From 81ad515289250e8e9d14989c844363c76edbe27b Mon Sep 17 00:00:00 2001
From: Arnel Pajarillo <ap1541@att.com>
Date: Sat, 31 Mar 2018 11:12:28 -0400
Subject: [PATCH] Add junit coverage to TimerServiceImpl class.

Introduce junit test for client-lib's TimerService.java.

Change-Id: I3f8947cd526dc6a62ddcd2ced189565a401c6353
Issue-ID: APPC-815
Signed-off-by: Arnel Pajarillo <ap1541@att.com>
---
 .../client/impl/core/TimerServiceImplTest.java     | 94 ++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 appc-client/client-lib/src/test/java/org/onap/appc/client/impl/core/TimerServiceImplTest.java

diff --git a/appc-client/client-lib/src/test/java/org/onap/appc/client/impl/core/TimerServiceImplTest.java b/appc-client/client-lib/src/test/java/org/onap/appc/client/impl/core/TimerServiceImplTest.java
new file mode 100644
index 000000000..b8ee11d78
--- /dev/null
+++ b/appc-client/client-lib/src/test/java/org/onap/appc/client/impl/core/TimerServiceImplTest.java
@@ -0,0 +1,94 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright 2018 AT&T
+ * =================================================================================
+ * 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.
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.client.impl.core;
+
+import static org.junit.Assert.assertTrue;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class TimerServiceImplTest {
+
+    private static TimerServiceImpl ts = new TimerServiceImpl(100);
+    private static TimeoutHandlerImpl handler1;
+    private static TimeoutHandlerImpl handler2;
+    private static TimeoutHandlerImpl handler3;
+    
+    @BeforeClass
+    public static void setUpBeforeClass() throws Exception {
+        handler1 = new TimeoutHandlerImpl();
+        ts.add("1", handler1);
+        ts.cancel("1");
+
+        handler2 = new TimeoutHandlerImpl();
+        ts.add("2", handler2);
+
+        handler3 = new TimeoutHandlerImpl();
+        ts.add("3", handler3);
+    }
+    
+    @AfterClass
+    public static void cleanupAfterClass() throws Exception {
+        ts.shutdown();
+    }
+
+    @Test
+    public void testCancelledTimer() {
+        assertTrue("TimerServiceImpl cancel failed!", handler1.getLatch().getCount() == 1);
+    }
+
+    @Test
+    public void testTimeoutActionPerformed() throws InterruptedException {
+        handler2.getLatch().await(2, TimeUnit.SECONDS);
+        assertTrue("TimerServiceImpl timeout action not performed!", handler2.getLatch().getCount() == 0);
+    }
+
+    @Test
+    public void testLateCancel() throws InterruptedException {
+        TimeUnit.MILLISECONDS.sleep(300);
+        ts.cancel("3");
+        assertTrue("TimerServiceImpl late cancel - action unexpectedly performed!", handler3.getLatch().getCount() == 0);
+    }
+    
+    private static class TimeoutHandlerImpl implements ITimeoutHandler {
+
+        private CountDownLatch latch = new CountDownLatch(1);
+
+        public CountDownLatch getLatch() {
+            return latch;
+        }
+
+        /**
+         * When a timeout event is occurring, the new Timeout task will be assigned into a queue,
+         * this queue is shared between both timeout and handlers which belong to same correlation ID.
+         */
+        @Override
+        public void onTimeout() {
+            latch.countDown();
+        }
+    }
+
+
+}
-- 
2.16.6