/**
* Copyright 2011-2017 Asakusa Framework Team.
*
* Licensed 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 com.asakusafw.testdriver.rule;
import java.math.BigDecimal;
import java.text.MessageFormat;
/**
* Accepts iff actual decimal is in [ expected + lower-bound, expected + upper-bound ].
* @since 0.2.0
*/
public class DecimalRange implements ValuePredicate<BigDecimal> {
private final BigDecimal lowerBound;
private final BigDecimal upperBound;
/**
* Creates a new instance.
* @param lowerBound lower bound offset from expected value
* @param upperBound upper bound offset from expected value
*/
public DecimalRange(BigDecimal lowerBound, BigDecimal upperBound) {
this.lowerBound = lowerBound;
this.upperBound = upperBound;
}
@Override
public boolean accepts(BigDecimal expected, BigDecimal actual) {
if (expected == null || actual == null) {
throw new IllegalArgumentException();
}
return expected.add(lowerBound).compareTo(actual) <= 0
&& actual.compareTo(expected.add(upperBound)) <= 0;
}
@Override
public String describeExpected(BigDecimal expected, BigDecimal actual) {
if (expected == null) {
return "(error)"; //$NON-NLS-1$
}
return MessageFormat.format(
"{0} ~ {1}", //$NON-NLS-1$
Util.format(expected.add(lowerBound)),
Util.format(expected.add(upperBound)));
}
}