diff --git a/core/api/pom.xml b/core/api/pom.xml
index 3fd8a01..4229da7 100644
--- a/core/api/pom.xml
+++ b/core/api/pom.xml
@@ -21,10 +21,6 @@
             <groupId>com.google.guava</groupId>
             <artifactId>guava-testlib</artifactId>
         </dependency>
-        <dependency>
-            <groupId>org.onlab.onos</groupId>
-            <artifactId>onlab-misc</artifactId>
-        </dependency>
     </dependencies>
 
 </project>
diff --git a/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java b/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java
new file mode 100644
index 0000000..c0cce92
--- /dev/null
+++ b/core/api/src/test/java/org/onlab/onos/event/AbstractEventAccumulatorTest.java
@@ -0,0 +1,83 @@
+package org.onlab.onos.event;
+
+import org.junit.Test;
+
+import java.util.List;
+import java.util.Timer;
+
+import static org.junit.Assert.*;
+import static org.onlab.junit.TestTools.delay;
+import static org.onlab.onos.event.TestEvent.Type.FOO;
+
+/**
+ * Tests the operation of the accumulator.
+ */
+public class AbstractEventAccumulatorTest {
+
+    private final Timer timer = new Timer();
+
+    @Test
+    public void basics() throws Exception {
+        TestAccumulator accumulator = new TestAccumulator();
+        assertEquals("incorrect timer", timer, accumulator.timer());
+        assertEquals("incorrect max events", 5, accumulator.maxEvents());
+        assertEquals("incorrect max ms", 100, accumulator.maxBatchMillis());
+        assertEquals("incorrect idle ms", 50, accumulator.maxIdleMillis());
+    }
+
+    @Test
+    public void eventTrigger() {
+        TestAccumulator accumulator = new TestAccumulator();
+        accumulator.add(new TestEvent(FOO, "a"));
+        accumulator.add(new TestEvent(FOO, "b"));
+        accumulator.add(new TestEvent(FOO, "c"));
+        accumulator.add(new TestEvent(FOO, "d"));
+        assertTrue("should not have fired yet", accumulator.batch.isEmpty());
+        accumulator.add(new TestEvent(FOO, "e"));
+        delay(10);
+        assertFalse("should have fired", accumulator.batch.isEmpty());
+        assertEquals("incorrect batch", "abcde", accumulator.batch);
+    }
+
+    @Test
+    public void timeTrigger() {
+        TestAccumulator accumulator = new TestAccumulator();
+        accumulator.add(new TestEvent(FOO, "a"));
+        delay(40);
+        assertTrue("should not have fired yet", accumulator.batch.isEmpty());
+        accumulator.add(new TestEvent(FOO, "b"));
+        delay(40);
+        assertTrue("should not have fired yet", accumulator.batch.isEmpty());
+        accumulator.add(new TestEvent(FOO, "c"));
+        delay(40);
+        assertFalse("should have fired", accumulator.batch.isEmpty());
+        assertEquals("incorrect batch", "abc", accumulator.batch);
+    }
+
+    @Test
+    public void idleTrigger() {
+        TestAccumulator accumulator = new TestAccumulator();
+        accumulator.add(new TestEvent(FOO, "a"));
+        assertTrue("should not have fired yet", accumulator.batch.isEmpty());
+        accumulator.add(new TestEvent(FOO, "b"));
+        delay(80);
+        assertFalse("should have fired", accumulator.batch.isEmpty());
+        assertEquals("incorrect batch", "ab", accumulator.batch);
+    }
+
+    private class TestAccumulator extends AbstractEventAccumulator {
+
+        String batch = "";
+
+        protected TestAccumulator() {
+            super(timer, 5, 100, 50);
+        }
+
+        @Override
+        public void processEvents(List<Event> events) {
+            for (Event event : events) {
+                batch += event.subject();
+            }
+        }
+    }
+}