/*
    * Copyright 2019 SPF4J.
    *
    * 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.spf4j.test.matchers;
  
  import java.util.function.Predicate;
  import org.hamcrest.Description;
  import org.hamcrest.Matcher;
  import org.hamcrest.TypeSafeMatcher;
  
  /**
   *
   * @author Zoltan Farkas
   */
  public final class PredicateMatcher<T> extends TypeSafeMatcher<T> {
  
    private final Predicate<T> predicate;
  
    public PredicateMatcher(final Predicate<T> predicate) {
      this.predicate = predicate;
    }
  
    @Override
    protected boolean matchesSafely(final T item) {
      return predicate.test(item);
    }
  
    @Override
    public void describeTo(final Description description) {
      description.appendText("a object testing positively for '" + predicate + "'");
    }
  
    public static <T> Matcher<T> matchesPredicate(final Predicate<T> pred) {
      return new PredicateMatcher<>(pred);
    }
  
  }