src/test/java/net/pterodactylus/sone/Matchers.java

   1 /*
   2  * Sone - Matchers.java - Copyright © 2013 David Roden
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 package net.pterodactylus.sone;
  19
  20 import static java.util.Arrays.asList;
  21 import static java.util.regex.Pattern.compile;
  22
  23 import java.util.Collection;
  24 import java.util.Iterator;
  25 import java.util.List;
  26
  27 import com.google.common.base.Objects;
  28 import com.google.common.collect.Lists;
  29 import org.hamcrest.Description;
  30 import org.hamcrest.Matcher;
  31 import org.hamcrest.TypeSafeMatcher;
  32
  33 /**
  34  * Matchers used throughout the tests.
  35  *
  36  * @author <a href="mailto:bombe@pterodactylus.net">David ‘Bombe’ Roden</a>
  37  */
  38 public class Matchers {
  39
  40         public static Matcher<String> matches(final String regex) {
  41                 return new TypeSafeMatcher<String>() {
  42                         @Override
  43                         protected boolean matchesSafely(String item) {
  44                                 return compile(regex).matcher(item).find();
  45                         }
  46
  47                         @Override
  48                         public void describeTo(Description description) {
  49                                 description.appendText("matches: ").appendValue(regex);
  50                         }
  51                 };
  52         }
  53
  54         public static <T> Matcher<Iterator<T>> contains(T... items) {
  55                 return contains(asList(items));
  56         }
  57
  58         public static <T> Matcher<Iterator<T>> contains(final Collection<T> items) {
  59                 return new TypeSafeMatcher<Iterator<T>>() {
  60                         @Override
  61                         protected boolean matchesSafely(Iterator<T> iterator) {
  62                                 for (T item : items) {
  63                                         if (!iterator.hasNext()) {
  64                                                 return false;
  65                                         }
  66                                         T nextItem = iterator.next();
  67                                         if (!Objects.equal(item, nextItem)) {
  68                                                 return false;
  69                                         }
  70                                 }
  71                                 if (iterator.hasNext()) {
  72                                         return false;
  73                                 }
  74                                 return true;
  75                         }
  76
  77                         @Override
  78                         public void describeTo(Description description) {
  79                                 description.appendText("contains ").appendValue(items);
  80                         }
  81                 };
  82         }
  83
  84         public static <T> Matcher<Iterator<T>> containsInAnyOrder(T... items) {
  85                 return containsInAnyOrder(asList(items));
  86         }
  87
  88         public static <T> Matcher<Iterator<T>> containsInAnyOrder(final Collection<T> items) {
  89                 return new TypeSafeMatcher<Iterator<T>>() {
  90                         private final List<T> remainingItems = Lists.newArrayList(items);
  91                         @Override
  92                         protected boolean matchesSafely(Iterator<T> iterator) {
  93                                 while (iterator.hasNext()) {
  94                                         T item = iterator.next();
  95                                         if (remainingItems.isEmpty()) {
  96                                                 return false;
  97                                         }
  98                                         if (!remainingItems.remove(item)) {
  99                                                 return false;
 100                                         }
 101                                 }
 102                                 if (!remainingItems.isEmpty()) {
 103                                         return false;
 104                                 }
 105                                 return true;
 106                         }
 107
 108                         @Override
 109                         public void describeTo(Description description) {
 110                                 description.appendText("contains ").appendValue(items);
 111                         }
 112                 };
 113         }
 114
 115 }