org.dmfs.jems2.hamcrest.matchers.single.SingleMatcher Maven / Gradle / Ivy

Go to download
/*
 * Copyright 2021 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.jems2.hamcrest.matchers.single;

import org.dmfs.jems2.Fragile;
import org.dmfs.jems2.Single;
import org.hamcrest.Matcher;

import static org.dmfs.jems2.hamcrest.matchers.LambdaMatcher.having;
import static org.hamcrest.CoreMatchers.equalTo;


/**
 * {@link Matcher} for {@link Single}.
 */
public final class SingleMatcher
{
    private SingleMatcher()
    {
    }


    public static  Matcher> hasValue(Matcher valueMatcher)
    {
        return having("value", Fragile::value, valueMatcher);
    }


    public static  Matcher> hasValue(T expectedValue)
    {
        return hasValue(equalTo(expectedValue));
    }
}