1 files changed, 50 insertions, 0 deletions
diff --git a/vespajlib/src/test/java/com/yahoo/collections/ListenableArrayListTestCase.java b/vespajlib/src/test/java/com/yahoo/collections/ListenableArrayListTestCase.java
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+++ b/vespajlib/src/test/java/com/yahoo/collections/ListenableArrayListTestCase.java
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+// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
+package com.yahoo.collections;
+
+import org.junit.Test;
+import static org.junit.Assert.*;
+
+import java.util.Arrays;
+import java.util.ListIterator;
+
+/**
+ * @author <a href="mailto:bratseth@yahoo-inc.com">Jon Bratseth</a>
+ */
+public class ListenableArrayListTestCase {
+
+    @Test
+    public void testIt() {
+        ListenableArrayList<String> list = new ListenableArrayList<>();
+        ArrayListListener listener = new ArrayListListener();
+        list.addListener(listener);
+        assertEquals(0,listener.invoked);
+        list.add("a");
+        assertEquals(1,listener.invoked);
+        list.add(0,"b");
+        assertEquals(2,listener.invoked);
+        list.addAll(Arrays.asList(new String[]{"c", "d"}));
+        assertEquals(3,listener.invoked);
+        list.addAll(1,Arrays.asList(new String[]{"e", "f"}));
+        assertEquals(4,listener.invoked);
+        list.set(0,"g");
+        assertEquals(5,listener.invoked);
+        ListIterator<String> i = list.listIterator();
+        i.add("h");
+        assertEquals(6,listener.invoked);
+        i.next();
+        i.set("i");
+        assertEquals(7,listener.invoked);
+    }
+
+    private static class ArrayListListener implements Runnable {
+
+        int invoked;
+
+        @Override
+        public void run() {
+            invoked++;
+        }
+
+    }
+
+}