integrations/apache-camel/src/test/java/org/apache/plc4x/camel/Plc4XProducerTest.java

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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

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package org.apache.plc4x.camel;

import org.apache.camel.Exchange;
import org.apache.camel.ExchangePattern;
import org.apache.plc4x.java.PlcDriverManager;
import org.apache.plc4x.java.api.PlcConnection;
import org.apache.plc4x.java.api.messages.PlcWriteRequest;
import org.junit.Before;
import org.junit.Test;

import java.lang.reflect.Field;
import java.util.Arrays;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

import static org.mockito.Mockito.*;

public class Plc4XProducerTest {

    private Plc4XProducer SUT;

    private Exchange testExchange;

    @Before
    public void setUp() throws Exception {
        Plc4XEndpoint endpointMock = mock(Plc4XEndpoint.class, RETURNS_DEEP_STUBS);
        when(endpointMock.getEndpointUri()).thenReturn("plc4x:mock:10.10.10.1/1/1");
        PlcDriverManager plcDriverManagerMock = mock(PlcDriverManager.class, RETURNS_DEEP_STUBS);

        when(plcDriverManagerMock.getConnection(anyString()).getMetadata().canRead()).thenReturn(true);
        when(plcDriverManagerMock.getConnection(anyString()).getMetadata().canWrite()).thenReturn(true);
        when(plcDriverManagerMock.getConnection(anyString()).writeRequestBuilder())
            .thenReturn(mock(PlcWriteRequest.Builder.class, RETURNS_DEEP_STUBS));

        when(endpointMock.getPlcDriverManager()).thenReturn(plcDriverManagerMock);
        SUT = new Plc4XProducer(endpointMock);
        testExchange = mock(Exchange.class, RETURNS_DEEP_STUBS);
        when(testExchange.getIn().getHeader(eq(Constants.FIELD_NAME_HEADER), eq(String.class)))
            .thenReturn("Hurz");
        when(testExchange.getIn().getHeader(eq(Constants.FIELD_QUERY_HEADER), eq(String.class)))
            .thenReturn("PlcField.class");
    }

    @Test
    public void process() throws Exception {
        when(testExchange.getPattern()).thenReturn(ExchangePattern.InOnly);
        SUT.process(testExchange);
        when(testExchange.getPattern()).thenReturn(ExchangePattern.InOut);
        SUT.process(testExchange);
        when(testExchange.getPattern()).thenReturn(ExchangePattern.OutOnly);
        SUT.process(testExchange);
        when(testExchange.getIn().getBody()).thenReturn(Arrays.asList("test","test"));
        when(testExchange.getIn().getBody(eq(List.class))).thenReturn(Arrays.asList("test","test"));
        SUT.process(testExchange);
    }

    @Test
    public void process_Async() {
        SUT.process(testExchange, doneSync -> {
        });
        when(testExchange.getPattern()).thenReturn(ExchangePattern.InOnly);
        SUT.process(testExchange, doneSync -> {
        });
        when(testExchange.getPattern()).thenReturn(ExchangePattern.InOut);
        SUT.process(testExchange, doneSync -> {
        });
        when(testExchange.getPattern()).thenReturn(ExchangePattern.OutOnly);
        SUT.process(testExchange, doneSync -> {
        });
    }

    @Test
    public void doStop() throws Exception {
        SUT.doStop();
    }

    @Test
    public void doStopOpenRequest() throws Exception {
        Field openRequests = SUT.getClass().getDeclaredField("openRequests");
        openRequests.setAccessible(true);
        AtomicInteger atomicInteger = (AtomicInteger) openRequests.get(SUT);
        atomicInteger.incrementAndGet();
        SUT.doStop();
    }

    @Test
    public void doStopBadConnection() throws Exception {
        Field openRequests = SUT.getClass().getDeclaredField("plcConnection");
        openRequests.setAccessible(true);
        PlcConnection plcConnectionMock = mock(PlcConnection.class);
        doThrow(new RuntimeException("oh noes")).when(plcConnectionMock).close();
        openRequests.set(SUT, plcConnectionMock);
        SUT.doStop();
    }

}