/*
* 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.assertTrue;
import java.math.BigInteger;
import org.junit.Test;
/**
* Unit tests {@link org.apache.commons.lang3.builder.CompareToBuilder}.
*
* @version $Id$
*/
public class CompareToBuilderTest {
//-----------------------------------------------------------------------
static class TestObject implements Comparable<TestObject> {
private int a;
public TestObject(final int a) {
this.a = a;
}
@Override
public boolean equals(final Object o) {
if (o == this) {
return true;
}
if (!(o instanceof TestObject)) {
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;
}
@Override
public int compareTo(final TestObject rhs) {
return a < rhs.a ? -1 : a > rhs.a ? +1 : 0;
}
}
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 == this) {
return true;
}
if (!(o instanceof TestSubObject)) {
return false;
}
final TestSubObject rhs = (TestSubObject) o;
return super.equals(o) && b == rhs.b;
}
}
static class TestTransientSubObject extends TestObject {
@SuppressWarnings("unused")
private transient int t;
public TestTransientSubObject(final int a, final int t) {
super(a);
this.t = t;
}
}
@Test
public void testReflectionCompare() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(4);
assertTrue(CompareToBuilder.reflectionCompare(o1, o1) == 0);
assertTrue(CompareToBuilder.reflectionCompare(o1, o2) == 0);
o2.setA(5);
assertTrue(CompareToBuilder.reflectionCompare(o1, o2) < 0);
assertTrue(CompareToBuilder.reflectionCompare(o2, o1) > 0);
}
@Test(expected=NullPointerException.class)
public void testReflectionCompareEx1() {
final TestObject o1 = new TestObject(4);
CompareToBuilder.reflectionCompare(o1, null);
}
@Test(expected=ClassCastException.class)
public void testReflectionCompareEx2() {
final TestObject o1 = new TestObject(4);
final Object o2 = new Object();
CompareToBuilder.reflectionCompare(o1, o2);
}
@Test
public void testReflectionHierarchyCompare() {
testReflectionHierarchyCompare(false, null);
}
@Test
public void testReflectionHierarchyCompareExcludeFields() {
final String[] excludeFields = new String[] { "b" };
testReflectionHierarchyCompare(true, excludeFields);
TestSubObject x;
TestSubObject y;
TestSubObject z;
x = new TestSubObject(1, 1);
y = new TestSubObject(2, 1);
z = new TestSubObject(3, 1);
assertXYZCompareOrder(x, y, z, true, excludeFields);
x = new TestSubObject(1, 3);
y = new TestSubObject(2, 2);
z = new TestSubObject(3, 1);
assertXYZCompareOrder(x, y, z, true, excludeFields);
}
@Test
public void testReflectionHierarchyCompareTransients() {
testReflectionHierarchyCompare(true, null);
TestTransientSubObject x;
TestTransientSubObject y;
TestTransientSubObject z;
x = new TestTransientSubObject(1, 1);
y = new TestTransientSubObject(2, 2);
z = new TestTransientSubObject(3, 3);
assertXYZCompareOrder(x, y, z, true, null);
x = new TestTransientSubObject(1, 1);
y = new TestTransientSubObject(1, 2);
z = new TestTransientSubObject(1, 3);
assertXYZCompareOrder(x, y, z, true, null);
}
private void assertXYZCompareOrder(final Object x, final Object y, final Object z, final boolean testTransients, final String[] excludeFields) {
assertTrue(0 == CompareToBuilder.reflectionCompare(x, x, testTransients, null, excludeFields));
assertTrue(0 == CompareToBuilder.reflectionCompare(y, y, testTransients, null, excludeFields));
assertTrue(0 == CompareToBuilder.reflectionCompare(z, z, testTransients, null, excludeFields));
assertTrue(0 > CompareToBuilder.reflectionCompare(x, y, testTransients, null, excludeFields));
assertTrue(0 > CompareToBuilder.reflectionCompare(x, z, testTransients, null, excludeFields));
assertTrue(0 > CompareToBuilder.reflectionCompare(y, z, testTransients, null, excludeFields));
assertTrue(0 < CompareToBuilder.reflectionCompare(y, x, testTransients, null, excludeFields));
assertTrue(0 < CompareToBuilder.reflectionCompare(z, x, testTransients, null, excludeFields));
assertTrue(0 < CompareToBuilder.reflectionCompare(z, y, testTransients, null, excludeFields));
}
private void testReflectionHierarchyCompare(final boolean testTransients, final String[] excludeFields) {
final TestObject to1 = new TestObject(1);
final TestObject to2 = new TestObject(2);
final TestObject to3 = new TestObject(3);
final TestSubObject tso1 = new TestSubObject(1, 1);
final TestSubObject tso2 = new TestSubObject(2, 2);
final TestSubObject tso3 = new TestSubObject(3, 3);
assertReflectionCompareContract(to1, to1, to1, false, excludeFields);
assertReflectionCompareContract(to1, to2, to3, false, excludeFields);
assertReflectionCompareContract(tso1, tso1, tso1, false, excludeFields);
assertReflectionCompareContract(tso1, tso2, tso3, false, excludeFields);
assertReflectionCompareContract("1", "2", "3", false, excludeFields);
