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// Test of Byte method compareTo(Object).
// Copyright 2012 Red Hat, Inc.
// Written by Pavel Tisnovsky <ptisnovs@redhat.com>
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published
// by the Free Software Foundation, either version 2 of the License, or
// (at your option) any later version.
//
// This program 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 for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software Foundation
// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307 USA
// Tags: JDK1.4
// Tags: CompileOptions: -source 1.4
package gnu.testlet.java.lang.Byte;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
/**
* Test the method Byte.compareTo(Object);
*/
public class compareToObject implements Testlet
{
public static final int LESS = -1;
public static final int EQUAL = 0;
public static final int GREATER = 1;
TestHarness harness;
void compare(Byte i1, Object o, int expected)
{
// the result need not be -1, 0, 1; just <0, 0, >0
int result = i1.compareTo(o);
switch (expected)
{
case LESS:
harness.check(result < 0);
break;
case EQUAL:
harness.check(result == 0);
break;
case GREATER:
harness.check(result > 0);
break;
default:
throw new Error();
}
}
/**
* Entry point to this test.
*/
public void test(TestHarness harness)
{
this.harness = harness;
Byte min = new Byte(Byte.MIN_VALUE);
Byte negativeOne = new Byte((byte)-1);
Byte zero = new Byte((byte)0);
Byte positiveOne = new Byte((byte)1);
Byte max = new Byte(Byte.MAX_VALUE);
harness.checkPoint("compareTo");
compare(min, min, EQUAL);
compare(min, negativeOne, LESS);
compare(min, zero, LESS);
compare(min, positiveOne, LESS);
compare(min, max, LESS);
compare(negativeOne, min, GREATER);
compare(negativeOne, negativeOne, EQUAL);
compare(negativeOne, zero, LESS);
compare(negativeOne, positiveOne, LESS);
compare(negativeOne, max, LESS);
compare(zero, min, GREATER);
compare(zero, negativeOne, GREATER);
compare(zero, zero, EQUAL);
compare(zero, positiveOne, LESS);
compare(zero, max, LESS);
compare(positiveOne, min, GREATER);
compare(positiveOne, negativeOne, GREATER);
compare(positiveOne, zero, GREATER);
compare(positiveOne, positiveOne, EQUAL);
compare(positiveOne, max, LESS);
compare(max, min, GREATER);
compare(max, negativeOne, GREATER);
compare(max, zero, GREATER);
compare(max, positiveOne, GREATER);
compare(max, max, EQUAL);
Object o = zero;
boolean ok;
harness.check(((Comparable)zero).compareTo(o) == 0);
ok = false;
try
{
zero.compareTo((Byte) null);
}
catch (NullPointerException e)
{
ok = true;
}
harness.check(ok);
ok = false;
try
{
((Comparable)zero).compareTo((Object) null);
}
catch (NullPointerException e)
{
ok = true;
}
harness.check(ok);
ok = false;
try
{
((Comparable)zero).compareTo(new Object());
}
catch (ClassCastException e)
{
ok = true;
}
harness.check(ok);
harness.checkPoint("negative test");
try {
Byte a;
Integer b;
a = new Byte((byte)1);
b = new Integer((byte)2);
compare(a,b,1);
harness.fail("Exception should be thrown here.");
}
catch (ClassCastException e) {
// ok - exception was thrown
harness.check(true);
}
try {
Byte a;
String b;
a = new Byte((byte)1);
b = "foobar";
compare(a,b,1);
harness.fail("Exception should be thrown here.");
}
catch (ClassCastException e) {
// ok - exception was thrown
harness.check(true);
}
}
}
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