001 /*
002 * Created on Oct 17, 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.Integers;
021 import org.fest.util.ComparatorBasedComparisonStrategy;
022 import org.fest.util.VisibleForTesting;
023
024 /**
025 * Assertion methods for integers.
026 * <p>
027 * To create an instance of this class, invoke <code>{@link Assertions#assertThat(Integer)}</code> or
028 * <code>{@link Assertions#assertThat(int)}</code>.
029 * </p>
030 *
031 * @author Yvonne Wang
032 * @author David DIDIER
033 * @author Ansgar Konermann
034 * @author Alex Ruiz
035 * @author Joel Costigliola
036 * @author Mikhail Mazursky
037 * @author Nicolas François
038 */
039 public class IntegerAssert extends AbstractComparableAssert<IntegerAssert, Integer> implements NumberAssert<Integer> {
040
041 @VisibleForTesting Integers integers = Integers.instance();
042
043 protected IntegerAssert(Integer actual) {
044 super(actual, IntegerAssert.class);
045 }
046
047 /**
048 * Verifies that the actual value is equal to the given one.
049 * @param expected the given value to compare the actual value to.
050 * @return {@code this} assertion object.
051 * @throws AssertionError if the actual value is {@code null}.
052 * @throws AssertionError if the actual value is not equal to the given one.
053 */
054 public IntegerAssert isEqualTo(int expected) {
055 integers.assertEqual(info, actual, expected);
056 return this;
057 }
058
059 /**
060 * Verifies that the actual value is not equal to the given one.
061 * @param other the given value to compare the actual value to.
062 * @return {@code this} assertion object.
063 * @throws AssertionError if the actual value is {@code null}.
064 * @throws AssertionError if the actual value is equal to the given one.
065 */
066 public IntegerAssert isNotEqualTo(int other) {
067 integers.assertNotEqual(info, actual, other);
068 return this;
069 }
070
071 /** {@inheritDoc} */
072 public IntegerAssert isZero() {
073 integers.assertIsZero(info, actual);
074 return this;
075 }
076
077 /** {@inheritDoc} */
078 public IntegerAssert isNotZero() {
079 integers.assertIsNotZero(info, actual);
080 return this;
081 }
082
083 /** {@inheritDoc} */
084 public IntegerAssert isPositive() {
085 integers.assertIsPositive(info, actual);
086 return this;
087 }
088
089 /** {@inheritDoc} */
090 public IntegerAssert isNegative() {
091 integers.assertIsNegative(info, actual);
092 return this;
093 }
094
095 /** {@inheritDoc} */
096 public IntegerAssert isNotNegative(){
097 integers.assertIsNotNegative(info, actual);
098 return this;
099 }
100
101 /** {@inheritDoc} */
102 public IntegerAssert isNotPositive(){
103 integers.assertIsNotPositive(info, actual);
104 return this;
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 IntegerAssert isLessThan(int other) {
115 integers.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 IntegerAssert isLessThanOrEqualTo(int other) {
127 integers.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 IntegerAssert isGreaterThan(int other) {
139 integers.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 IntegerAssert isGreaterThanOrEqualTo(int other) {
151 integers.assertGreaterThanOrEqualTo(info, actual, other);
152 return this;
153 }
154
155
156 @Override
157 public IntegerAssert usingComparator(Comparator<? super Integer> customComparator) {
158 super.usingComparator(customComparator);
159 this.integers = new Integers(new ComparatorBasedComparisonStrategy(customComparator));
160 return myself;
161 }
162
163 @Override
164 public IntegerAssert usingDefaultComparator() {
165 super.usingDefaultComparator();
166 this.integers = Integers.instance();
167 return myself;
168 }
169 }