Java example source code file (EqualsBuilderTest.java)
The EqualsBuilderTest.java Java example source code
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.lang3.builder;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import java.util.Arrays;
import org.junit.Test;
/**
* Unit tests {@link org.apache.commons.lang3.builder.EqualsBuilder}.
*/
public class EqualsBuilderTest {
//-----------------------------------------------------------------------
static class TestObject {
private int a;
public TestObject() {
}
public TestObject(final int a) {
this.a = a;
}
@Override
public boolean equals(final Object o) {
if (o == null) { return false; }
if (o == this) { return true; }
if (o.getClass() != getClass()) {
return false;
}
final TestObject rhs = (TestObject) o;
return a == rhs.a;
}
@Override
public int hashCode() {
return a;
}
public void setA(final int a) {
this.a = a;
}
public int getA() {
return a;
}
}
static class TestSubObject extends TestObject {
private int b;
public TestSubObject() {
super(0);
}
public TestSubObject(final int a, final int b) {
super(a);
this.b = b;
}
@Override
public boolean equals(final Object o) {
if (o == null) { return false; }
if (o == this) { return true; }
if (o.getClass() != getClass()) {
return false;
}
final TestSubObject rhs = (TestSubObject) o;
return super.equals(o) && b == rhs.b;
}
@Override
public int hashCode() {
return b *17 + super.hashCode();
}
public void setB(final int b) {
this.b = b;
}
public int getB() {
return b;
}
}
static class TestEmptySubObject extends TestObject {
public TestEmptySubObject(final int a) {
super(a);
}
}
static class TestTSubObject extends TestObject {
@SuppressWarnings("unused")
private transient int t;
public TestTSubObject(final int a, final int t) {
super(a);
this.t = t;
}
}
static class TestTTSubObject extends TestTSubObject {
@SuppressWarnings("unused")
private transient int tt;
public TestTTSubObject(final int a, final int t, final int tt) {
super(a, t);
this.tt = tt;
}
}
static class TestTTLeafObject extends TestTTSubObject {
@SuppressWarnings("unused")
private final int leafValue;
public TestTTLeafObject(final int a, final int t, final int tt, final int leafValue) {
super(a, t, tt);
this.leafValue = leafValue;
}
}
static class TestTSubObject2 extends TestObject {
private transient int t;
public TestTSubObject2(final int a, final int t) {
super(a);
}
public int getT() {
return t;
}
public void setT(final int t) {
this.t = t;
}
}
@Test
public void testReflectionEquals() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(5);
assertTrue(EqualsBuilder.reflectionEquals(o1, o1));
assertTrue(!EqualsBuilder.reflectionEquals(o1, o2));
o2.setA(4);
assertTrue(EqualsBuilder.reflectionEquals(o1, o2));
assertTrue(!EqualsBuilder.reflectionEquals(o1, this));
assertTrue(!EqualsBuilder.reflectionEquals(o1, null));
assertTrue(!EqualsBuilder.reflectionEquals(null, o2));
assertTrue(EqualsBuilder.reflectionEquals((Object) null, (Object) null));
}
@Test
public void testReflectionHierarchyEquals() {
testReflectionHierarchyEquals(false);
testReflectionHierarchyEquals(true);
// Transients
assertTrue(EqualsBuilder.reflectionEquals(new TestTTLeafObject(1, 2, 3, 4), new TestTTLeafObject(1, 2, 3, 4), true));
assertTrue(EqualsBuilder.reflectionEquals(new TestTTLeafObject(1, 2, 3, 4), new TestTTLeafObject(1, 2, 3, 4), false));
assertTrue(!EqualsBuilder.reflectionEquals(new TestTTLeafObject(1, 0, 0, 4), new TestTTLeafObject(1, 2, 3, 4), true));
assertTrue(!EqualsBuilder.reflectionEquals(new TestTTLeafObject(1, 2, 3, 4), new TestTTLeafObject(1, 2, 3, 0), true));
assertTrue(!EqualsBuilder.reflectionEquals(new TestTTLeafObject(0, 2, 3, 4), new TestTTLeafObject(1, 2, 3, 4), true));
}
private void testReflectionHierarchyEquals(final boolean testTransients) {
final TestObject to1 = new TestObject(4);
final TestObject to1Bis = new TestObject(4);
final TestObject to1Ter = new TestObject(4);
final TestObject to2 = new TestObject(5);
final TestEmptySubObject teso = new TestEmptySubObject(4);
final TestTSubObject ttso = new TestTSubObject(4, 1);
final TestTTSubObject tttso = new TestTTSubObject(4, 1, 2);
final TestTTLeafObject ttlo = new TestTTLeafObject(4, 1, 2, 3);
final TestSubObject tso1 = new TestSubObject(1, 4);
