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/*
* Copyright (C) 2008 Steve Ratcliffe
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 3 or
* version 2 as published by the Free Software Foundation.
*
* 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.
*/
/* Create date: 01-Jul-2009 */
package func.lib;
import org.hamcrest.BaseMatcher;
import org.hamcrest.Description;
/**
* Test for a range of values around the expected one. This allows
* small changes without having to fix the test every time there is a
* small change to the output size.
*
* @author Steve Ratcliffe
*/
public class RangeMatcher extends BaseMatcher<Integer> {
private final int minVal;
private final int maxVal;
public RangeMatcher(int size) {
this(size, size/20+1);
}
public RangeMatcher(int size, int range) {
this.minVal = size - range;
this.maxVal = size + range;
}
public boolean matches(Object o) {
int other = (Integer) o;
if (other > minVal && other < maxVal)
return true;
else return false;
}
public void describeTo(Description description) {
description.appendValueList("between ", " and ", "", minVal, maxVal);
}
}
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