components/camel-elsql/src/test/java/org/apache/camel/component/elsql/ElSqlProducerStreamListTest.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
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package org.apache.camel.component.elsql;

import java.util.Iterator;
import java.util.Map;

import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.component.mock.MockEndpoint;
import org.apache.camel.impl.JndiRegistry;
import org.apache.camel.test.junit4.CamelTestSupport;
import org.junit.After;
import org.junit.Test;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabase;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;

import static org.hamcrest.CoreMatchers.instanceOf;

public class ElSqlProducerStreamListTest extends CamelTestSupport {

    private EmbeddedDatabase db;

    @Override
    protected JndiRegistry createRegistry() throws Exception {
        JndiRegistry jndi = super.createRegistry();

        // this is the database we create with some initial data for our unit test
        db = new EmbeddedDatabaseBuilder()
                .setType(EmbeddedDatabaseType.DERBY).addScript("sql/createAndPopulateDatabase.sql").build();

        jndi.bind("dataSource", db);

        return jndi;
    }

    @Test
    public void testReturnAnIterator() throws Exception {
        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(1);

        template.sendBody("direct:start", "testmsg");

        mock.assertIsSatisfied();
        assertThat(resultBodyAt(mock, 0), instanceOf(Iterator.class));
    }

    @Test
    public void testSplit() throws Exception {
        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(3);

        template.sendBody("direct:withSplit", "testmsg");

        mock.assertIsSatisfied();
        assertThat(resultBodyAt(mock, 0), instanceOf(Map.class));
        assertThat(resultBodyAt(mock, 1), instanceOf(Map.class));
        assertThat(resultBodyAt(mock, 2), instanceOf(Map.class));
    }

    @Test
    public void testSplitWithModel() throws Exception {
        MockEndpoint mock = getMockEndpoint("mock:result");
        mock.expectedMessageCount(3);

        template.sendBody("direct:withSplitModel", "testmsg");

        mock.assertIsSatisfied();
        assertThat(resultBodyAt(mock, 0), instanceOf(Project.class));
        assertThat(resultBodyAt(mock, 1), instanceOf(Project.class));
        assertThat(resultBodyAt(mock, 2), instanceOf(Project.class));
    }

    private Object resultBodyAt(MockEndpoint result, int index) {
        return result.assertExchangeReceived(index).getIn().getBody();
    }

    @After
    public void tearDown() throws Exception {
        super.tearDown();

        db.shutdown();
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            public void configure() {
                getContext().getComponent("elsql", ElsqlComponent.class).setDataSource(db);

                from("direct:start")
                    .to("elsql:allProjects:elsql/projects.elsql?outputType=StreamList")
                    .to("log:stream")
                    .to("mock:result");

                from("direct:withSplit")
                    .to("elsql:allProjects:elsql/projects.elsql?outputType=StreamList")
                    .to("log:stream")
                    .split(body()).streaming()
                        .to("log:row")
                        .to("mock:result")
                    .end();

                from("direct:withSplitModel")
                    .to("elsql:allProjects:elsql/projects.elsql?outputType=StreamList&outputClass=org.apache.camel.component.elsql.Project")
                    .to("log:stream")
                    .split(body()).streaming()
                        .to("log:row")
                        .to("mock:result")
                    .end();
            }
        };
    }
}