final TestSubObject tso1bis = new TestSubObject(1, 4);
final TestSubObject tso1ter = new TestSubObject(1, 4);
final TestSubObject tso2 = new TestSubObject(2, 5);
testReflectionEqualsEquivalenceRelationship(to1, to1Bis, to1Ter, to2, new TestObject(), testTransients);
testReflectionEqualsEquivalenceRelationship(tso1, tso1bis, tso1ter, tso2, new TestSubObject(), testTransients);
// More sanity checks:
// same values
assertTrue(EqualsBuilder.reflectionEquals(ttlo, ttlo, testTransients));
assertTrue(EqualsBuilder.reflectionEquals(new TestSubObject(1, 10), new TestSubObject(1, 10), testTransients));
// same super values, diff sub values
assertTrue(!EqualsBuilder.reflectionEquals(new TestSubObject(1, 10), new TestSubObject(1, 11), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestSubObject(1, 11), new TestSubObject(1, 10), testTransients));
// diff super values, same sub values
assertTrue(!EqualsBuilder.reflectionEquals(new TestSubObject(0, 10), new TestSubObject(1, 10), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestSubObject(1, 10), new TestSubObject(0, 10), testTransients));
// mix super and sub types: equals
assertTrue(EqualsBuilder.reflectionEquals(to1, teso, testTransients));
assertTrue(EqualsBuilder.reflectionEquals(teso, to1, testTransients));
assertTrue(EqualsBuilder.reflectionEquals(to1, ttso, false)); // Force testTransients = false for this assert
assertTrue(EqualsBuilder.reflectionEquals(ttso, to1, false)); // Force testTransients = false for this assert
assertTrue(EqualsBuilder.reflectionEquals(to1, tttso, false)); // Force testTransients = false for this assert
assertTrue(EqualsBuilder.reflectionEquals(tttso, to1, false)); // Force testTransients = false for this assert
assertTrue(EqualsBuilder.reflectionEquals(ttso, tttso, false)); // Force testTransients = false for this assert
assertTrue(EqualsBuilder.reflectionEquals(tttso, ttso, false)); // Force testTransients = false for this assert
// mix super and sub types: NOT equals
assertTrue(!EqualsBuilder.reflectionEquals(new TestObject(0), new TestEmptySubObject(1), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestEmptySubObject(1), new TestObject(0), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestObject(0), new TestTSubObject(1, 1), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestTSubObject(1, 1), new TestObject(0), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestObject(1), new TestSubObject(0, 10), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(new TestSubObject(0, 10), new TestObject(1), testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(to1, ttlo));
assertTrue(!EqualsBuilder.reflectionEquals(tso1, this));
}
/**
* Equivalence relationship tests inspired by "Effective Java":
* <ul>
* <li>reflection
* <li>symmetry
* <li>transitive
* <li>consistency
* <li>non-null reference
* </ul>
* @param to a TestObject
* @param toBis a TestObject, equal to to and toTer
* @param toTer Left hand side, equal to to and toBis
* @param to2 a different TestObject
* @param oToChange a TestObject that will be changed
* @param testTransients whether to test transient instance variables
*/
private void testReflectionEqualsEquivalenceRelationship(
final TestObject to,
final TestObject toBis,
final TestObject toTer,
final TestObject to2,
final TestObject oToChange,
final boolean testTransients) {
// reflection test
assertTrue(EqualsBuilder.reflectionEquals(to, to, testTransients));
assertTrue(EqualsBuilder.reflectionEquals(to2, to2, testTransients));
// symmetry test
assertTrue(EqualsBuilder.reflectionEquals(to, toBis, testTransients) && EqualsBuilder.reflectionEquals(toBis, to, testTransients));
// transitive test
assertTrue(
EqualsBuilder.reflectionEquals(to, toBis, testTransients)
&& EqualsBuilder.reflectionEquals(toBis, toTer, testTransients)
&& EqualsBuilder.reflectionEquals(to, toTer, testTransients));
// consistency test
oToChange.setA(to.getA());
if (oToChange instanceof TestSubObject) {
((TestSubObject) oToChange).setB(((TestSubObject) to).getB());
}
assertTrue(EqualsBuilder.reflectionEquals(oToChange, to, testTransients));
assertTrue(EqualsBuilder.reflectionEquals(oToChange, to, testTransients));
oToChange.setA(to.getA() + 1);
