106 lines
3.6 KiB
Java
106 lines
3.6 KiB
Java
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/*
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* Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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/*
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* @test
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* @bug 6797535
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* @summary Basic tests for methods in java.util.Objects
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* @author Joseph D. Darcy
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*/
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import java.util.*;
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public class BasicObjectsTest {
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public static void main(String... args) {
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int errors = 0;
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errors += testEquals();
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errors += testHashCode();
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errors += testToString();
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errors += testCompare();
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if (errors > 0 )
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throw new RuntimeException();
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}
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private static int testEquals() {
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int errors = 0;
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Object[] values = {null, "42", 42};
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for(int i = 0; i < values.length; i++)
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for(int j = 0; j < values.length; j++) {
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boolean expected = (i == j);
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Object a = values[i];
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Object b = values[j];
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boolean result = Objects.equals(a, b);
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if (result != expected) {
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errors++;
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System.err.printf("When equating %s to %s, got %b instead of %b%n.",
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a, b, result, expected);
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}
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}
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return errors;
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}
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private static int testHashCode() {
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int errors = 0;
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errors += (Objects.hashCode(null) == 0 ) ? 0 : 1;
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String s = "42";
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errors += (Objects.hashCode(s) == s.hashCode() ) ? 0 : 1;
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return errors;
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}
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private static int testToString() {
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int errors = 0;
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errors += ("null".equals(Objects.toString(null)) ) ? 0 : 1;
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String s = "Some string";
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errors += (s.equals(Objects.toString(s)) ) ? 0 : 1;
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return errors;
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}
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private static int testCompare() {
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int errors = 0;
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String[] values = {"e. e. cummings", "zzz"};
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String[] VALUES = {"E. E. Cummings", "ZZZ"};
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errors += compareTest(null, null, 0);
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for(int i = 0; i < values.length; i++) {
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String a = values[i];
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errors += compareTest(a, a, 0);
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for(int j = 0; j < VALUES.length; j++) {
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int expected = Integer.compare(i, j);
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String b = VALUES[j];
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errors += compareTest(a, b, expected);
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}
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}
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return errors;
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}
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private static int compareTest(String a, String b, int expected) {
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int errors = 0;
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int result = Objects.compare(a, b, String.CASE_INSENSITIVE_ORDER);
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if (Integer.signum(result) != Integer.signum(expected)) {
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errors++;
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System.err.printf("When comparing %s to %s, got %d instead of %d%n.",
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a, b, result, expected);
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}
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return errors;
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}
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}
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