org.dmfs.jems.hamcrest.matchers.PairMatcher Maven / Gradle / Ivy
/*
* Copyright 2017 dmfs GmbH
*
*
* 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 org.dmfs.jems.hamcrest.matchers;
import org.dmfs.jems.pair.Pair;
import org.hamcrest.Description;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;
import static org.hamcrest.CoreMatchers.equalTo;
/**
* {@link Matcher} for {@link Pair}.
*
* @author Gabor Keszthelyi
*/
public final class PairMatcher extends TypeSafeDiagnosingMatcher>
{
private final Matcher mLeftValueMatcher;
private final Matcher mRightValueMatcher;
public PairMatcher(Matcher leftValueMatcher, Matcher rightValueMatcher)
{
mLeftValueMatcher = leftValueMatcher;
mRightValueMatcher = rightValueMatcher;
}
@Override
protected boolean matchesSafely(Pair actualPair, Description mismatchDescription)
{
if (!mLeftValueMatcher.matches(actualPair.left()))
{
mismatchDescription.appendText("Left value doesn't match: ");
mLeftValueMatcher.describeMismatch(actualPair.left(), mismatchDescription);
return false;
}
else if (!mRightValueMatcher.matches(actualPair.right()))
{
mismatchDescription.appendText("Right value doesn't match: ");
mRightValueMatcher.describeMismatch(actualPair.right(), mismatchDescription);
return false;
}
return true;
}
@Override
public void describeTo(Description description)
{
description.appendText("is Pair with left value: ");
mLeftValueMatcher.describeTo(description);
description.appendText(" , and right value: ");
mRightValueMatcher.describeTo(description);
}
/**
* Matcher that matches when the provided left and right value equals() to actual {@link Pair}s left and right value.
*/
public static Matcher> pair(L leftValue, R rightValue)
{
return new PairMatcher<>(equalTo(leftValue), equalTo(rightValue));
}
/**
* Matcher that matches when the provided {@link Matcher}s for the left and right value match with the {@link Pair}s left and right value.
*/
public static Matcher> pair(Matcher leftValueMatcher, Matcher rightValueMatcher)
{
return new PairMatcher<>(leftValueMatcher, rightValueMatcher);
}
}