if (oToChange instanceof TestSubObject) {
((TestSubObject) oToChange).setB(((TestSubObject) to).getB() + 1);
}
assertTrue(!EqualsBuilder.reflectionEquals(oToChange, to, testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(oToChange, to, testTransients));
// non-null reference test
assertTrue(!EqualsBuilder.reflectionEquals(to, null, testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(to2, null, testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(null, to, testTransients));
assertTrue(!EqualsBuilder.reflectionEquals(null, to2, testTransients));
assertTrue(EqualsBuilder.reflectionEquals((Object) null, (Object) null, testTransients));
}
@Test
public void testSuper() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(5);
assertTrue(new EqualsBuilder().appendSuper(true).append(o1, o1).isEquals());
assertFalse(new EqualsBuilder().appendSuper(false).append(o1, o1).isEquals());
assertFalse(new EqualsBuilder().appendSuper(true).append(o1, o2).isEquals());
assertFalse(new EqualsBuilder().appendSuper(false).append(o1, o2).isEquals());
}
@Test
public void testObject() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(5);
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
o2.setA(4);
assertTrue(new EqualsBuilder().append(o1, o2).isEquals());
assertTrue(!new EqualsBuilder().append(o1, this).isEquals());
assertTrue(!new EqualsBuilder().append(o1, null).isEquals());
assertTrue(!new EqualsBuilder().append(null, o2).isEquals());
assertTrue(new EqualsBuilder().append((Object) null, (Object) null).isEquals());
}
@Test
public void testObjectBuild() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(5);
assertEquals(Boolean.TRUE, new EqualsBuilder().append(o1, o1).build());
assertEquals(Boolean.FALSE, new EqualsBuilder().append(o1, o2).build());
o2.setA(4);
assertEquals(Boolean.TRUE, new EqualsBuilder().append(o1, o2).build());
assertEquals(Boolean.FALSE, new EqualsBuilder().append(o1, this).build());
assertEquals(Boolean.FALSE, new EqualsBuilder().append(o1, null).build());
assertEquals(Boolean.FALSE, new EqualsBuilder().append(null, o2).build());
assertEquals(Boolean.TRUE, new EqualsBuilder().append((Object) null, (Object) null).build());
}
@Test
public void testLong() {
final long o1 = 1L;
final long o2 = 2L;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testInt() {
final int o1 = 1;
final int o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testShort() {
final short o1 = 1;
final short o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testChar() {
final char o1 = 1;
final char o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testByte() {
final byte o1 = 1;
final byte o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testDouble() {
final double o1 = 1;
final double o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
assertTrue(!new EqualsBuilder().append(o1, Double.NaN).isEquals());
assertTrue(new EqualsBuilder().append(Double.NaN, Double.NaN).isEquals());
assertTrue(new EqualsBuilder().append(Double.POSITIVE_INFINITY, Double.POSITIVE_INFINITY).isEquals());
}
@Test
public void testFloat() {
final float o1 = 1;
final float o2 = 2;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
assertTrue(!new EqualsBuilder().append(o1, Float.NaN).isEquals());
assertTrue(new EqualsBuilder().append(Float.NaN, Float.NaN).isEquals());
assertTrue(new EqualsBuilder().append(Float.POSITIVE_INFINITY, Float.POSITIVE_INFINITY).isEquals());
}
@Test
public void testAccessors() {
final EqualsBuilder equalsBuilder = new EqualsBuilder();
assertTrue(equalsBuilder.isEquals());
equalsBuilder.setEquals(true);
assertTrue(equalsBuilder.isEquals());
equalsBuilder.setEquals(false);
assertFalse(equalsBuilder.isEquals());
}
@Test
public void testReset() {
final EqualsBuilder equalsBuilder = new EqualsBuilder();
assertTrue(equalsBuilder.isEquals());
equalsBuilder.setEquals(false);
assertFalse(equalsBuilder.isEquals());
equalsBuilder.reset();
assertTrue(equalsBuilder.isEquals());
}
@Test
public void testBoolean() {
final boolean o1 = true;
final boolean o2 = false;
assertTrue(new EqualsBuilder().append(o1, o1).isEquals());
assertTrue(!new EqualsBuilder().append(o1, o2).isEquals());
}
@Test
public void testObjectArray() {
TestObject[] obj1 = new TestObject[3];
