Unit tests to improve coverage

- DefaultPacketRequest
- PacketEventTest
- PacketProcessor

Change-Id: I86d1416f808ebc901ed84204f2e772dc25f9eb58
diff --git a/core/api/src/test/java/org/onosproject/net/packet/PacketEventTest.java b/core/api/src/test/java/org/onosproject/net/packet/PacketEventTest.java
new file mode 100644
index 0000000..f0d45f0
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/net/packet/PacketEventTest.java
@@ -0,0 +1,51 @@
+/*
+ * Copyright 2015 Open Networking Laboratory
+ *
+ * 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.onosproject.net.packet;
+
+import org.junit.Test;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.greaterThanOrEqualTo;
+import static org.hamcrest.Matchers.is;
+
+/**
+ * Unit tests for PacketEvent class.
+ */
+public class PacketEventTest {
+
+    OutboundPacket packet;
+
+    @Test
+    public void testConstruction1() {
+        long time = System.currentTimeMillis();
+        PacketEvent event = new PacketEvent(PacketEvent.Type.EMIT, packet);
+
+        assertThat(event.type(), is(PacketEvent.Type.EMIT));
+        assertThat(event.subject(), is(packet));
+        assertThat(event.time(), greaterThanOrEqualTo(time));
+    }
+
+    @Test
+    public void testConstruction2() {
+        long time = 12345678;
+        PacketEvent event = new PacketEvent(PacketEvent.Type.EMIT, packet, time);
+
+        assertThat(event.type(), is(PacketEvent.Type.EMIT));
+        assertThat(event.subject(), is(packet));
+        assertThat(event.time(), is(time));
+    }
+
+}