RCodeProducerAssignExpressionTest.java

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package org.apacheextras.camel.component.rcode;

import java.util.HashMap;
import java.util.Map;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.junit.Test;
import org.mockito.invocation.InvocationOnMock;
import org.mockito.stubbing.Answer;
import org.rosuda.REngine.REXP;
import org.rosuda.REngine.REXPString;

import static org.mockito.Mockito.doAnswer;

public class RCodeProducerAssignExpressionTest extends RCodeProducerTest {

    @Test
    public void sendAssignExpressionTest() throws Exception {
        final Map<String, REXP> assignments = new HashMap<String, REXP>();
        assignments.put("x", new REXPString("2^2"));
        final Object obj = null;
        final MockEndpoint mockEndpoint = getMockEndpoint("mock:rcode");
        mockEndpoint.expectedBodiesReceived(obj);

        for (Map.Entry<String, REXP> assignment : assignments.entrySet()) {
            doAnswer(new Answer<Void>() {
                @Override
                public Void answer(InvocationOnMock invocation) {
                    return null;
                }
            }).when(rConnection).assign(assignment.getKey(), assignment.getValue());
            template.sendBody("direct:rcode", assignment);
        }

        mockEndpoint.assertIsSatisfied();

    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                // Handle exceptions by sending the exceptions to the mock
                // endpoint
                onException(Exception.class).handled(true).to("mock:error");
                // Send commands to the RCode endpoint, operation is
                // 'assign_expression'
                from("direct:rcode").to("rcode:localhost:6311/assign_expression?user=test&password=test123&bufferSize=10").to("mock:rcode");
            }
        };
    }
}