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;
021import org.apache.hadoop.hbase.util.Bytes;
022import org.hamcrest.Description;
023import org.hamcrest.Matcher;
024import org.hamcrest.TypeSafeDiagnosingMatcher;
025
026/**
027 * Helper methods for matching against values passed through the helper methods of {@link Bytes}.
028 */
029public final class BytesMatchers {
030
031  private BytesMatchers() {}
032
033  public static Matcher<byte[]> bytesAsStringBinary(final String binary) {
034    return bytesAsStringBinary(is(binary));
035  }
036
037  public static Matcher<byte[]> bytesAsStringBinary(final Matcher<String> matcher) {
038    return new TypeSafeDiagnosingMatcher<byte[]>() {
039      @Override protected boolean matchesSafely(byte[] item, Description mismatchDescription) {
040        final String binary = Bytes.toStringBinary(item);
041        if (matcher.matches(binary)) {
042          return true;
043        }
044        mismatchDescription.appendText("was a byte[] with a Bytes.toStringBinary value ");
045        matcher.describeMismatch(binary, mismatchDescription);
046        return false;
047      }
048
049      @Override public void describeTo(Description description) {
050        description
051          .appendText("has a byte[] with a Bytes.toStringBinary value that ")
052          .appendDescriptionOf(matcher);
053      }
054    };
055  }
056}