001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.client.hamcrest;
019
020import static org.hamcrest.core.Is.is;
021
022import org.apache.hadoop.hbase.util.Bytes;
023import org.hamcrest.Description;
024import org.hamcrest.Matcher;
025import org.hamcrest.TypeSafeDiagnosingMatcher;
026
027/**
028 * Helper methods for matching against values passed through the helper methods of {@link Bytes}.
029 */
030public final class BytesMatchers {
031
032  private BytesMatchers() {
033  }
034
035  public static Matcher<byte[]> bytesAsStringBinary(final String binary) {
036    return bytesAsStringBinary(is(binary));
037  }
038
039  public static Matcher<byte[]> bytesAsStringBinary(final Matcher<String> matcher) {
040    return new TypeSafeDiagnosingMatcher<byte[]>() {
041      @Override
042      protected boolean matchesSafely(byte[] item, Description mismatchDescription) {
043        final String binary = Bytes.toStringBinary(item);
044        if (matcher.matches(binary)) {
045          return true;
046        }
047        mismatchDescription.appendText("was a byte[] with a Bytes.toStringBinary value ");
048        matcher.describeMismatch(binary, mismatchDescription);
049        return false;
050      }
051
052      @Override
053      public void describeTo(Description description) {
054        description.appendText("has a byte[] with a Bytes.toStringBinary value that ")
055          .appendDescriptionOf(matcher);
056      }
057    };
058  }
059}