dcae-analytics-common/src/test/java/org/openecomp/dcae/apod/analytics/common/service/processor/GenericMessageChainProcessorTest.java

   1 /*
   2  * ===============================LICENSE_START======================================
   3  *  dcae-analytics
   4  * ================================================================================
   5  *    Copyright © 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  *  Licensed under the Apache License, Version 2.0 (the "License");
   8  *  you may not use this file except in compliance with the License.
   9  *   You may obtain a copy of the License at
  10  *
  11  *          http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  *  Unless required by applicable law or agreed to in writing, software
  14  *  distributed under the License is distributed on an "AS IS" BASIS,
  15  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  *  See the License for the specific language governing permissions and
  17  *  limitations under the License.
  18  *  ============================LICENSE_END===========================================
  19  */
  20
  21 package org.openecomp.dcae.apod.analytics.common.service.processor;
  22
  23 import com.google.common.collect.ImmutableList;
  24 import org.junit.Test;
  25 import org.openecomp.dcae.apod.analytics.common.BaseAnalyticsCommonUnitTest;
  26 import org.openecomp.dcae.apod.analytics.common.exception.MessageProcessingException;
  27
  28 import static org.hamcrest.CoreMatchers.is;
  29 import static org.junit.Assert.assertNull;
  30 import static org.junit.Assert.assertThat;
  31
  32
  33 /**
  34  *
  35  * @author Rajiv Singla . Creation Date: 11/8/2016.
  36  */
  37 public class GenericMessageChainProcessorTest extends BaseAnalyticsCommonUnitTest {
  38
  39
  40     @Test
  41     public void testProcessChainWhenProcessChainHasNoEarlyTermination() throws Exception {
  42
  43         final TestMessageProcessor1 testMessageProcessor1 = getTestMessageProcessor1();
  44         final TestMessageProcessor2 testMessageProcessor2 = getTestMessageProcessor2();
  45         final ImmutableList<? extends MessageProcessor<TestProcessorContext>> testMessageChain =
  46                 ImmutableList.of(testMessageProcessor1, testMessageProcessor2);
  47
  48         final TestProcessorContext testProcessorContext = new TestProcessorContext("Hello", true);
  49
  50         final GenericMessageChainProcessor<TestProcessorContext> genericMessageChainProcessor =
  51                 new GenericMessageChainProcessor<>(testMessageChain, testProcessorContext);
  52
  53         final TestProcessorContext finalProcessorContext = genericMessageChainProcessor.processChain();
  54
  55         final String result = finalProcessorContext.getResult();
  56         assertThat("Final Result must be Hello World! Again", result, is("Hello World! Again"));
  57         assertThat("TestProcessor1 state is correct", testMessageProcessor1.getProcessingState(),
  58                 is(ProcessingState.PROCESSING_FINISHED_SUCCESSFULLY));
  59         assertThat("TestProcessor2 state is correct", testMessageProcessor2.getProcessingState(),
  60                 is(ProcessingState.PROCESSING_FINISHED_SUCCESSFULLY));
  61     }
  62
  63
  64     @Test
  65     public void testProcessChainWhenProcessChainEarlyTermination() throws Exception {
  66
  67         final TestEarlyTerminatingProcessor testEarlyTerminatingProcessor = getTestEarlyTerminationProcessor();
  68         final ImmutableList<? extends MessageProcessor<TestProcessorContext>> testMessageChain =
  69                 ImmutableList.of(testEarlyTerminatingProcessor, getTestMessageProcessor2());
  70         final TestProcessorContext testProcessorContext = new TestProcessorContext("Hello", true);
  71
  72         final GenericMessageChainProcessor<TestProcessorContext> genericMessageChainProcessor =
  73                 new GenericMessageChainProcessor<>(testMessageChain, testProcessorContext);
  74
  75         final TestProcessorContext finalProcessorContext = genericMessageChainProcessor.processChain();
  76         final String result = finalProcessorContext.getResult();
  77         assertNull("Final Result must be null", result);
  78         assertThat("TestEarlyTerminatingProcessor state is correct",
  79                 testEarlyTerminatingProcessor.getProcessingState(), is(ProcessingState.PROCESSING_TERMINATED_EARLY));
  80     }
  81
  82     @Test(expected = MessageProcessingException.class)
  83     public void testProcessChainWhenIncomingMessageContextIsNull() throws Exception {
  84
  85         final TestEarlyTerminatingProcessor testEarlyTerminatingProcessor = getTestEarlyTerminationProcessor();
  86         final ImmutableList<? extends MessageProcessor<TestProcessorContext>> testMessageChain =
  87                 ImmutableList.of(testEarlyTerminatingProcessor, getTestMessageProcessor2());
  88         final TestProcessorContext testProcessorContext = null;
  89
  90         final GenericMessageChainProcessor<TestProcessorContext> genericMessageChainProcessor =
  91                 new GenericMessageChainProcessor<>(testMessageChain, testProcessorContext);
  92
  93        genericMessageChainProcessor.processChain();
  94     }
  95
  96 }