nifi-nar-bundles/nifi-azure-bundle/nifi-azure-processors/src/test/org/apache/nifi/processors/azure/eventhub/PutAzureEventHubTest.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.nifi.processors.azure.eventhub;

import com.microsoft.azure.eventhubs.EventHubClient;
import org.apache.nifi.processor.exception.ProcessException;
import org.apache.nifi.util.TestRunner;
import org.apache.nifi.util.TestRunners;
import org.junit.Before;
import org.junit.Test;

public class PutAzureEventHubTest {
    private static final String namespaceName = "nifi-azure-hub";
    private static final String eventHubName = "get-test";
    private static final String sasKeyName = "bogus-policy";
    private static final String sasKey = "9rHmHqxoOVWOb8wS09dvqXYxnNiLqxNMCbmt6qMaQyU!";


    private TestRunner testRunner;
    private PutAzureEventHubTest.MockPutAzureEventHub processor;

    @Before
    public void setUp() throws Exception {
        processor = new PutAzureEventHubTest.MockPutAzureEventHub();
        testRunner = TestRunners.newTestRunner(processor);
    }
    @Test
    public void testProcessorConfigValidity() {
        testRunner.setProperty(PutAzureEventHub.EVENT_HUB_NAME,eventHubName);
        testRunner.assertNotValid();
        testRunner.setProperty(PutAzureEventHub.NAMESPACE,namespaceName);
        testRunner.assertNotValid();
        testRunner.setProperty(PutAzureEventHub.ACCESS_POLICY,sasKeyName);
        testRunner.assertNotValid();
        testRunner.setProperty(PutAzureEventHub.POLICY_PRIMARY_KEY,sasKey);
        testRunner.assertValid();
    }
    @Test
    public void verifyRelationships(){

        assert(2 == processor.getRelationships().size());

    }
    @Test
    public void testNoFlow() {

        setUpStandardTestConfig();
        testRunner.run(1, true);
        testRunner.assertAllFlowFilesTransferred(PutAzureEventHub.REL_SUCCESS, 0);
        testRunner.clearTransferState();
    }
    @Test
    public void testNormalFlow(){

        setUpStandardTestConfig();
        String flowFileContents = "TEST MESSAGE";
        testRunner.enqueue(flowFileContents);
        testRunner.run(1, true);
        assert(flowFileContents.contentEquals(new String(processor.getReceivedBuffer())));
        testRunner.assertAllFlowFilesTransferred(PutAzureEventHub.REL_SUCCESS, 1);
        testRunner.clearTransferState();
    }
    @Test
    public void testSendMessageThrows() {

        PutAzureEventHubTest.OnSendThrowingMockPutAzureEventHub throwingProcessor = new PutAzureEventHubTest.OnSendThrowingMockPutAzureEventHub();
        testRunner = TestRunners.newTestRunner(throwingProcessor);
        setUpStandardTestConfig();
        String flowFileContents = "TEST MESSAGE";
        testRunner.enqueue(flowFileContents);
        testRunner.run(1, true);
        testRunner.assertAllFlowFilesTransferred(PutAzureEventHub.REL_FAILURE);
        testRunner.clearTransferState();
    }

    @Test(expected = AssertionError.class)
    public void testBadConnectionString() {

        PutAzureEventHubTest.BogusConnectionStringMockPutAzureEventHub badConnectionStringProcessor = new PutAzureEventHubTest.BogusConnectionStringMockPutAzureEventHub();
        testRunner = TestRunners.newTestRunner(badConnectionStringProcessor);
        setUpStandardTestConfig();
        testRunner.run(1, true);
    }

    private static class MockPutAzureEventHub extends PutAzureEventHub{

        byte[] receivedBuffer = null;
        byte[] getReceivedBuffer(){return receivedBuffer;}

        @Override
        protected EventHubClient createEventHubClient(final String namespace, final String eventHubName, final String policyName, final String policyKey) throws ProcessException {
            return null;
        }

        @Override
        protected void sendMessage(final byte[] buffer) throws ProcessException {
            receivedBuffer = buffer;
        }
    }
    private static class OnSendThrowingMockPutAzureEventHub extends PutAzureEventHub{
        @Override
        protected EventHubClient createEventHubClient(final String namespace, final String eventHubName, final String policyName, final String policyKey) throws ProcessException {
            return null;
        }
    }
    private static class BogusConnectionStringMockPutAzureEventHub extends PutAzureEventHub{

        @Override
        protected String getConnectionString(final String namespace, final String eventHubName, final String policyName, final String policyKey){
            return "Bogus Connection String";
        }
    }
    private void setUpStandardTestConfig() {
        testRunner.setProperty(PutAzureEventHub.EVENT_HUB_NAME,eventHubName);
        testRunner.setProperty(PutAzureEventHub.NAMESPACE,namespaceName);
        testRunner.setProperty(PutAzureEventHub.ACCESS_POLICY,sasKeyName);
        testRunner.setProperty(PutAzureEventHub.POLICY_PRIMARY_KEY,sasKey);
        testRunner.assertValid();
    }
}