assertTrue(0 != CompareToBuilder.reflectionCompare(tso1, new TestSubObject(1, 0), testTransients));
assertTrue(0 != CompareToBuilder.reflectionCompare(tso1, new TestSubObject(0, 1), testTransients));
// root class
assertXYZCompareOrder(to1, to2, to3, true, null);
// subclass
assertXYZCompareOrder(tso1, tso2, tso3, true, null);
}
/**
* See "Effective Java" under "Consider Implementing Comparable".
*
* @param x an object to compare
* @param y an object to compare
* @param z an object to compare
* @param testTransients Whether to include transients in the comparison
* @param excludeFields fields to exclude
*/
private void assertReflectionCompareContract(final Object x, final Object y, final Object z, final boolean testTransients, final String[] excludeFields) {
// signum
assertTrue(reflectionCompareSignum(x, y, testTransients, excludeFields) == -reflectionCompareSignum(y, x, testTransients, excludeFields));
// transitive
if (CompareToBuilder.reflectionCompare(x, y, testTransients, null, excludeFields) > 0
&& CompareToBuilder.reflectionCompare(y, z, testTransients, null, excludeFields) > 0){
assertTrue(CompareToBuilder.reflectionCompare(x, z, testTransients, null, excludeFields) > 0);
}
// un-named
if (CompareToBuilder.reflectionCompare(x, y, testTransients, null, excludeFields) == 0) {
assertTrue(reflectionCompareSignum(x, z, testTransients, excludeFields) == -reflectionCompareSignum(y, z, testTransients, excludeFields));
}
// strongly recommended but not strictly required
assertTrue(CompareToBuilder.reflectionCompare(x, y, testTransients) ==0 == EqualsBuilder.reflectionEquals(x, y, testTransients));
}
/**
* Returns the signum of the result of comparing x and y with
* <code>CompareToBuilder.reflectionCompare</code>
*
* @param lhs The "left-hand-side" of the comparison.
* @param rhs The "right-hand-side" of the comparison.
* @param testTransients Whether to include transients in the comparison
* @param excludeFields fields to exclude
* @return int The signum
*/
private int reflectionCompareSignum(final Object lhs, final Object rhs, final boolean testTransients, final String[] excludeFields) {
return BigInteger.valueOf(CompareToBuilder.reflectionCompare(lhs, rhs, testTransients)).signum();
}
@Test
public void testAppendSuper() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(5);
assertTrue(new CompareToBuilder().appendSuper(0).append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().appendSuper(0).append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().appendSuper(0).append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().appendSuper(-1).append(o1, o1).toComparison() < 0);
assertTrue(new CompareToBuilder().appendSuper(-1).append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().appendSuper(1).append(o1, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().appendSuper(1).append(o1, o2).toComparison() > 0);
}
@Test
public void testObject() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(4);
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() == 0);
o2.setA(5);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((Object) null, (Object) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, o1).toComparison() < 0);
}
@Test
public void testObjectBuild() {
final TestObject o1 = new TestObject(4);
final TestObject o2 = new TestObject(4);
assertEquals(Integer.valueOf(0), new CompareToBuilder().append(o1, o1).build());
assertEquals(Integer.valueOf(0), new CompareToBuilder().append(o1, o2).build());
o2.setA(5);
assertTrue(new CompareToBuilder().append(o1, o2).build().intValue() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).build().intValue() > 0);
assertTrue(new CompareToBuilder().append(o1, null).build().intValue() > 0);
assertEquals(Integer.valueOf(0), new CompareToBuilder().append((Object) null, (Object) null).build());
assertTrue(new CompareToBuilder().append(null, o1).build().intValue() < 0);
}
@Test(expected=ClassCastException.class)
public void testObjectEx2() {
final TestObject o1 = new TestObject(4);
final Object o2 = new Object();
new CompareToBuilder().append(o1, o2);
}
@Test
public void testObjectComparator() {
final String o1 = "Fred";
String o2 = "Fred";
assertTrue(new CompareToBuilder().append(o1, o1, String.CASE_INSENSITIVE_ORDER).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2, String.CASE_INSENSITIVE_ORDER).toComparison() == 0);
o2 = "FRED";
assertTrue(new CompareToBuilder().append(o1, o2, String.CASE_INSENSITIVE_ORDER).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o2, o1, String.CASE_INSENSITIVE_ORDER).toComparison() == 0);
o2 = "FREDA";
assertTrue(new CompareToBuilder().append(o1, o2, String.CASE_INSENSITIVE_ORDER).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1, String.CASE_INSENSITIVE_ORDER).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, null, String.CASE_INSENSITIVE_ORDER).toComparison() > 0);
