FilePresentMatcher.java

/*
 * Copyright 2014 Bernd Vogt and others.
 * 
 * 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.sourcepit.b2.its.util;


import java.io.File;

import org.hamcrest.Description;
import org.hamcrest.Factory;
import org.hamcrest.Matcher;
import org.hamcrest.TypeSafeDiagnosingMatcher;

public class FilePresentMatcher extends TypeSafeDiagnosingMatcher<File> {
   private boolean shouldBePresent;


   public FilePresentMatcher(boolean shouldBePresent) {
      this.shouldBePresent = shouldBePresent;
   }


   @Factory
   public static Matcher<File> isPresent() {
      return new FilePresentMatcher(true);
   }

   @Factory
   public static Matcher<File> isNotPresent() {
      return new FilePresentMatcher(false);
   }

   @Override
   public void describeTo(Description description) {
      description.appendText("A" + (shouldBePresent ? "n" : " NOT") + " existing file/directory.");

   }

   @Override
   protected boolean matchesSafely(File item, Description mismatchDescription) {
      if (item.exists() != shouldBePresent) {
         mismatchDescription.appendText((item.isDirectory() ? "Directory '" : "File '") + item.getName() + "' did "
            + (item.exists() ? "" : " NOT ") + " exist.\nFull Path: " + item.getAbsolutePath());
         return false;
      }
      return true;
   }
}