Improve test coverage for ConsistentMapEvent and WallClockTimestamp

Change-Id: Id8276966c227e2a66d40fca9ac43145b8a419982
diff --git a/core/api/src/test/java/org/onosproject/store/service/EventuallyConsistentMapEventTest.java b/core/api/src/test/java/org/onosproject/store/service/EventuallyConsistentMapEventTest.java
new file mode 100644
index 0000000..ac8e7b5
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/store/service/EventuallyConsistentMapEventTest.java
@@ -0,0 +1,78 @@
+/*
+ * 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.store.service;
+
+import org.junit.Test;
+
+import com.google.common.testing.EqualsTester;
+
+import static org.hamcrest.MatcherAssert.assertThat;
+import static org.hamcrest.Matchers.is;
+import static org.onlab.junit.ImmutableClassChecker.assertThatClassIsImmutable;
+import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.PUT;
+import static org.onosproject.store.service.EventuallyConsistentMapEvent.Type.REMOVE;
+
+/**
+ * Unit tests for the EventuallyConsistentMapEvent class.
+ */
+public class EventuallyConsistentMapEventTest {
+
+    EventuallyConsistentMapEvent<String, String> event1 =
+            new EventuallyConsistentMapEvent<>("map1", PUT, "k1", "v1");
+    EventuallyConsistentMapEvent<String, String> event2 =
+            new EventuallyConsistentMapEvent<>("map1", REMOVE, "k1", "v1");
+    EventuallyConsistentMapEvent<String, String> sameAsEvent2 =
+            new EventuallyConsistentMapEvent<>("map1", REMOVE, "k1", "v1");
+    EventuallyConsistentMapEvent<String, String> event3 =
+            new EventuallyConsistentMapEvent<>("map1", PUT, "k2", "v1");
+    EventuallyConsistentMapEvent<String, String> event4 =
+            new EventuallyConsistentMapEvent<>("map1", PUT, "k1", "v2");
+    EventuallyConsistentMapEvent<String, String> event5 =
+            new EventuallyConsistentMapEvent<>("map2", REMOVE, "k1", "v2");
+
+    /**
+     * Checks the equals(), hashCode() and toString() operations.
+     */
+    @Test
+    public void testEquals() {
+        new EqualsTester()
+                .addEqualityGroup(event1)
+                .addEqualityGroup(event2, sameAsEvent2)
+                .addEqualityGroup(event3)
+                .addEqualityGroup(event4)
+                .addEqualityGroup(event5)
+                .testEquals();
+    }
+
+    /**
+     * Checks that the EventuallyConsistentMapEvent class is immutable.
+     */
+    @Test
+    public void testImmutability() {
+        assertThatClassIsImmutable(EventuallyConsistentMapEvent.class);
+    }
+
+    /**
+     * Checks that construction of the object is correct.
+     */
+    @Test
+    public void testConstruction() {
+        assertThat(event1.type(), is(PUT));
+        assertThat(event1.key(), is("k1"));
+        assertThat(event1.value(), is("v1"));
+        assertThat(event1.name(), is("map1"));
+    }
+}
diff --git a/core/api/src/test/java/org/onosproject/store/service/WallClockTimestampTest.java b/core/api/src/test/java/org/onosproject/store/service/WallClockTimestampTest.java
new file mode 100644
index 0000000..97f5a39
--- /dev/null
+++ b/core/api/src/test/java/org/onosproject/store/service/WallClockTimestampTest.java
@@ -0,0 +1,66 @@
+/*
+ * 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.store.service;
+
+import static org.junit.Assert.assertTrue;
+
+import java.nio.ByteBuffer;
+
+import org.junit.Test;
+import org.onosproject.store.Timestamp;
+import org.onlab.util.KryoNamespace;
+
+import com.google.common.testing.EqualsTester;
+
+/**
+ * Tests for {@link WallClockTimestamp}.
+ */
+public class WallClockTimestampTest {
+
+    @Test
+    public final void testBasic() throws InterruptedException {
+        WallClockTimestamp ts1 = new WallClockTimestamp();
+        Thread.sleep(50);
+        WallClockTimestamp ts2 = new WallClockTimestamp();
+        long stamp = System.currentTimeMillis() + 10000;
+        WallClockTimestamp ts3 = new WallClockTimestamp(stamp);
+
+
+        assertTrue(ts1.compareTo(ts1) == 0);
+        assertTrue(ts2.compareTo(ts1) > 0);
+        assertTrue(ts1.compareTo(ts2) < 0);
+        assertTrue(ts3.unixTimestamp() == stamp);
+    }
+
+    @Test
+    public final void testKryoSerializable() {
+        WallClockTimestamp ts1 = new WallClockTimestamp();
+        WallClockTimestamp ts2 = new WallClockTimestamp(System.currentTimeMillis() + 10000);
+        final ByteBuffer buffer = ByteBuffer.allocate(1 * 1024 * 1024);
+        final KryoNamespace kryos = KryoNamespace.newBuilder()
+                .register(WallClockTimestamp.class)
+                .build();
+
+        kryos.serialize(ts1, buffer);
+        buffer.flip();
+        Timestamp copy = kryos.deserialize(buffer);
+
+        new EqualsTester()
+                .addEqualityGroup(ts1, copy)
+                .addEqualityGroup(ts2)
+                .testEquals();
+    }
+}