Details
Minor Description
We are using property placeholders in our route configuration in order to switch components in our unit tests. For example:
from(MyRouteBuilder.ENTRY_ENDPOINT)
.routeId("some.route")
.process(doSomething())
.to(MyRouteBuilder.EXIT_ENDPOINT);
Where ENTRY_ENDPOINT = "entry.endpoint.uri"
and EXIT_ENDPOINT = "exit.endpoint.uri"
Then, in production, the Camel context is initialized with a properties file where the URIs use the "jms" component, while in our unit tests we initialise the context with a 'test' properties file where the URIs use the "direct" component. For example:
# test.properties entry.endpoint.uri = direct:myRouteBuilder.entry exit.endpoint.uri = direct:myRouteBuilder.exit
A typical RouteBuilder unit test looks something like this:
@RunWith(CamelSpringJUnit4ClassRunner.class)
@ContextConfiguration(
classes = { MyRouteBuilderTest.TestConfig.class },
loader = CamelSpringDelegatingTestContextLoader.class
)
@MockEndpointsAndSkip(value = "direct:myRouteBuilder.exit")
public class MyRouteBuilderTest {
@Produce(uri = MyRouteBuilder.ENTRY_ENDPOINT)
private ProducerTemplate myRouteBuilderProducer;
@EndpointInject(uri = "mock:" + MyRouteBuilder.EXIT_ENDPOINT)
private MockEndpoint mockOutputServiceEndpoint;
@Autowired
private CamelContext camelContext;
@Test
public void testSomething() {
....
}
@Configuration
public static class TestConfig extends SingleRouteCamelConfiguration {
@Override
protected void setupCamelContext(CamelContext camelContext) throws Exception {
super.setupCamelContext(camelContext);
PropertiesComponent prop = camelContext.getComponent("properties", PropertiesComponent.class);
prop.setLocation("myRouteBuilder.test.properties");
}
@Override
public RouteBuilder route() {
return new MyRouteBuilder();
}
}
The issue we're having is that the @MockEndpointsAndSkip annotation on the test class does not resolve property placeholders, therefore we have to write the resolved value instead of the property placeholder value (which is a public static variable in the RouteBuilder implementation) I.e. we want to use MyRouteBuilder.EXIT_ENDPOINT instead of "direct:myRouteBuilder.exit".
It would be nicer to avoid having duplicate extra hard-coded Strings if possible, so that if the endpoint uri value is updated in the property file then all the tests don't also have to be updated.