Quarkus kubernetesMockServer for application initialization - unit-testing

Question

I am working on a Quarkus application to acct as an Operator in a OpenShift/Kubernetes cluster. When writing the tests using a kubernetesMockServer it is working fine for REST calls to developed application but when code runs inside an Initialization Block it is failing, in the log I see that mock server is replying with a 404 error:
2020-02-17 11:04:12,148 INFO [okh.moc.MockWebServer] (MockWebServer /127.0.0.1:53048) MockWebServer[57577] received request: GET /apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions HTTP/1.1 and responded: HTTP/1.1 404 Client Error
On the TestCode I have:
#QuarkusTestResource(KubernetesMockServerTestResource.class)
#QuarkusTest
class TestAIRController {
#MockServer
KubernetesMockServer mockServer;
private CustomResourceDefinition crd;
private CustomResourceDefinitionList crdlist;
#BeforeEach
public void before() {
crd = new CustomResourceDefinitionBuilder()
.withApiVersion("apiextensions.k8s.io/v1beta1")
.withNewMetadata().withName("types.openshift.example-cloud.com")
.endMetadata()
.withNewSpec()
.withNewNames()
.withKind("Type")
.withPlural("types")
.endNames()
.withGroup("openshift.example-cloud.com")
.withVersion("v1")
.withScope("Namespaced")
.endSpec()
.build();
crdlist = new CustomResourceDefinitionListBuilder().withItems(crd).build();
mockServer.expect().get().withPath("/apis/apiextensions.k8s.io/v1beta1/customresourcedefinitions")
.andReturn(200, crdlist)
.always();
}
#Test
void test() {
RestAssured.when().get("/dummy").then().body("size()", Is.is(0));
}
}
The dummy rest is using the same code for searching the CRD, and in fact when running withouth the class observing the startup event it works fine
#Path("/dummy")
public class Dummy {
private static final Logger LOGGER =LoggerFactory.getLogger(Dummy.class);
#GET
#Produces(MediaType.APPLICATION_JSON)
public Response listCRDs(){
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("CRD NAME is {}", crd.getMetadata().getName());
return Response.ok(new ArrayList<String>()).build();
}
}
Finally this is an except of the
#ApplicationScoped
public class AIRWatcher {
private static final Logger LOGGER = LoggerFactory.getLogger(AIRWatcher.class);
void OnStart(#Observes StartupEvent ev) {
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("Using {}", crd.getMetadata().getName());
}
}
It's like for some reason the mock server is still not initialized for the Startup event, is there any way to solve it?

Answer 1

The problem is that the Mock Server is only configured to respond right before the test execution, while this code:
void OnStart(#Observes StartupEvent ev) {
KubernetesClient oc = new DefaultKubernetesClient();
CustomResourceDefinition crd = oc.customResourceDefinitions()
.list().getItems().stream()
.filter( ob -> ob.getMetadata().getName().equals("types.openshift.example-cloud.com"))
.findFirst().get();
LOGGER.info("Using {}", crd.getMetadata().getName());
}
runs when the application is actually comes up (which is before any #BeforeEach runs).
Can you please open an issue on the Quarkus Github? This should be something we provide a solution for