assertTrue(new CompareToBuilder().append((Object) null, (Object) null, String.CASE_INSENSITIVE_ORDER).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, o1, String.CASE_INSENSITIVE_ORDER).toComparison() < 0);
}
@Test
public void testObjectComparatorNull() {
final String o1 = "Fred";
String o2 = "Fred";
assertTrue(new CompareToBuilder().append(o1, o1, null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2, null).toComparison() == 0);
o2 = "Zebra";
assertTrue(new CompareToBuilder().append(o1, o2, null).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, null, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((Object) null, (Object) null, null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, o1, null).toComparison() < 0);
}
@Test
public void testLong() {
final long o1 = 1L;
final long o2 = 2L;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Long.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Long.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Long.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Long.MIN_VALUE, o1).toComparison() < 0);
}
@Test
public void testInt() {
final int o1 = 1;
final int o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Integer.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Integer.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Integer.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Integer.MIN_VALUE, o1).toComparison() < 0);
}
@Test
public void testShort() {
final short o1 = 1;
final short o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Short.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Short.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Short.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Short.MIN_VALUE, o1).toComparison() < 0);
}
@Test
public void testChar() {
final char o1 = 1;
final char o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Character.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Character.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Character.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Character.MIN_VALUE, o1).toComparison() < 0);
}
@Test
public void testByte() {
final byte o1 = 1;
final byte o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Byte.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Byte.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Byte.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Byte.MIN_VALUE, o1).toComparison() < 0);
}
@Test
public void testDouble() {
final double o1 = 1;
final double o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Double.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Double.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Double.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Double.MIN_VALUE, o1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Double.NaN, Double.NaN).toComparison() == 0);
assertTrue(new CompareToBuilder().append(Double.NaN, Double.MAX_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Double.POSITIVE_INFINITY, Double.MAX_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Double.NEGATIVE_INFINITY, Double.MIN_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o1, Double.NaN).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Double.NaN, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(-0.0, 0.0).toComparison() < 0);
assertTrue(new CompareToBuilder().append(0.0, -0.0).toComparison() > 0);
}
@Test
public void testFloat() {
final float o1 = 1;
final float o2 = 2;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Float.MAX_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Float.MAX_VALUE, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o1, Float.MIN_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Float.MIN_VALUE, o1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Float.NaN, Float.NaN).toComparison() == 0);
assertTrue(new CompareToBuilder().append(Float.NaN, Float.MAX_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Float.POSITIVE_INFINITY, Float.MAX_VALUE).toComparison() > 0);
assertTrue(new CompareToBuilder().append(Float.NEGATIVE_INFINITY, Float.MIN_VALUE).toComparison() < 0);
assertTrue(new CompareToBuilder().append(o1, Float.NaN).toComparison() < 0);
assertTrue(new CompareToBuilder().append(Float.NaN, o1).toComparison() > 0);
assertTrue(new CompareToBuilder().append(-0.0, 0.0).toComparison() < 0);
assertTrue(new CompareToBuilder().append(0.0, -0.0).toComparison() > 0);
}
@Test
public void testBoolean() {
final boolean o1 = true;
final boolean o2 = false;
assertTrue(new CompareToBuilder().append(o1, o1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o2, o2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(o1, o2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(o2, o1).toComparison() < 0);
