Move CachedIteratorArrayList from core to router

router/java/test/junit/net/i2p/router/util/CachedIteratorArrayListTest.java

@@ -0,0 +1,92 @@
+package net.i2p.router.util;
+
+import static org.junit.Assert.*;
+
+import java.util.Collections;
+import java.util.Iterator;
+import java.util.List;
+
+import org.junit.Before;
+import org.junit.Test;
+
+public class CachedIteratorArrayListTest {
+
+    private List<Character> l;
+    private Iterator<Character> iter; 
+    
+    @Before
+    public void setUp() {
+        l = new CachedIteratorArrayList<Character>();
+        l.add('a');
+        l.add('b');
+        l.add('c');
+        iter = l.iterator();
+    }
+    
+    /** test iterations work */
+    @Test
+    public void test() {
+        String total = "";
+        
+        // two full for-each iterations
+        for (char i : l)
+            total += i;
+        assertEquals("abc", total);
+        for (char i : l)
+            total += i;
+        assertEquals("abcabc", total);
+        
+        // and one partial
+        total = "";
+        iter = l.iterator();
+        total += iter.next();
+        total += iter.next();
+        iter = l.iterator();
+        total += iter.next();
+        assertEquals("aba",total);
+    }
+    
+    @Test
+    public void testSameness() {
+        Iterator<Character> two = l.iterator();
+        Iterator<Character> one = l.iterator();
+        assertSame(one, two);
+    }
+    
+    @Test
+    public void testRemove() {
+        iter.next();
+        iter.remove();
+
+        // test proper removal
+        assertEquals(2,l.size());
+        assertEquals('b',l.get(0).charValue());
+        assertEquals('c',l.get(1).charValue());
+        
+        // test iterator still workx after removal
+        assertTrue(iter.hasNext());
+        assertEquals('b',iter.next().charValue());
+        assertEquals('c',iter.next().charValue());
+        assertFalse(iter.hasNext());
+    }
+    
+    /** 
+     * tests the Collections.sort method because that is used
+     * in the router and internally creates iterators
+     */
+    @Test
+    public void testSorting() {
+        List<Integer> li = new CachedIteratorArrayList<Integer>();
+        li.add(3);
+        li.add(2);
+        li.add(1);
+        Collections.sort(li);
+        
+        Iterator<Integer> ii = li.iterator();
+        assertEquals(1,ii.next().intValue());
+        assertEquals(2,ii.next().intValue());
+        assertEquals(3,ii.next().intValue());
+        
+        assertFalse(ii.hasNext());
+    }
+}