BUG-7464: Add a dedicated ImmutableEntrySet

[yangtools.git] / third-party / triemap / src / test / java / org / opendaylight / yangtools / triemap / TestMapIterator.java

diff --git a/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/TestMapIterator.java b/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/TestMapIterator.java
index 43abcc18bae5cc3a998dddf65a07880a3b08c371..ab6e9fdd1253da1dcfcb656fdf01dc9db969a0fe 100644 (file)
--- a/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/TestMapIterator.java
+++ b/third-party/triemap/src/test/java/org/opendaylight/yangtools/triemap/TestMapIterator.java
@@ -1,57 +1,99 @@
+/*
+ * (C) Copyright 2016 Pantheon Technologies, s.r.o. and others.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package org.opendaylight.yangtools.triemap;
 
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+
 import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Map.Entry;
+import java.util.NoSuchElementException;
 import java.util.Random;
 import java.util.Set;
-
 import org.junit.Test;
 
 public class TestMapIterator {
     @Test
     public void testMapIterator () {
-        for (int i = 0; i < 60 * 1000; i+= 400 + new Random ().nextInt (400)) {
-            System.out.println (i);
-            final Map<Integer, Integer> bt = new TrieMap <Integer, Integer> ();
+        final Random random = new Random();
+
+        for (int i = 0; i < 60 * 1000; i+= 400 + random.nextInt(400)) {
+            final Map<Integer, Integer> bt = TrieMap.create();
             for (int j = 0; j < i; j++) {
-                TestHelper.assertEquals (null, bt.put (Integer.valueOf (j), Integer.valueOf (j)));
+                assertNull(bt.put(Integer.valueOf(j), Integer.valueOf(j)));
             }
             int count = 0;
-            final Set<Integer> set = new HashSet<Integer> ();
-            for (final Map.Entry<Integer, Integer> e : bt.entrySet ()) {
-                set.add (e.getKey ());
+            final Set<Integer> set = new HashSet<>();
+            for (final Entry<Integer, Integer> e : bt.entrySet()) {
+                set.add(e.getKey());
                 count++;
             }
             for (final Integer j : set) {
-                TestHelper.assertTrue (bt.containsKey (j));
+                assertTrue(bt.containsKey(j));
             }
-            for (final Integer j : bt.keySet ()) {
-                TestHelper.assertTrue (set.contains (j));
+            for (final Integer j : bt.keySet()) {
+                assertTrue(set.contains(j));
             }
 
-            TestHelper.assertEquals (i, count);
-            TestHelper.assertEquals (i, bt.size ());
-            
-            for (final Iterator<Map.Entry<Integer, Integer>> iter = bt.entrySet ().iterator (); iter.hasNext ();) {
-                final Entry<Integer, Integer> e = iter.next ();
-                TestHelper.assertTrue (e.getValue () == bt.get (e.getKey ()));
-                e.setValue (e.getValue () + 1);
-                TestHelper.assertTrue (e.getValue () == e.getKey () + 1);
-                TestHelper.assertTrue (e.getValue () == bt.get (e.getKey ()));
-                e.setValue (e.getValue () - 1);
+            assertEquals(i, count);
+            assertEquals(i, bt.size());
+
+            for (Entry<Integer, Integer> e : bt.entrySet()) {
+                assertSame(e.getValue(), bt.get(e.getKey()));
+                e.setValue(e.getValue() + 1);
+                assertEquals((Object)e.getValue(), e.getKey () + 1);
+                assertEquals(e.getValue(), bt.get(e.getKey()));
+                e.setValue(e.getValue() - 1);
             }
 
-            for (final Iterator<Integer> iter = bt.keySet ().iterator (); iter.hasNext ();) {
-                final Integer k = iter.next ();
-                TestHelper.assertTrue (bt.containsKey (k));
-                iter.remove ();
-                TestHelper.assertFalse (bt.containsKey (k));
+            final Iterator<Integer> it = bt.keySet().iterator();
+            while(it.hasNext()) {
+                final Integer k = it.next ();
+                assertTrue(bt.containsKey(k));
+                it.remove();
+                assertFalse(bt.containsKey(k));
             }
-            
-            TestHelper.assertEquals (0, bt.size ());
-            TestHelper.assertTrue (bt.isEmpty ());
+
+            assertEquals(0, bt.size ());
+            assertTrue(bt.isEmpty ());
         }
     }
+
+    private static void failAdvance(final Iterator<?> it) {
+        assertFalse(it.hasNext());
+        it.next();
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void testEmptyIterator() {
+        failAdvance(TrieMap.create().iterator());
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void testEmptyReadOnlyIterator() {
+        failAdvance(TrieMap.create().immutableIterator());
+    }
+
+    @Test(expected = NoSuchElementException.class)
+    public void testEmptyReadOnlySnapshotIterator() {
+        failAdvance( TrieMap.create().immutableSnapshot().iterator());
+    }
 }