}
@Test
public void testObjectArray() {
final TestObject[] obj1 = new TestObject[2];
obj1[0] = new TestObject(4);
obj1[1] = new TestObject(5);
final TestObject[] obj2 = new TestObject[2];
obj2[0] = new TestObject(4);
obj2[1] = new TestObject(5);
final TestObject[] obj3 = new TestObject[3];
obj3[0] = new TestObject(4);
obj3[1] = new TestObject(5);
obj3[2] = new TestObject(6);
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = new TestObject(7);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((Object[]) null, (Object[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testLongArray() {
final long[] obj1 = new long[2];
obj1[0] = 5L;
obj1[1] = 6L;
final long[] obj2 = new long[2];
obj2[0] = 5L;
obj2[1] = 6L;
final long[] obj3 = new long[3];
obj3[0] = 5L;
obj3[1] = 6L;
obj3[2] = 7L;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((long[]) null, (long[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testIntArray() {
final int[] obj1 = new int[2];
obj1[0] = 5;
obj1[1] = 6;
final int[] obj2 = new int[2];
obj2[0] = 5;
obj2[1] = 6;
final int[] obj3 = new int[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((int[]) null, (int[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testShortArray() {
final short[] obj1 = new short[2];
obj1[0] = 5;
obj1[1] = 6;
final short[] obj2 = new short[2];
obj2[0] = 5;
obj2[1] = 6;
final short[] obj3 = new short[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((short[]) null, (short[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testCharArray() {
final char[] obj1 = new char[2];
obj1[0] = 5;
obj1[1] = 6;
final char[] obj2 = new char[2];
obj2[0] = 5;
obj2[1] = 6;
final char[] obj3 = new char[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((char[]) null, (char[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testByteArray() {
final byte[] obj1 = new byte[2];
obj1[0] = 5;
obj1[1] = 6;
final byte[] obj2 = new byte[2];
obj2[0] = 5;
obj2[1] = 6;
final byte[] obj3 = new byte[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((byte[]) null, (byte[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testDoubleArray() {
final double[] obj1 = new double[2];
obj1[0] = 5;
obj1[1] = 6;
final double[] obj2 = new double[2];
obj2[0] = 5;
obj2[1] = 6;
final double[] obj3 = new double[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((double[]) null, (double[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testFloatArray() {
final float[] obj1 = new float[2];
obj1[0] = 5;
obj1[1] = 6;
final float[] obj2 = new float[2];
obj2[0] = 5;
obj2[1] = 6;
final float[] obj3 = new float[3];
obj3[0] = 5;
obj3[1] = 6;
obj3[2] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((float[]) null, (float[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testBooleanArray() {
final boolean[] obj1 = new boolean[2];
obj1[0] = true;
obj1[1] = false;
final boolean[] obj2 = new boolean[2];
obj2[0] = true;
obj2[1] = false;
final boolean[] obj3 = new boolean[3];
obj3[0] = true;
obj3[1] = false;
obj3[2] = true;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
obj1[1] = true;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj1, null).toComparison() > 0);
assertTrue(new CompareToBuilder().append((boolean[]) null, (boolean[]) null).toComparison() == 0);
assertTrue(new CompareToBuilder().append(null, obj1).toComparison() < 0);
}
@Test
public void testMultiLongArray() {
final long[][] array1 = new long[2][2];
final long[][] array2 = new long[2][2];
final long[][] array3 = new long[2][3];
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);
array3[i][j] = (i + 1) * (j + 1);
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiIntArray() {
final int[][] array1 = new int[2][2];
final int[][] array2 = new int[2][2];
final int[][] array3 = new int[2][3];
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);
array3[i][j] = (i + 1) * (j + 1);
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiShortArray() {
final short[][] array1 = new short[2][2];
final short[][] array2 = new short[2][2];
final short[][] array3 = new short[2][3];
for (short i = 0; i < array1.length; ++i) {
for (short j = 0; j < array1[0].length; j++) {
array1[i][j] = (short)((i + 1) * (j + 1));
array2[i][j] = (short)((i + 1) * (j + 1));
array3[i][j] = (short)((i + 1) * (j + 1));
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiCharArray() {
final char[][] array1 = new char[2][2];
final char[][] array2 = new char[2][2];
final char[][] array3 = new char[2][3];
for (short i = 0; i < array1.length; ++i) {
for (short j = 0; j < array1[0].length; j++) {
array1[i][j] = (char)((i + 1) * (j + 1));
array2[i][j] = (char)((i + 1) * (j + 1));
array3[i][j] = (char)((i + 1) * (j + 1));
