001    /*
002     * Created on Oct 21, 2010
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
005     * the License. You may obtain a copy of the License at
006     *
007     * http://www.apache.org/licenses/LICENSE-2.0
008     *
009     * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
010     * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
011     * specific language governing permissions and limitations under the License.
012     *
013     * Copyright @2010-2011 the original author or authors.
014     */
015    package org.fest.assertions.api;
016    
017    import java.util.Comparator;
018    
019    import org.fest.assertions.core.NumberAssert;
020    import org.fest.assertions.internal.Bytes;
021    import org.fest.util.ComparatorBasedComparisonStrategy;
022    import org.fest.util.VisibleForTesting;
023    
024    /**
025     * Assertion methods for bytes.
026     * <p>
027     * To create an instance of this class, invoke <code>{@link Assertions#assertThat(Byte)}</code> or
028     * <code>{@link Assertions#assertThat(byte)}</code>.
029     * </p>
030     *
031     * @author Yvonne Wang
032     * @author David DIDIER
033     * @author Ansgar Konermann
034     * @author Alex Ruiz
035     * @author Mikhail Mazursky
036     * @author Nicolas François
037     */
038    public class ByteAssert extends AbstractComparableAssert<ByteAssert, Byte> implements NumberAssert<Byte> {
039    
040      @VisibleForTesting Bytes bytes = Bytes.instance();
041    
042      protected ByteAssert(Byte actual) {
043        super(actual, ByteAssert.class);
044      }
045    
046      /**
047       * Verifies that the actual value is equal to the given one.
048       * @param expected the given value to compare the actual value to.
049       * @return {@code this} assertion object.
050       * @throws AssertionError if the actual value is {@code null}.
051       * @throws AssertionError if the actual value is not equal to the given one.
052       */
053      public ByteAssert isEqualTo(byte expected) {
054        bytes.assertEqual(info, actual, expected);
055        return this;
056      }
057    
058      /**
059       * Verifies that the actual value is not equal to the given one.
060       * @param other the given value to compare the actual value to.
061       * @return {@code this} assertion object.
062       * @throws AssertionError if the actual value is {@code null}.
063       * @throws AssertionError if the actual value is equal to the given one.
064       */
065      public ByteAssert isNotEqualTo(byte other) {
066        bytes.assertNotEqual(info, actual, other);
067        return this;
068      }
069    
070      /** {@inheritDoc} */
071      public ByteAssert isZero() {
072        bytes.assertIsZero(info, actual);
073        return this;
074      }
075    
076      /** {@inheritDoc} */
077      public ByteAssert isNotZero() {
078        bytes.assertIsNotZero(info, actual);
079        return this;
080      }
081    
082      /** {@inheritDoc} */
083      public ByteAssert isPositive() {
084        bytes.assertIsPositive(info, actual);
085        return this;
086      }
087    
088      /** {@inheritDoc} */
089      public ByteAssert isNegative() {
090        bytes.assertIsNegative(info, actual);
091        return this;
092      }
093      
094      /** {@inheritDoc} */
095      public ByteAssert isNotNegative(){
096        bytes.assertIsNotNegative(info, actual);
097        return this;
098      }
099    
100      /** {@inheritDoc} */
101      public ByteAssert isNotPositive(){
102        bytes.assertIsNotPositive(info, actual);
103        return this;
104      }  
105      
106      
107      /**
108       * Verifies that the actual value is less than the given one.
109       * @param other the given value to compare the actual value to.
110       * @return {@code this} assertion object.
111       * @throws AssertionError if the actual value is {@code null}.
112       * @throws AssertionError if the actual value is equal to or greater than the given one.
113       */
114      public ByteAssert isLessThan(byte other) {
115        bytes.assertLessThan(info, actual, other);
116        return this;
117      }
118    
119      /**
120       * Verifies that the actual value is less than or equal to the given one.
121       * @param other the given value to compare the actual value to.
122       * @return {@code this} assertion object.
123       * @throws AssertionError if the actual value is {@code null}.
124       * @throws AssertionError if the actual value is greater than the given one.
125       */
126      public ByteAssert isLessThanOrEqualTo(byte other) {
127        bytes.assertLessThanOrEqualTo(info, actual, other);
128        return this;
129      }
130    
131      /**
132       * Verifies that the actual value is greater than the given one.
133       * @param other the given value to compare the actual value to.
134       * @return {@code this} assertion object.
135       * @throws AssertionError if the actual value is {@code null}.
136       * @throws AssertionError if the actual value is equal to or less than the given one.
137       */
138      public ByteAssert isGreaterThan(byte other) {
139        bytes.assertGreaterThan(info, actual, other);
140        return this;
141      }
142    
143      /**
144       * Verifies that the actual value is greater than or equal to the given one.
145       * @param other the given value to compare the actual value to.
146       * @return {@code this} assertion object.
147       * @throws AssertionError if the actual value is {@code null}.
148       * @throws AssertionError if the actual value is less than the given one.
149       */
150      public ByteAssert isGreaterThanOrEqualTo(byte other) {
151        bytes.assertGreaterThanOrEqualTo(info, actual, other);
152        return this;
153      }
154    
155      @Override
156      public ByteAssert usingComparator(Comparator<? super Byte> customComparator) {
157        super.usingComparator(customComparator);
158        this.bytes = new Bytes(new ComparatorBasedComparisonStrategy(customComparator));
159        return myself;
160      }
161      
162      @Override
163      public ByteAssert usingDefaultComparator() {
164        super.usingDefaultComparator();
165        this.bytes = Bytes.instance();
166        return myself;
167      }
168    }