1;
  public static final int EQUAL = 0;
  public static final int GREATER = 1;
  TestHarness harness;
  void compare(Long l1, Long l2, int expected)
  {
    // the result need not be -1, 0, 1; just <0, 0, >0
    int result = l1.compareTo(l2);
    switch (expected)
      {
      case LESS:
	harness.check(result < 0);
	break;
      case EQUAL:
	harness.check(result == 0);
	break;
      case GREATER:
	harness.check(result > 0);
	break;
      default:
	throw new Error();
      }

    result = l2.compareTo(l1);
    switch (expected)
      {
      case LESS:
	harness.check(result > 0);
	break;
      case EQUAL:
	harness.check(result == 0);
	break;
      case GREATER:
	harness.check(result < 0);
	break;
      default:
	throw new Error();
      }
  }

  /**
   * Entry point to this test.
   */
  public void test(TestHarness harness)
  {
    this.harness = harness;
    Long min = new Long(Long.MIN_VALUE);
    Long negone = new Long(-1);
    Long zero = new Long(0);
    Long posone = new Long(1);
    Long max = new Long(Long.MAX_VALUE);

    harness.checkPoint("compareTo");
    compare(min, min, EQUAL);
    compare(min, negone, LESS);
    compare(min, zero, LESS);
    compare(min, posone, LESS);
    compare(min, max, LESS);

    compare(negone, min, GREATER);
    compare(negone, negone, EQUAL);
    compare(negone, zero, LESS);
    compare(negone, posone, LESS);
    compare(negone, max, LESS);

    compare(zero, min, GREATER);
    compare(zero, negone, GREATER);
    compare(zero, zero, EQUAL);
    compare(zero, posone, LESS);
    compare(zero, max, LESS);

    compare(posone, min, GREATER);
    compare(posone, negone, GREATER);
    compare(posone, zero, GREATER);
    compare(posone, posone, EQUAL);
    compare(posone, max, LESS);

    compare(max, min, GREATER);
    compare(max, negone, GREATER);
    compare(max, zero, GREATER);
    compare(max, posone, GREATER);
    compare(max, max, EQUAL);

    Object o = zero;
    boolean ok;
    harness.check(((Comparable)zero).compareTo(o) == 0);

    ok = false;
    try
      {
	zero.compareTo((Long) null);
      }
    catch (NullPointerException e)
      {
	ok = true;
      }
    harness.check(ok);

    ok = false;
    try
      {
	((Comparable)zero).compareTo((Object) null);
      }
    catch (NullPointerException e)
      {
	ok = true;
      }
    harness.check(ok);

    ok = false;
    try
      {
	((Comparable)zero).compareTo(new Object());
      }
    catch (ClassCastException e)
      {
	ok = true;
      }
    harness.check(ok);
  }
}