--- /dev/null 2015-09-11 11:06:08.592686920 -0400 +++ new/modules/graphics/src/test/java/test/com/sun/javafx/test/ObjectMethodsTestBase.java 2015-09-11 21:24:43.525286775 -0400 @@ -0,0 +1,222 @@ +/* + * Copyright (c) 2011, 2014, Oracle and/or its affiliates. All rights reserved. + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * This code is free software; you can redistribute it and/or modify it + * under the terms of the GNU General Public License version 2 only, as + * published by the Free Software Foundation. Oracle designates this + * particular file as subject to the "Classpath" exception as provided + * by Oracle in the LICENSE file that accompanied this code. + * + * 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. + * + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA + * or visit www.oracle.com if you need additional information or have any + * questions. + */ + +package test.com.sun.javafx.test; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertNotSame; +import static org.junit.Assert.fail; + +import org.junit.Test; + +public abstract class ObjectMethodsTestBase { + private final Configuration configuration; + + public ObjectMethodsTestBase(final Configuration configuration) { + this.configuration = configuration; + } + + @Test + public void testEquals() { + configuration.equalsTest(); + } + + @Test + public void testHashCode() { + configuration.hashCodeTest(); + } + + @Test + public void testToString() { + configuration.toStringTest(); + } + + public static Object[] equalObjects(final Object... objects) { + return config(new Configuration(EQUAL_OBJECTS_EQUALS_TEST, + EQUAL_OBJECTS_HASHCODE_TEST, + EQUAL_OBJECTS_TOSTRING_TEST, + objects)); + } + + public static Object[] differentObjects( + final Object... objects) { + return config(new Configuration(DIFFERENT_OBJECTS_EQUALS_TEST, + DIFFERENT_OBJECTS_HARD_HASHCODE_TEST, + DIFFERENT_OBJECTS_TOSTRING_TEST, + objects)); + } + + public static Object[] differentObjectsEasyHashcode( + final Object... objects) { + return config(new Configuration(DIFFERENT_OBJECTS_EQUALS_TEST, + DIFFERENT_OBJECTS_EASY_HASHCODE_TEST, + DIFFERENT_OBJECTS_TOSTRING_TEST, + objects)); + } + + public static Object[] differentObjectsMediumHashcode( + final Object... objects) { + return config(new Configuration(DIFFERENT_OBJECTS_EQUALS_TEST, + DIFFERENT_OBJECTS_MEDIUM_HASHCODE_TEST, + DIFFERENT_OBJECTS_TOSTRING_TEST, + objects)); + } + + public static Object[] config(final Configuration configuration) { + return new Object[] { configuration }; + } + + public static final class Configuration { + private final Object[] objects; + + private final TestInstance equalsTest; + + private final TestInstance hashCodeTest; + + private final TestInstance toStringTest; + + public Configuration(final TestInstance equalsTest, + final TestInstance hashCodeTest, + final TestInstance toStringTest, + final Object... objects) { + this.equalsTest = equalsTest; + this.hashCodeTest = hashCodeTest; + this.toStringTest = toStringTest; + this.objects = objects; + } + + public void equalsTest() { + if (equalsTest != null) { + equalsTest.test(objects); + } + } + + public void hashCodeTest() { + if (hashCodeTest != null) { + hashCodeTest.test(objects); + } + } + + public void toStringTest() { + if (toStringTest != null) { + toStringTest.test(objects); + } + } + } + + public interface TestInstance { + void test(Object[] objects); + } + + public static final TestInstance EQUAL_OBJECTS_EQUALS_TEST = + objects -> { + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + assertEquals(objects[i], objects[j]); + } + assertFalse(objects[i].equals(null)); + } + }; + + public static final TestInstance EQUAL_OBJECTS_HASHCODE_TEST = + objects -> { + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + assertEquals(objects[i].hashCode(), + objects[j].hashCode()); + } + } + }; + + public static final TestInstance EQUAL_OBJECTS_TOSTRING_TEST = + objects -> { + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + assertEquals(objects[i].toString(), + objects[j].toString()); + } + } + }; + + public static final TestInstance DIFFERENT_OBJECTS_EQUALS_TEST = + objects -> { + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + if (i != j) { + assertFalse(objects[i].equals(objects[j])); + } + } + assertFalse(objects[i].equals(null)); + } + }; + + public static final TestInstance DIFFERENT_OBJECTS_EASY_HASHCODE_TEST = + objects -> { + // if objects are different, their hashcodes can return the + // same or different values + }; + + public static final TestInstance DIFFERENT_OBJECTS_MEDIUM_HASHCODE_TEST = + objects -> { + // we require that at least one tested object returns a + // different hash code value + final int firstHashCodeValue = objects[0].hashCode(); + for (int i = 1; i < objects.length; ++i) { + if (objects[i].hashCode() != firstHashCodeValue) { + return; + } + } + + // all the hash codes are same, this violates our criteria + fail(); + }; + + public static final TestInstance DIFFERENT_OBJECTS_HARD_HASHCODE_TEST = + objects -> { + // we require that at all tested objects returns a different + // hash code value + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + if (i != j) { + assertNotSame(objects[i].hashCode(), + objects[j].hashCode()); + } + } + } + }; + + public static final TestInstance DIFFERENT_OBJECTS_TOSTRING_TEST = + objects -> { + for (int i = 0; i < objects.length; ++i) { + for (int j = 0; j < objects.length; ++j) { + if (i != j) { + assertFalse(objects[i].toString().equals( + objects[j].toString())); + } + } + } + }; +}