obj1[0] = new TestObject(4);
obj1[1] = new TestObject(5);
obj1[2] = null;
TestObject[] obj2 = new TestObject[3];
obj2[0] = new TestObject(4);
obj2[1] = new TestObject(5);
obj2[2] = null;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj2, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1].setA(6);
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1].setA(5);
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[2] = obj1[1];
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[2] = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testLongArray() {
long[] obj1 = new long[2];
obj1[0] = 5L;
obj1[1] = 6L;
long[] obj2 = new long[2];
obj2[0] = 5L;
obj2[1] = 6L;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testIntArray() {
int[] obj1 = new int[2];
obj1[0] = 5;
obj1[1] = 6;
int[] obj2 = new int[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testShortArray() {
short[] obj1 = new short[2];
obj1[0] = 5;
obj1[1] = 6;
short[] obj2 = new short[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testCharArray() {
char[] obj1 = new char[2];
obj1[0] = 5;
obj1[1] = 6;
char[] obj2 = new char[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testByteArray() {
byte[] obj1 = new byte[2];
obj1[0] = 5;
obj1[1] = 6;
byte[] obj2 = new byte[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testDoubleArray() {
double[] obj1 = new double[2];
obj1[0] = 5;
obj1[1] = 6;
double[] obj2 = new double[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testFloatArray() {
float[] obj1 = new float[2];
obj1[0] = 5;
obj1[1] = 6;
float[] obj2 = new float[2];
obj2[0] = 5;
obj2[1] = 6;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testBooleanArray() {
boolean[] obj1 = new boolean[2];
obj1[0] = true;
obj1[1] = false;
boolean[] obj2 = new boolean[2];
obj2[0] = true;
obj2[1] = false;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
obj1[1] = true;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj2 = null;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
obj1 = null;
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testMultiLongArray() {
final long[][] array1 = new long[2][2];
final long[][] array2 = new long[2][2];
for (int i = 0; i < array1.length; ++i) {
for (int j = 0; j < array1[0].length; j++) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiIntArray() {
final int[][] array1 = new int[2][2];
final int[][] array2 = new int[2][2];
for (int i = 0; i < array1.length; ++i) {
for (int j = 0; j < array1[0].length; j++) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiShortArray() {
final short[][] array1 = new short[2][2];
final short[][] array2 = new short[2][2];
for (short i = 0; i < array1.length; ++i) {
for (short j = 0; j < array1[0].length; j++) {
array1[i][j] = i;
array2[i][j] = i;
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiCharArray() {
final char[][] array1 = new char[2][2];
final char[][] array2 = new char[2][2];
for (char i = 0; i < array1.length; ++i) {
for (char j = 0; j < array1[0].length; j++) {
array1[i][j] = i;
array2[i][j] = i;
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiByteArray() {
final byte[][] array1 = new byte[2][2];
final byte[][] array2 = new byte[2][2];
for (byte i = 0; i < array1.length; ++i) {
for (byte j = 0; j < array1[0].length; j++) {
array1[i][j] = i;
array2[i][j] = i;
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiFloatArray() {
final float[][] array1 = new float[2][2];
final float[][] array2 = new float[2][2];
for (int i = 0; i < array1.length; ++i) {
for (int j = 0; j < array1[0].length; j++) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiDoubleArray() {
final double[][] array1 = new double[2][2];
final double[][] array2 = new double[2][2];
for (int i = 0; i < array1.length; ++i) {
for (int j = 0; j < array1[0].length; j++) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMultiBooleanArray() {
final boolean[][] array1 = new boolean[2][2];
final boolean[][] array2 = new boolean[2][2];
for (int i = 0; i < array1.length; ++i) {
for (int j = 0; j < array1[0].length; j++) {
array1[i][j] = i == 1 || j == 1;
array2[i][j] = i == 1 || j == 1;
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = false;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
// compare 1 dim to 2.
