/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2005-2008, Open Source Geospatial Foundation (OSGeo)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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
* Lesser General Public License for more details.
*/
package org.geotools.util;
import org.junit.*;
import static org.junit.Assert.*;
import static org.geotools.util.Utilities.*;
/**
* Tests the {@link Utilities} static methods.
*
*
* @source $URL$
* @version $Id$
* @author Martin Desruisseaux
*/
public final class UtilitiesTest {
/**
* Tests {@link Utilities#ensureNonNull}.
*/
@Test
public void testEnsureNonNull() {
boolean isNull = false;
Object sampleObject = null;
try {
assertNull(sampleObject);
Utilities.ensureNonNull("sampleObject", sampleObject);
} catch (NullPointerException npe){
isNull = true;
}
assertTrue(isNull);
sampleObject = "";
try {
assertNotNull(sampleObject);
Utilities.ensureNonNull("sampleObject", sampleObject);
isNull = false;
} catch (NullPointerException npe){
isNull = true;
}
assertFalse(isNull);
}
/**
* Tests {@link Utilities#equals}.
*/
@Test
public void testEquals() {
assertTrue (Utilities.equals(null, null));
assertFalse(Utilities.equals(null, "" ));
assertFalse(Utilities.equals("" , null));
assertTrue (Utilities.equals("" , "" ));
assertFalse(Utilities.equals(" " , "" ));
}
/**
* Tests that the proper overloaded method of {@code equals} is selected.
* Actually there is no easy way to make sure that this test pass, except
* follow the execution of this method step-by-step in a debugger.
*/
@Test
public void testEqualOverload() {
/*
* The following should call the overloaded method for primitive types.
*/
char c1='A', c2='A'; assertTrue(Utilities.equals(c1, c2));
byte b1=65, b2=65; assertTrue(Utilities.equals(b1, b2));
short s1=65, s2=65; assertTrue(Utilities.equals(s1, s2));
int i1=65, i2=65; assertTrue(Utilities.equals(i1, i2));
long l1=65, l2=65; assertTrue(Utilities.equals(l1, l2));
float f1=65, f2=65; assertTrue(Utilities.equals(f1, f2));
double d1=65, d2=65; assertTrue(Utilities.equals(d1, d2));
/*
* The following should call the equals(Object,Object) method.
*/
Character C1=c1, C2=new Character(c2); assertTrue(Utilities.equals(C1, C2));
Byte B1=b1, B2=new Byte (b2); assertTrue(Utilities.equals(B1, B2));
Short S1=s1, S2=new Short (s2); assertTrue(Utilities.equals(S1, S2));
Integer I1=i1, I2=new Integer (i2); assertTrue(Utilities.equals(I1, I2));
Long L1=l1, L2=new Long (l2); assertTrue(Utilities.equals(L1, L2));
Float F1=f1, F2=new Float (f2); assertTrue(Utilities.equals(F1, F2));
Double D1=d1, D2=new Double (d2); assertTrue(Utilities.equals(D1, D2));
/*
* The compiler applies widening conversions, so the following are equals even if different
* types (including Character). The only case where the compiler seems to prefer auto-boxing
* is when exactly one argument is of boolean type.
*/
assertTrue(Utilities.equals(f1, d2));
assertTrue(Utilities.equals(i1, b2));
assertTrue(Utilities.equals(f1, b2));
assertTrue(Utilities.equals(f1, c2));
assertTrue(Utilities.equals(c1, i2));
assertTrue(Utilities.equals(c1, s2));
assertTrue(Utilities.equals(b1, c2));
/*
* Same tests than above, but using the wrapper classes rather than the primitive types.
* The wrapper classes are stricter; they do not accept anymore classes of different types.
*/
assertFalse(Utilities.equals(F1, D2));
assertFalse(Utilities.equals(I1, B2));
assertFalse(Utilities.equals(F1, B2));
assertFalse(Utilities.equals(F1, C2));
assertFalse(Utilities.equals(C1, I2));
assertFalse(Utilities.equals(C1, S2));
assertFalse(Utilities.equals(B1, C2));
}
/**
* Tests {@link Utilities#spaces}.
*/
@Test
public void testSpaces() {
assertEquals("", spaces(0));
assertEquals(" ", spaces(1));
assertEquals(" ", spaces(8));
}
}