// Tags: JDK1.2
// Copyright (C) 2004 David Gilbert <david.gilbert@object-refinery.com>
// Mauve 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, or (at your option)
// any later version.
// Mauve 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 Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA. */
package gnu.testlet.wonka.lang.Double;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
/**
* Some checks for the valueOf() method in the {@link Double} class.
*/
public class valueOf implements Testlet
{
/**
* Runs the test using the specified harness.
*
* @param harness the test harness (<code>null</code> not permitted).
*/
public void test(TestHarness harness)
{
testRegular(harness);
testInfinities(harness);
testNaN(harness);
}
/**
* Tests some regular values.
*
* @param harness the test harness.
*/
public void testRegular(TestHarness harness)
{
harness.check(Double.valueOf("1.0"), new Double(1.0));
harness.check(Double.valueOf("+1.0"), new Double(1.0));
harness.check(Double.valueOf("-1.0"), new Double(-1.0));
harness.check(Double.valueOf(" 1.0 "), new Double(1.0));
harness.check(Double.valueOf(" -1.0 "), new Double(-1.0));
harness.check(Double.valueOf("2."), new Double(2.0));
harness.check(Double.valueOf(".3"), new Double(0.3));
harness.check(Double.valueOf("1e-9"), new Double(1e-9));
harness.check(Double.valueOf("1e137"), new Double(1e137));
// test some bad formats
try
{
/* Double d = */ Double.valueOf("");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* Double d = */ Double.valueOf("X");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* Double d = */ Double.valueOf("e");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* Double d = */ Double.valueOf("+ 1.0");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* Double d = */ Double.valueOf("- 1.0");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
// null argument should throw NullPointerException
try
{
/* Double d = */ Double.valueOf(null);
harness.check(false);
}
catch (NullPointerException e)
{
harness.check(true);
}
}
/**
* Some checks for values that should parse to Double.POSITIVE_INFINITY
* or Double.NEGATIVE_INFINITY.
*
* @param harness the test harness.
*/
public void testInfinities(TestHarness harness)
{
try
{
harness.check(Double.valueOf("Infinity"), new Double(Double.POSITIVE_INFINITY));
harness.check(Double.valueOf("+Infinity"), new Double(Double.POSITIVE_INFINITY));
harness.check(Double.valueOf("-Infinity"), new Double(Double.NEGATIVE_INFINITY));
harness.check(Double.valueOf(" +Infinity "), new Double(Double.POSITIVE_INFINITY));
harness.check(Double.valueOf(" -Infinity "), new Double(Double.NEGATIVE_INFINITY));
}
catch (Exception e)
{
harness.check(false);
harness.debug(e);
}
harness.check(Double.valueOf("1e1000"), new Double(Double.POSITIVE_INFINITY));
harness.check(Double.valueOf("-1e1000"), new Double(Double.NEGATIVE_INFINITY));
}
/**
* Some checks for 'NaN' values.
*
* @param harness the test harness.
*/
public void testNaN(TestHarness harness)
{
try
{
harness.check(Double.isNaN(Double.valueOf("NaN").doubleValue()));
harness.check(Double.isNaN(Double.valueOf("+NaN").doubleValue()));
harness.check(Double.isNaN(Double.valueOf("-NaN").doubleValue()));
harness.check(Double.isNaN(Double.valueOf(" +NaN ").doubleValue()));
harness.check(Double.isNaN(Double.valueOf(" -NaN ").doubleValue()));
}
catch (Exception e)
{
harness.check(false);
harness.debug(e);
}
}
}