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    }