OpenFeign in another module

[yerzhant]

id("org.springframework.boot") version "3.5.7"
id("io.spring.dependency-management") version "1.1.7"

extra["springCloudVersion"] = "2025.0.0"
extra["springModulithVersion"] = "1.4.3"

When a project has an OpenFeign in it (implementation("org.springframework.cloud:spring-cloud-starter-openfeign")) and a feign client is in some module, other than a testing one, then when one does a module test (@ApplicationModuleTest), then the test fails with an exception:

Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.cloud.openfeign.aot.FeignClientBeanFactoryInitializationAotProcessor]: Factory method 'feignClientBeanFactoryInitializationCodeGenerator' threw exception with message: No bean named 'some.package.SmsCenter' available
	at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.lambda$instantiate$0(SimpleInstantiationStrategy.java:200)
	at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiateWithFactoryMethod(SimpleInstantiationStrategy.java:89)
	at app//org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:169)
	at app//org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)
	... 31 more

But if it (the module, containing the feign interface) is added to the test scope (@ApplicationModuleTest(extraIncludes = ["sms"])), then the test passes.

[odrotbohm]

I think we need a minimal reproducer (ideally Java, Maven) to move forward with this one.

[yerzhant]

https://github.com/yerzhant/open-feign-in-another-modulith-module

[yerzhant]

https://github.com/yerzhant/open-feign-in-another-modulith-module/blob/main/src/test/java/com/example/demo/product/usecase/SomeCoolStuffTest.java

[yerzhant]

https://start.spring.io/#!type=gradle-project&language=java&platformVersion=3.5.8&packaging=jar&configurationFileFormat=yaml&jvmVersion=21&groupId=com.example&artifactId=demo&name=demo&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.demo&dependencies=devtools,modulith,web,cloud-feign