SplitterThrowExceptionInExpressionTest.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.camel.issues;

import org.apache.camel.ContextTestSupport;
import org.apache.camel.Exchange;
import org.apache.camel.Expression;
import org.apache.camel.ExpressionEvaluationException;
import org.apache.camel.builder.RouteBuilder;

/**
 * @version 
 */
public class SplitterThrowExceptionInExpressionTest extends ContextTestSupport {

    public void testSplitterAndVerifyMock() throws Exception {
        getMockEndpoint("mock:error").expectedMessageCount(0);
        getMockEndpoint("mock:error2").expectedMessageCount(1);
        getMockEndpoint("mock:split").expectedMessageCount(0);
        getMockEndpoint("mock:result").expectedMessageCount(0);

        template.sendBody("direct:start", "A,B,C");

        assertMockEndpointsSatisfied();
    }

    @Override
    protected RouteBuilder createRouteBuilder() throws Exception {
        return new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                onException(ExpressionEvaluationException.class)
                        .handled(true).to("mock://error");

                from("direct://start")
                    .onException(ExpressionEvaluationException.class)
                        .handled(true).to("mock://error2")
                    .end()
                    .split(new MyExpression())
                        .to("mock://split")
                    .end()
                    .to("log:result");
            }
        };
    }

    private static class MyExpression implements Expression {

        public <T> T evaluate(Exchange exchange, Class<T> type) {
            // force an exception early, to test that the onException error handlers
            // can kick in anyway
            throw new ExpressionEvaluationException(null, exchange, null);
        }
    }
}