final boolean[] array3 = new boolean[]{true, true};
assertFalse(new EqualsBuilder().append(array1, array3).isEquals());
assertFalse(new EqualsBuilder().append(array3, array1).isEquals());
assertFalse(new EqualsBuilder().append(array2, array3).isEquals());
assertFalse(new EqualsBuilder().append(array3, array2).isEquals());
}
@Test
public void testRaggedArray() {
final long array1[][] = new long[2][];
final long array2[][] = new long[2][];
for (int i = 0; i < array1.length; ++i) {
array1[i] = new long[2];
array2[i] = new long[2];
for (int j = 0; j < array1[i].length; ++j) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
array1[1][1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testMixedArray() {
final Object array1[] = new Object[2];
final Object array2[] = new Object[2];
for (int i = 0; i < array1.length; ++i) {
array1[i] = new long[2];
array2[i] = new long[2];
for (int j = 0; j < 2; ++j) {
((long[]) array1[i])[j] = (i + 1) * (j + 1);
((long[]) array2[i])[j] = (i + 1) * (j + 1);
}
}
assertTrue(new EqualsBuilder().append(array1, array1).isEquals());
assertTrue(new EqualsBuilder().append(array1, array2).isEquals());
((long[]) array1[1])[1] = 0;
assertTrue(!new EqualsBuilder().append(array1, array2).isEquals());
}
@Test
public void testObjectArrayHiddenByObject() {
final TestObject[] array1 = new TestObject[2];
array1[0] = new TestObject(4);
array1[1] = new TestObject(5);
final TestObject[] array2 = new TestObject[2];
array2[0] = new TestObject(4);
array2[1] = new TestObject(5);
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1].setA(6);
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testLongArrayHiddenByObject() {
final long[] array1 = new long[2];
array1[0] = 5L;
array1[1] = 6L;
final long[] array2 = new long[2];
array2[0] = 5L;
array2[1] = 6L;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testIntArrayHiddenByObject() {
final int[] array1 = new int[2];
array1[0] = 5;
array1[1] = 6;
final int[] array2 = new int[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testShortArrayHiddenByObject() {
final short[] array1 = new short[2];
array1[0] = 5;
array1[1] = 6;
final short[] array2 = new short[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testCharArrayHiddenByObject() {
final char[] array1 = new char[2];
array1[0] = 5;
array1[1] = 6;
final char[] array2 = new char[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testByteArrayHiddenByObject() {
final byte[] array1 = new byte[2];
array1[0] = 5;
array1[1] = 6;
final byte[] array2 = new byte[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testDoubleArrayHiddenByObject() {
final double[] array1 = new double[2];
array1[0] = 5;
array1[1] = 6;
final double[] array2 = new double[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testFloatArrayHiddenByObject() {
final float[] array1 = new float[2];
array1[0] = 5;
array1[1] = 6;
final float[] array2 = new float[2];
array2[0] = 5;
array2[1] = 6;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = 7;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
@Test
public void testBooleanArrayHiddenByObject() {
final boolean[] array1 = new boolean[2];
array1[0] = true;
array1[1] = false;
final boolean[] array2 = new boolean[2];
array2[0] = true;
array2[1] = false;
final Object obj1 = array1;
final Object obj2 = array2;
assertTrue(new EqualsBuilder().append(obj1, obj1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array1).isEquals());
