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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/*
* @test
* @bug 6473768
* @summary Tests of BigDecimal.compareTo
* @author Joseph D. Darcy
*/
import java.math.*;
import static java.math.BigDecimal.*;
public class CompareToTests {
private static int compareToTests() {
int failures = 0;
final BigDecimal MINUS_ONE = BigDecimal.ONE.negate();
// First operand, second operand, expected compareTo result
BigDecimal [][] testCases = {
// Basics
{valueOf(0), valueOf(0), ZERO},
{valueOf(0), valueOf(1), MINUS_ONE},
{valueOf(1), valueOf(2), MINUS_ONE},
{valueOf(2), valueOf(1), ONE},
{valueOf(10), valueOf(10), ZERO},
// Significands would compare differently than scaled value
{valueOf(2,1), valueOf(2), MINUS_ONE},
{valueOf(2,-1), valueOf(2), ONE},
{valueOf(1,1), valueOf(2), MINUS_ONE},
{valueOf(1,-1), valueOf(2), ONE},
{valueOf(5,-1), valueOf(2), ONE},
// Boundary and near boundary values
{valueOf(Long.MAX_VALUE), valueOf(Long.MAX_VALUE), ZERO},
{valueOf(Long.MAX_VALUE).negate(), valueOf(Long.MAX_VALUE), MINUS_ONE},
{valueOf(Long.MAX_VALUE-1), valueOf(Long.MAX_VALUE), MINUS_ONE},
{valueOf(Long.MAX_VALUE-1).negate(), valueOf(Long.MAX_VALUE), MINUS_ONE},
{valueOf(Long.MIN_VALUE), valueOf(Long.MAX_VALUE), MINUS_ONE},
{valueOf(Long.MIN_VALUE).negate(), valueOf(Long.MAX_VALUE), ONE},
{valueOf(Long.MIN_VALUE+1), valueOf(Long.MAX_VALUE), MINUS_ONE},
{valueOf(Long.MIN_VALUE+1).negate(), valueOf(Long.MAX_VALUE), ZERO},
{valueOf(Long.MAX_VALUE), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MAX_VALUE).negate(), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MAX_VALUE-1), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MAX_VALUE-1).negate(), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MIN_VALUE), valueOf(Long.MIN_VALUE), ZERO},
{valueOf(Long.MIN_VALUE).negate(), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MIN_VALUE+1), valueOf(Long.MIN_VALUE), ONE},
{valueOf(Long.MIN_VALUE+1).negate(), valueOf(Long.MIN_VALUE), ONE},
};
for (BigDecimal[] testCase : testCases) {
BigDecimal a = testCase[0];
BigDecimal a_negate = a.negate();
BigDecimal b = testCase[1];
BigDecimal b_negate = b.negate();
int expected = testCase[2].intValue();
failures += compareToTest(a, b, expected);
failures += compareToTest(a_negate, b_negate, -expected);
}
return failures;
}
private static int compareToTest(BigDecimal a, BigDecimal b, int expected) {
int result = a.compareTo(b);
int failed = (result==expected) ? 0 : 1;
if (failed == 1) {
System.err.println("(" + a + ").compareTo(" + b + ") => " + result +
"\n\tExpected " + expected);
}
return failed;
}
public static void main(String argv[]) {
int failures = 0;
failures += compareToTests();
if (failures > 0) {
throw new RuntimeException("Incurred " + failures +
" failures while testing exact compareTo.");
}
}
}