RestProducerBindingProcessorTest.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.
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package org.apache.camel.component.rest;

import java.io.InputStream;
import java.io.OutputStream;

import org.apache.camel.AsyncCallback;
import org.apache.camel.AsyncProcessor;
import org.apache.camel.CamelContext;
import org.apache.camel.Exchange;
import org.apache.camel.Message;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.impl.DefaultExchange;
import org.apache.camel.impl.DefaultMessage;
import org.apache.camel.spi.DataFormat;
import org.easymock.Capture;
import org.easymock.EasyMock;
import org.junit.Assert;
import org.junit.Test;

import static org.easymock.EasyMock.anyObject;
import static org.easymock.EasyMock.capture;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.expectLastCall;
import static org.easymock.EasyMock.mock;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.same;
import static org.easymock.EasyMock.verify;
import static org.junit.Assert.assertTrue;

public class RestProducerBindingProcessorTest {

    public static class RequestPojo {
    }

    public static class ResponsePojo {
    }

    final AsyncCallback callback = mock(AsyncCallback.class);

    final CamelContext context = new DefaultCamelContext();
    final DataFormat jsonDataFormat = mock(DataFormat.class);
    final DataFormat outJsonDataFormat = mock(DataFormat.class);
    final DataFormat outXmlDataFormat = mock(DataFormat.class);
    final AsyncProcessor processor = mock(AsyncProcessor.class);
    final DataFormat xmlDataFormat = mock(DataFormat.class);

    @Test
    public void shouldMarshalAndUnmarshalJson() throws Exception {
        final String outType = ResponsePojo.class.getName();

        final RestProducerBindingProcessor bindingProcessor = new RestProducerBindingProcessor(processor, context,
            jsonDataFormat, xmlDataFormat, outJsonDataFormat, outXmlDataFormat, "json", true, outType);

        final Exchange exchange = new DefaultExchange(context);
        final Message input = new DefaultMessage();

        final RequestPojo request = new RequestPojo();
        input.setBody(request);
        exchange.setIn(input);

        jsonDataFormat.marshal(same(exchange), same(request), anyObject(OutputStream.class));
        expectLastCall().andVoid();

        final ResponsePojo response = new ResponsePojo();
        expect(outJsonDataFormat.unmarshal(same(exchange), anyObject(InputStream.class))).andReturn(response);

        final Capture<AsyncCallback> bindingCallback = EasyMock.newCapture();

        expect(processor.process(same(exchange), capture(bindingCallback))).andReturn(false);

        replay(jsonDataFormat, outJsonDataFormat, processor);

        bindingProcessor.process(exchange, callback);

        assertTrue(bindingCallback.hasCaptured());

        final AsyncCallback that = bindingCallback.getValue();

        that.done(false);

        verify(jsonDataFormat, outJsonDataFormat, processor);

        Assert.assertSame(response, exchange.getOut().getBody());
    }

    @Test
    public void shouldMarshalAndUnmarshalXml() throws Exception {
        final String outType = ResponsePojo.class.getName();

        final RestProducerBindingProcessor bindingProcessor = new RestProducerBindingProcessor(processor, context,
            jsonDataFormat, xmlDataFormat, outJsonDataFormat, outXmlDataFormat, "xml", true, outType);

        final Exchange exchange = new DefaultExchange(context);
        final Message input = new DefaultMessage();

        final RequestPojo request = new RequestPojo();
        input.setBody(request);
        exchange.setIn(input);

        xmlDataFormat.marshal(same(exchange), same(request), anyObject(OutputStream.class));
        expectLastCall().andVoid();

        final ResponsePojo response = new ResponsePojo();
        expect(outXmlDataFormat.unmarshal(same(exchange), anyObject(InputStream.class))).andReturn(response);

        final Capture<AsyncCallback> bindingCallback = EasyMock.newCapture();

        expect(processor.process(same(exchange), capture(bindingCallback))).andReturn(false);

        replay(xmlDataFormat, outXmlDataFormat, processor);

        bindingProcessor.process(exchange, callback);

        assertTrue(bindingCallback.hasCaptured());

        final AsyncCallback that = bindingCallback.getValue();

        that.done(false);

        verify(xmlDataFormat, outXmlDataFormat, processor);

        Assert.assertSame(response, exchange.getOut().getBody());
    }

    @Test
    public void shouldNotMarshalAndUnmarshalByDefault() throws Exception {
        final String outType = ResponsePojo.class.getName();

        final RestProducerBindingProcessor bindingProcessor = new RestProducerBindingProcessor(processor, context,
            jsonDataFormat, xmlDataFormat, outJsonDataFormat, outXmlDataFormat, "off", true, outType);

        final Exchange exchange = new DefaultExchange(context);
        final Message input = new DefaultMessage();

        final RequestPojo request = new RequestPojo();
        input.setBody(request);
        exchange.setIn(input);

        final Capture<AsyncCallback> bindingCallback = EasyMock.newCapture();

        expect(processor.process(same(exchange), capture(bindingCallback))).andReturn(false);

        replay(processor);

        bindingProcessor.process(exchange, callback);

        assertTrue(bindingCallback.hasCaptured());

        final AsyncCallback that = bindingCallback.getValue();

        that.done(false);

        verify(processor);
    }
}