assertTrue(new EqualsBuilder().append(obj1, obj2).isEquals());
assertTrue(new EqualsBuilder().append(obj1, array2).isEquals());
array1[1] = true;
assertTrue(!new EqualsBuilder().append(obj1, obj2).isEquals());
}
public static class TestACanEqualB {
private final int a;
public TestACanEqualB(final int a) {
this.a = a;
}
@Override
public boolean equals(final Object o) {
if (o == this) {
return true;
}
if (o instanceof TestACanEqualB) {
return this.a == ((TestACanEqualB) o).getA();
}
if (o instanceof TestBCanEqualA) {
return this.a == ((TestBCanEqualA) o).getB();
}
return false;
}
@Override
public int hashCode() {
return a;
}
public int getA() {
return this.a;
}
}
public static class TestBCanEqualA {
private final int b;
public TestBCanEqualA(final int b) {
this.b = b;
}
@Override
public boolean equals(final Object o) {
if (o == this) {
return true;
}
if (o instanceof TestACanEqualB) {
return this.b == ((TestACanEqualB) o).getA();
}
if (o instanceof TestBCanEqualA) {
return this.b == ((TestBCanEqualA) o).getB();
}
return false;
}
@Override
public int hashCode() {
return b;
}
public int getB() {
return this.b;
}
}
/**
* Tests two instances of classes that can be equal and that are not "related". The two classes are not subclasses
* of each other and do not share a parent aside from Object.
* See http://issues.apache.org/bugzilla/show_bug.cgi?id=33069
*/
@Test
public void testUnrelatedClasses() {
final Object[] x = new Object[]{new TestACanEqualB(1)};
final Object[] y = new Object[]{new TestBCanEqualA(1)};
// sanity checks:
assertTrue(Arrays.equals(x, x));
assertTrue(Arrays.equals(y, y));
assertTrue(Arrays.equals(x, y));
assertTrue(Arrays.equals(y, x));
// real tests:
assertTrue(x[0].equals(x[0]));
assertTrue(y[0].equals(y[0]));
assertTrue(x[0].equals(y[0]));
assertTrue(y[0].equals(x[0]));
assertTrue(new EqualsBuilder().append(x, x).isEquals());
assertTrue(new EqualsBuilder().append(y, y).isEquals());
assertTrue(new EqualsBuilder().append(x, y).isEquals());
assertTrue(new EqualsBuilder().append(y, x).isEquals());
}
/**
* Test from http://issues.apache.org/bugzilla/show_bug.cgi?id=33067
*/
@Test
public void testNpeForNullElement() {
final Object[] x1 = new Object[] { Integer.valueOf(1), null, Integer.valueOf(3) };
final Object[] x2 = new Object[] { Integer.valueOf(1), Integer.valueOf(2), Integer.valueOf(3) };
// causes an NPE in 2.0 according to:
// http://issues.apache.org/bugzilla/show_bug.cgi?id=33067
new EqualsBuilder().append(x1, x2);
}
@Test
public void testReflectionEqualsExcludeFields() throws Exception {
final TestObjectWithMultipleFields x1 = new TestObjectWithMultipleFields(1, 2, 3);
final TestObjectWithMultipleFields x2 = new TestObjectWithMultipleFields(1, 3, 4);
// not equal when including all fields
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2));
// doesn't barf on null, empty array, or non-existent field, but still tests as not equal
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2, (String[]) null));
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2, new String[] {}));
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2, new String[] {"xxx"}));
// not equal if only one of the differing fields excluded
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2, new String[] {"two"}));
assertTrue(!EqualsBuilder.reflectionEquals(x1, x2, new String[] {"three"}));
// equal if both differing fields excluded
