// 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 parseDouble() method in the {@link Double} class.
*/
public class parseDouble 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.parseDouble("1.0"), 1.0);
harness.check(Double.parseDouble("+1.0"), 1.0);
harness.check(Double.parseDouble("-1.0"), -1.0);
harness.check(Double.parseDouble(" 1.0 "), 1.0);
harness.check(Double.parseDouble(" -1.0 "), -1.0);
harness.check(Double.parseDouble("2."), 2.0);
harness.check(Double.parseDouble(".3"), 0.3);
harness.check(Double.parseDouble("1e-9"), 1e-9);
harness.check(Double.parseDouble("1e137"), 1e137);
// test some bad formats
try
{
/* double d = */ Double.parseDouble("");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* double d = */ Double.parseDouble("X");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* double d = */ Double.parseDouble("e");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* double d = */ Double.parseDouble("+ 1.0");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
try
{
/* double d = */ Double.parseDouble("- 1.0");
harness.check(false);
}
catch (NumberFormatException e)
{
harness.check(true);
}
// null argument should throw NullPointerException
try
{
/* double d = */ Double.parseDouble(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.parseDouble("Infinity"), Double.POSITIVE_INFINITY);
harness.check(Double.parseDouble("+Infinity"), Double.POSITIVE_INFINITY);
harness.check(Double.parseDouble("-Infinity"), Double.NEGATIVE_INFINITY);
harness.check(Double.parseDouble(" +Infinity "), Double.POSITIVE_INFINITY);
harness.check(Double.parseDouble(" -Infinity "), Double.NEGATIVE_INFINITY);
}
catch (Exception e)
{
harness.check(false);
harness.debug(e);
}
harness.check(Double.parseDouble("1e1000"), Double.POSITIVE_INFINITY);
harness.check(Double.parseDouble("-1e1000"), Double.NEGATIVE_INFINITY);
}
/**
* Some checks for 'NaN' values.
*
* @param harness the test harness.
*/
public void testNaN(TestHarness harness)
{
try
{
harness.check(Double.isNaN(Double.parseDouble("NaN")));
harness.check(Double.isNaN(Double.parseDouble("+NaN")));
harness.check(Double.isNaN(Double.parseDouble("-NaN")));
harness.check(Double.isNaN(Double.parseDouble(" +NaN ")));
harness.check(Double.isNaN(Double.parseDouble(" -NaN ")));
}
catch (Exception e)
{
harness.check(false);
harness.debug(e);
}
}
}