diff -r 000000000000 -r 77b6002451c4 samples/codeinjection/test/org/apidesign/codeinjection/Version20Test.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/samples/codeinjection/test/org/apidesign/codeinjection/Version20Test.java	Sat Jan 10 21:29:22 2009 +0100
@@ -0,0 +1,52 @@
+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package org.apidesign.codeinjection;
+
+import org.apidesign.codeinjection.spi.CountDownExtender;
+import org.junit.Test;
+import org.netbeans.junit.MockServices;
+import static org.junit.Assert.*;
+
+/** Final count down test.
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public class Version20Test {
+
+    public Version20Test() {
+    }
+
+    /** creates version 2.0 */
+    private static CountDown create(int value) {
+        return new CountDownImplV2(value);
+    }
+
+    @Test
+    public void testDecrementFourTimes() {
+        MockServices.setServices();
+        CountDown counter = create(4);
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertTrue("Down now", counter.isDown());
+    }
+
+    @Test
+    public void testDecrementTwoTimesEnough() {
+        MockServices.setServices(DecrementByTwo.class);
+        CountDown counter = create(4);
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertFalse("Not down yet", counter.isDown()); counter.down();
+        assertTrue("Two Down is enough", counter.isDown());
+    }
+
+    public static final class DecrementByTwo implements CountDownExtender {
+        public int decrement(int value) {
+            return value - 2;
+        }
+    }
+}
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