assertTrue(EqualsBuilder.reflectionEquals(x1, x2, new String[] {"two", "three"}));
// still equal as long as both differing fields are among excluded
assertTrue(EqualsBuilder.reflectionEquals(x1, x2, new String[] {"one", "two", "three"}));
assertTrue(EqualsBuilder.reflectionEquals(x1, x2, new String[] {"one", "two", "three", "xxx"}));
}
static class TestObjectWithMultipleFields {
@SuppressWarnings("unused")
private final TestObject one;
@SuppressWarnings("unused")
private final TestObject two;
@SuppressWarnings("unused")
private final TestObject three;
public TestObjectWithMultipleFields(final int one, final int two, final int three) {
this.one = new TestObject(one);
this.two = new TestObject(two);
this.three = new TestObject(three);
}
}
/**
* Test cyclical object references which cause a StackOverflowException if
* not handled properly. s. LANG-606
*/
@Test
public void testCyclicalObjectReferences() {
final TestObjectReference refX1 = new TestObjectReference(1);
final TestObjectReference x1 = new TestObjectReference(1);
x1.setObjectReference(refX1);
refX1.setObjectReference(x1);
final TestObjectReference refX2 = new TestObjectReference(1);
final TestObjectReference x2 = new TestObjectReference(1);
x2.setObjectReference(refX2);
refX2.setObjectReference(x2);
final TestObjectReference refX3 = new TestObjectReference(2);
final TestObjectReference x3 = new TestObjectReference(2);
x3.setObjectReference(refX3);
refX3.setObjectReference(x3);
assertTrue(x1.equals(x2));
assertNull(EqualsBuilder.getRegistry());
assertFalse(x1.equals(x3));
assertNull(EqualsBuilder.getRegistry());
assertFalse(x2.equals(x3));
assertNull(EqualsBuilder.getRegistry());
}
static class TestObjectReference {
@SuppressWarnings("unused")
private TestObjectReference reference;
@SuppressWarnings("unused")
private final TestObject one;
public TestObjectReference(final int one) {
this.one = new TestObject(one);
}
public void setObjectReference(final TestObjectReference reference) {
this.reference = reference;
}
@Override
public boolean equals(final Object obj) {
return EqualsBuilder.reflectionEquals(this, obj);
}
}
@Test
public void testReflectionArrays() throws Exception {
final TestObject one = new TestObject(1);
final TestObject two = new TestObject(2);
final Object[] o1 = new Object[] { one };
final Object[] o2 = new Object[] { two };
final Object[] o3 = new Object[] { one };
assertTrue(!EqualsBuilder.reflectionEquals(o1, o2));
assertTrue(EqualsBuilder.reflectionEquals(o1, o1));
assertTrue(EqualsBuilder.reflectionEquals(o1, o3));
final double[] d1 = { 0, 1 };
final double[] d2 = { 2, 3 };
final double[] d3 = { 0, 1 };
assertTrue(!EqualsBuilder.reflectionEquals(d1, d2));
assertTrue(EqualsBuilder.reflectionEquals(d1, d1));
assertTrue(EqualsBuilder.reflectionEquals(d1, d3));
}
static class TestObjectEqualsExclude {
@EqualsExclude
private int a;
private int b;
public TestObjectEqualsExclude(int a, int b) {
this.a = a;
this.b = b;
}
public int getA() {
return a;
}
public int getB() {
return b;
}
}
@Test
public void testToEqualsExclude() {
TestObjectEqualsExclude one = new TestObjectEqualsExclude(1, 2);
TestObjectEqualsExclude two = new TestObjectEqualsExclude(1, 3);
assertFalse(EqualsBuilder.reflectionEquals(one, two));
one = new TestObjectEqualsExclude(1, 2);
two = new TestObjectEqualsExclude(2, 2);
assertTrue(EqualsBuilder.reflectionEquals(one, two));
}
}
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