117 lines
4.6 KiB
Java
117 lines
4.6 KiB
Java
/*
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* Copyright (c) 2006, 2013, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 6473768
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* @summary Tests of BigDecimal.compareTo
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* @author Joseph D. Darcy
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*/
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import java.math.*;
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import static java.math.BigDecimal.*;
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public class CompareToTests {
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private static int compareToTests() {
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int failures = 0;
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final BigDecimal MINUS_ONE = BigDecimal.ONE.negate();
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// First operand, second operand, expected compareTo result
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BigDecimal [][] testCases = {
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// Basics
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{valueOf(0), valueOf(0), ZERO},
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{valueOf(0), valueOf(1), MINUS_ONE},
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{valueOf(1), valueOf(2), MINUS_ONE},
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{valueOf(2), valueOf(1), ONE},
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{valueOf(10), valueOf(10), ZERO},
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// Significands would compare differently than scaled value
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{valueOf(2,1), valueOf(2), MINUS_ONE},
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{valueOf(2,-1), valueOf(2), ONE},
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{valueOf(1,1), valueOf(2), MINUS_ONE},
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{valueOf(1,-1), valueOf(2), ONE},
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{valueOf(5,-1), valueOf(2), ONE},
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// Boundary and near boundary values
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{valueOf(Long.MAX_VALUE), valueOf(Long.MAX_VALUE), ZERO},
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{valueOf(Long.MAX_VALUE).negate(), valueOf(Long.MAX_VALUE), MINUS_ONE},
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{valueOf(Long.MAX_VALUE-1), valueOf(Long.MAX_VALUE), MINUS_ONE},
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{valueOf(Long.MAX_VALUE-1).negate(), valueOf(Long.MAX_VALUE), MINUS_ONE},
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{valueOf(Long.MIN_VALUE), valueOf(Long.MAX_VALUE), MINUS_ONE},
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{valueOf(Long.MIN_VALUE).negate(), valueOf(Long.MAX_VALUE), ONE},
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{valueOf(Long.MIN_VALUE+1), valueOf(Long.MAX_VALUE), MINUS_ONE},
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{valueOf(Long.MIN_VALUE+1).negate(), valueOf(Long.MAX_VALUE), ZERO},
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{valueOf(Long.MAX_VALUE), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MAX_VALUE).negate(), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MAX_VALUE-1), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MAX_VALUE-1).negate(), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MIN_VALUE), valueOf(Long.MIN_VALUE), ZERO},
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{valueOf(Long.MIN_VALUE).negate(), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MIN_VALUE+1), valueOf(Long.MIN_VALUE), ONE},
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{valueOf(Long.MIN_VALUE+1).negate(), valueOf(Long.MIN_VALUE), ONE},
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};
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for (BigDecimal[] testCase : testCases) {
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BigDecimal a = testCase[0];
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BigDecimal a_negate = a.negate();
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BigDecimal b = testCase[1];
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BigDecimal b_negate = b.negate();
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int expected = testCase[2].intValue();
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failures += compareToTest(a, b, expected);
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failures += compareToTest(a_negate, b_negate, -expected);
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}
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return failures;
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}
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private static int compareToTest(BigDecimal a, BigDecimal b, int expected) {
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int result = a.compareTo(b);
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int failed = (result==expected) ? 0 : 1;
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if (failed == 1) {
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System.err.println("(" + a + ").compareTo(" + b + ") => " + result +
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"\n\tExpected " + expected);
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}
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return failed;
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}
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public static void main(String argv[]) {
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int failures = 0;
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failures += compareToTests();
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if (failures > 0) {
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throw new RuntimeException("Incurred " + failures +
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" failures while testing exact compareTo.");
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}
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}
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}
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