Spring Cloud Openfeign Feign FallbackFactory not working with Integration Test

Describe the bug Hi, I am using feign fallback factory to test circuit breaker and fallbacks. integration tests don't seem to be triggering the fallbackfactory class. Is there anything I am missing here?

I am expecting the fallback class to be triggered and return "fallback" string, but it throwing a feignException.

2022-04-19 16:43:16.127  INFO 25876 --- [           main] .w.s.u.i.o.FeignCircuitBreakerConfigTest : Started FeignCircuitBreakerConfigTest in 1.433 seconds (JVM running for 3.268)
2022-04-19 16:43:19.793 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] ---> GET http://localhost:9100/testGet HTTP/1.1
2022-04-19 16:43:19.793 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] ---> END HTTP (0-byte body)
2022-04-19 16:43:19.858 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] <--- HTTP/1.1 404 Not Found (59ms)
2022-04-19 16:43:19.859 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] connection: keep-alive
2022-04-19 16:43:19.859 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] content-length: 0
2022-04-19 16:43:19.859 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] date: Tue, 19 Apr 2022 20:43:19 GMT
2022-04-19 16:43:19.859 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] server: nginx/1.20.2
2022-04-19 16:43:19.859 DEBUG 25876 --- [           main] FeignCircuitBreakerConfigTest$TestClient : [TestClient#testGet] <--- END HTTP (0-byte body)

feign.FeignException$NotFound: [404 Not Found] during [GET] to [http://localhost:9100/testGet] [TestClient#testGet()]: []

    at feign.FeignException.clientErrorStatus(FeignException.java:201)
    at feign.FeignException.errorStatus(FeignException.java:177)
    at feign.FeignException.errorStatus(FeignException.java:169)
    at feign.codec.ErrorDecoder$Default.decode(ErrorDecoder.java:92)
    at feign.AsyncResponseHandler.handleResponse(AsyncResponseHandler.java:96)
    at feign.SynchronousMethodHandler.executeAndDecode(SynchronousMethodHandler.java:138)
    at feign.SynchronousMethodHandler.invoke(SynchronousMethodHandler.java:89)
    at feign.ReflectiveFeign$FeignInvocationHandler.invoke(ReflectiveFeign.java:100)
    at com.wayfair.se.udl.integrations.orders.$Proxy57.testGet(Unknown Source)
    at com.wayfair.se.udl.integrations.orders.FeignCircuitBreakerConfigTest.shouldOpenCB(FeignCircuitBreakerConfigTest.java:63)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:566)
    at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:688)
    at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
    at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
    at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:210)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:206)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:131)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:65)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1541)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:143)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:129)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:127)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:126)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:84)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:108)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:96)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:75)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:71)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
    at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:235)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:54)
    ```

Thanks for your help!

 ```
  <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-openfeign</artifactId>
        <version>3.1.0</version>
      </dependency>
      <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-circuitbreaker-resilience4j</artifactId>
        <version>2.1.1</version>
      </dependency>
 ```
application-test.yaml

feign: circuitbreaker: enabled: true

**Sample**

@SpringBootTest( classes = { FeignAutoConfiguration.class } ) @EnableFeignClients("com.example") @ActiveProfiles("test") @Slf4j class FeignCircuitBreakerConfigTest {

@Autowired TestClient testClient;

@FeignClient(name = "testClient", url = "http://localhost:9100", fallbackFactory = TestClientFallback.class) protected interface TestClient {

@GetMapping(value = "/testGet")
String testGet();

}

@Component static class TestClientFallback implements FallbackFactory {

@Override
public TestClient create(Throwable cause) {
  return new TestClient() {
    @Override
    public String testGet() {
      return "fallback";
    }
  };
}

}

@Test void shouldOpenCB() { for (int i = 0; i < 3; i++) { //returns 500s var response = testClient.testGet(); } } }

```