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiByteArray() {
final byte[][] array1 = new byte[2][2];
final byte[][] array2 = new byte[2][2];
final byte[][] array3 = new byte[2][3];
for (byte i = 0; i < array1.length; ++i) {
for (byte j = 0; j < array1[0].length; j++) {
array1[i][j] = (byte)((i + 1) * (j + 1));
array2[i][j] = (byte)((i + 1) * (j + 1));
array3[i][j] = (byte)((i + 1) * (j + 1));
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 127;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiFloatArray() {
final float[][] array1 = new float[2][2];
final float[][] array2 = new float[2][2];
final float[][] array3 = new float[2][3];
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);
array3[i][j] = (i + 1) * (j + 1);
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 127;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiDoubleArray() {
final double[][] array1 = new double[2][2];
final double[][] array2 = new double[2][2];
final double[][] array3 = new double[2][3];
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);
array3[i][j] = (i + 1) * (j + 1);
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 127;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMultiBooleanArray() {
final boolean[][] array1 = new boolean[2][2];
final boolean[][] array2 = new boolean[2][2];
final boolean[][] array3 = new boolean[2][3];
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;
array3[i][j] = i == 1 ^ j == 1;
}
}
array3[1][2] = false;
array3[1][2] = false;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = true;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testRaggedArray() {
final long array1[][] = new long[2][];
final long array2[][] = new long[2][];
final long array3[][] = new long[3][];
for (int i = 0; i < array1.length; ++i) {
array1[i] = new long[2];
array2[i] = new long[2];
array3[i] = new long[3];
for (int j = 0; j < array1[i].length; ++j) {
array1[i][j] = (i + 1) * (j + 1);
array2[i][j] = (i + 1) * (j + 1);
array3[i][j] = (i + 1) * (j + 1);
}
}
array3[1][2] = 100;
array3[1][2] = 100;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
array1[1][1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@Test
public void testMixedArray() {
final Object array1[] = new Object[2];
final Object array2[] = new Object[2];
final Object array3[] = new Object[2];
for (int i = 0; i < array1.length; ++i) {
array1[i] = new long[2];
array2[i] = new long[2];
array3[i] = new long[3];
for (int j = 0; j < 2; ++j) {
((long[]) array1[i])[j] = (i + 1) * (j + 1);
((long[]) array2[i])[j] = (i + 1) * (j + 1);
((long[]) array3[i])[j] = (i + 1) * (j + 1);
}
}
((long[]) array3[0])[2] = 1;
((long[]) array3[1])[2] = 1;
assertTrue(new CompareToBuilder().append(array1, array1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(array1, array3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(array3, array1).toComparison() > 0);
((long[]) array1[1])[1] = 200;
assertTrue(new CompareToBuilder().append(array1, array2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(array2, array1).toComparison() < 0);
}
@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 TestObject[] array3 = new TestObject[3];
array3[0] = new TestObject(4);
array3[1] = new TestObject(5);
array3[2] = new TestObject(6);
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = new TestObject(7);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 long[] array3 = new long[3];
array3[0] = 5L;
array3[1] = 6L;
array3[2] = 7L;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 int[] array3 = new int[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 short[] array3 = new short[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 char[] array3 = new char[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 byte[] array3 = new byte[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 double[] array3 = new double[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 float[] array3 = new float[3];
array3[0] = 5;
array3[1] = 6;
array3[2] = 7;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = 7;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
@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 boolean[] array3 = new boolean[3];
array3[0] = true;
array3[1] = false;
array3[2] = true;
final Object obj1 = array1;
final Object obj2 = array2;
final Object obj3 = array3;
assertTrue(new CompareToBuilder().append(obj1, obj1).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() == 0);
assertTrue(new CompareToBuilder().append(obj1, obj3).toComparison() < 0);
assertTrue(new CompareToBuilder().append(obj3, obj1).toComparison() > 0);
array1[1] = true;
assertTrue(new CompareToBuilder().append(obj1, obj2).toComparison() > 0);
assertTrue(new CompareToBuilder().append(obj2, obj1).toComparison() < 0);
}
}