Adding NOOP sources support

In addition, Noop* classes have been refactored to
increase code reuse and clean some checkstyle issues.
Additional Junits have been added for existing functionality.

Change-Id: I072f9ff2f415630ac82eca949a8360249f73da86
Issue-ID: POLICY-1397
Signed-off-by: Jorge Hernandez <jorge.hernandez-herrero@att.com>

1 files changed, 117 insertions, 0 deletions

diff --git a/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/event/comm/bus/NoopTopicEndpointTest.java b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/event/comm/bus/NoopTopicEndpointTest.java
new file mode 100644
index 00000000..5bbc80cd
--- /dev/null
+++ b/policy-endpoints/src/test/java/org/onap/policy/common/endpoints/event/comm/bus/NoopTopicEndpointTest.java
@@ -0,0 +1,117 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP
+ * ================================================================================
+ * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
+ * ================================================================================
+ * 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.policy.common.endpoints.event.comm.bus;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertSame;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+
+import java.util.Arrays;
+import java.util.Collections;
+import org.junit.Before;
+import org.junit.Test;
+import org.onap.policy.common.endpoints.event.comm.Topic.CommInfrastructure;
+import org.onap.policy.common.endpoints.event.comm.TopicListener;
+
+public abstract class NoopTopicEndpointTest<F extends NoopTopicFactory<T>, T extends NoopTopicEndpoint>
+    extends TopicTestBase {
+
+    protected final F factory;
+    protected T endpoint;
+
+    protected abstract boolean io(String message);
+
+    public NoopTopicEndpointTest(F factory) {
+        this.factory = factory;
+    }
+
+    @Before
+    public void setUp() {
+        super.setUp();
+        this.endpoint = this.factory.build(servers, MY_TOPIC);
+    }
+
+    @Test
+    public void tesIo() {
+        TopicListener listener = mock(TopicListener.class);
+        this.endpoint.register(listener);
+        this.endpoint.start();
+
+        assertTrue(io(MY_MESSAGE));
+        assertSame(MY_MESSAGE, this.endpoint.getRecentEvents()[0]);
+        assertEquals(Collections.singletonList(MY_MESSAGE), Arrays.asList(this.endpoint.getRecentEvents()));
+        verify(listener).onTopicEvent(CommInfrastructure.NOOP, MY_TOPIC, MY_MESSAGE);
+
+        this.endpoint.unregister(listener);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIoNullMessage() {
+        io(null);
+    }
+
+    @Test(expected = IllegalArgumentException.class)
+    public void testIoEmptyMessage() {
+        io("");
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testOfferNotStarted() {
+        io(MY_MESSAGE);
+    }
+
+    @Test
+    public void testGetTopicCommInfrastructure() {
+        assertEquals(CommInfrastructure.NOOP, this.endpoint.getTopicCommInfrastructure());
+    }
+
+    @Test
+    public void testStart_testStop_testShutdown() {
+        this.endpoint.start();
+        assertTrue(this.endpoint.isAlive());
+
+        // start again
+        this.endpoint.start();
+        assertTrue(this.endpoint.isAlive());
+
+        // stop
+        this.endpoint.stop();
+        assertFalse(this.endpoint.isAlive());
+
+        // re-start again
+        this.endpoint.start();
+        assertTrue(this.endpoint.isAlive());
+
+        // shutdown
+        this.endpoint.shutdown();
+        assertFalse(this.endpoint.isAlive());
+    }
+
+    @Test(expected = IllegalStateException.class)
+    public void testStart_Locked() {
+        this.endpoint.lock();
+        this.endpoint.start();
+    }
+
+}