How to unit test an apache camel cxfrs route? - json

Question

I have a working cxfrs route. I can hit the rest service using SoapUi with a json object and get a response.
I wanted to write unit tests, and I though to use CamelTestSupport. My routebuilder configure() method looks something like this:
from(cxfrsEndpoint)
.recipientList(simple("direct:${header.operationName}"))
.setHeader(Exchange.CONTENT_LENGTH, simple("-1"));
from("direct:submitRequest")
.bean("responseBean", "checkJson")
.bean("responseBean", "createSuccessResponse");
When I hit the url from SoapUi (http://localhost:8181/cxf/myContext/submitRequest) as a POST with an appropriate json string, I get a "success" json back. Cool.
In my unit test, I created an overriden createRouteBuilder method:
#Override
protected RouteBuilder createRouteBuilder() {
MyRouteBuilder myRouteBuilder = new MyRouteBuilder();
myRouteBuilder.setCxfrsEndpoint("direct:start");
return myRouteBuilder;
}
And then my unit test (I thought) would look something like this:
#Test
public void thisIsATest() throws Exception {
MyRequest myRequest = new MyRequest();
request.setSomeProperty("Some property value");
ObjectMapper objectMapper = new ObjectMapper();
String goodJsonRequest = objectMapper.writeValueAsString(request);
String response = (String) template.requestBodyAndHeader(START_POINT, goodJsonRequest, "operationName", "submitRequest");
assertNotNull(response);
//Omitted: further assertions for content of the response json
}
Well, when I execute the unit test, I get an unmarshalling exception with this as the cause:
Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '{' (code 123) in prolog; expected '<'
at [row,col {unknown-source}]: [1,1]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(StreamScanner.java:647)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2054)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1131)
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:164)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:415)
... 74 more
It doesn't like my json string. What is the real service receiving?
On the real route, I enabled logging on the endpoint in the blueprint.xml like this:
<!-- RouteBuilder declarations -->
<bean id="myRouteBuilder" class="com.mycompany.MyRouteBuilder">
<property name="cxfrsEndpoint" value="cxfrs:bean:cxfrsEndpoint?bindingStyle=SimpleConsumer&loggingFeatureEnabled=true" />
</bean>
The json string I see in the log as the "Payload:" doesn't look any different than the json string I'm sending via template.requestBodyAndHeader(...).
What am I missing or what am I doing wrong here?
Thanks!

Answer 1

Please, try not rewrite your endpoint like this:
myRouteBuilder.setCxfrsEndpoint("direct:start");
Seems to me that overriding your endpoint changes the interface and the CXF now is expecting a XML and not JSON (based on your logs):
Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character '{' (code 123) in prolog; expected '<'
at [row,col {unknown-source}]: [1,1]
at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(StreamScanner.java:647)
at com.ctc.wstx.sr.BasicStreamReader.nextFromProlog(BasicStreamReader.java:2054)
at com.ctc.wstx.sr.BasicStreamReader.next(BasicStreamReader.java:1131)
at com.sun.xml.bind.v2.runtime.unmarshaller.StAXStreamConnector.bridge(StAXStreamConnector.java:164)
at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:415)
... 74 more
You already have the endpoint defined in here:
<bean id="myRouteBuilder" class="com.mycompany.MyRouteBuilder">
<property name="cxfrsEndpoint" value="cxfrs:bean:cxfrsEndpoint?bindingStyle=SimpleConsumer&loggingFeatureEnabled=true" />
</bean>
My suggestion is to use this code as example and call your endpoint directly via HTTP:
public void setUp() throws Exception {
super.setUp();
httpclient = HttpClientBuilder.create().build();
}
public void tearDown() throws Exception {
super.tearDown();
httpclient.close();
}
#Test
public void testGetCustomerOnlyHeaders() throws Exception {
HttpGet get = new HttpGet("http://serviceurl.com");
HttpResponse response = httpclient.execute(get);
assertEquals(200, response.getStatusLine().getStatusCode());
}
If you have a chance, take a look into the entire camel-cxf project tests to have an idea how to properly test.