[dna-commits] DNA SVN: r427 - trunk/dna-common/src/test/java/org/jboss/dna/common/collection.

[dna-commits at lists.jboss.org]

Author: rhauch
Date: 2008-08-14 17:02:38 -0400 (Thu, 14 Aug 2008)
New Revision: 427

Added:
   trunk/dna-common/src/test/java/org/jboss/dna/common/collection/IsIteratorContaining.java
Log:
Added new matcher for use in asserting that iterators return specific items

Added: trunk/dna-common/src/test/java/org/jboss/dna/common/collection/IsIteratorContaining.java
===================================================================
--- trunk/dna-common/src/test/java/org/jboss/dna/common/collection/IsIteratorContaining.java	                        (rev 0)
+++ trunk/dna-common/src/test/java/org/jboss/dna/common/collection/IsIteratorContaining.java	2008-08-14 21:02:38 UTC (rev 427)
@@ -0,0 +1,88 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2008, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file in the
+ * distribution for a full listing of individual contributors. 
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this software; if not, write to the Free
+ * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.dna.common.collection;
+
+import static org.hamcrest.core.AllOf.allOf;
+import static org.hamcrest.core.IsEqual.equalTo;
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Iterator;
+import org.hamcrest.Description;
+import org.hamcrest.Factory;
+import org.hamcrest.Matcher;
+import org.junit.matchers.TypeSafeMatcher;
+
+/**
+ * @author Randall Hauch
+ * @param <T>
+ */
+public class IsIteratorContaining<T> extends TypeSafeMatcher<Iterator<T>> {
+    private final Matcher<? extends T> elementMatcher;
+
+    public IsIteratorContaining( Matcher<? extends T> elementMatcher ) {
+        this.elementMatcher = elementMatcher;
+    }
+
+    @Override
+    public boolean matchesSafely( Iterator<T> iterator ) {
+        while (iterator.hasNext()) {
+            T item = iterator.next();
+            if (elementMatcher.matches(item)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    public void describeTo( Description description ) {
+        description.appendText("a iterator containing ").appendDescriptionOf(elementMatcher);
+    }
+
+    @Factory
+    public static <T> Matcher<Iterator<T>> hasItem( Matcher<? extends T> elementMatcher ) {
+        return new IsIteratorContaining<T>(elementMatcher);
+    }
+
+    @Factory
+    public static <T> Matcher<Iterator<T>> hasItem( T element ) {
+        return hasItem(equalTo(element));
+    }
+
+    @Factory
+    public static <T> Matcher<Iterator<T>> hasItems( Matcher<? extends T>... elementMatchers ) {
+        Collection<Matcher<? extends Iterator<T>>> all = new ArrayList<Matcher<? extends Iterator<T>>>(elementMatchers.length);
+        for (Matcher<? extends T> elementMatcher : elementMatchers) {
+            all.add(hasItem(elementMatcher));
+        }
+        return allOf(all);
+    }
+
+    @Factory
+    public static <T> Matcher<Iterator<T>> hasItems( T... elements ) {
+        Collection<Matcher<? extends Iterator<T>>> all = new ArrayList<Matcher<? extends Iterator<T>>>(elements.length);
+        for (T element : elements) {
+            all.add(hasItem(element));
+        }
+        return allOf(all);
+    }
+
+}