/*
* TestUtilities.java 16 mai 07
*
* Copyright (c) 2007 Emmanuel PUYBARET / eTeks <info@eteks.com>. All Rights Reserved.
*
* 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
*/
package com.eteks.sweethome3d.junit;
import java.awt.Component;
import java.awt.Container;
import java.lang.reflect.Field;
import junit.framework.TestCase;
import abbot.finder.BasicFinder;
import abbot.finder.ComponentSearchException;
import abbot.finder.Matcher;
/**
* Gathers tools used by tests.
* @author Emmanuel Puybaret
*/
public final class TestUtilities {
private TestUtilities() {
// This class isn't instantiable and contains only static methods
}
/**
* Returns a reference to <code>fieldName</code>
* in a given <code>instance</code> by reflection.
*/
public static Object getField(Object instance, String fieldName)
throws NoSuchFieldException, IllegalAccessException {
Field field = instance.getClass().getDeclaredField(fieldName);
field.setAccessible(true);
return field.get(instance);
}
/**
* Sets the value of the <code>fieldName</code>
* in a given <code>instance</code> by reflection.
*/
public static void setField(Object instance, String fieldName, Object value)
throws NoSuchFieldException, IllegalAccessException {
Field field = instance.getClass().getDeclaredField(fieldName);
field.setAccessible(true);
field.set(instance, value);
}
/**
* Returns the component of a given class in <code>container</code> hierarchy.
*/
public static Component findComponent(Container container,
final Class componentClass)
throws ComponentSearchException {
return new BasicFinder().find(container, new Matcher () {
public boolean matches(Component component) {
return componentClass.isInstance(component);
}
});
}
/**
* Asserts <code>value1</code> equals <code>value2</code> within <code>epsilon</code>.
*/
public static void assertEqualsWithinEpsilon(String message,
float value1, float value2, float epsilon) {
TestCase.assertTrue(message + ", expected:" + value1 + " but was:" + value2,
Math.abs(value1 - value2) < epsilon);
}
}