AOP proxy is not being executed

[mpprdev]

I've a spring bean whose methods are advised with some extra logic in @aspect. When I try to mockk or spykk this bean, the extra logic is not being invoked. Is there a way around this?

[jnizet]

It's hard to know what the problem can be without a reproducible test case. My guess is that you're hitting spring-projects/spring-boot#5837, which is mentioned in the README as a limitation. But it can only be a guess.

[mpprdev]

Here is a reproducible test case with the following result

org.opentest4j.AssertionFailedError: value must be 201: mocked 101 + aop 100 ==> 
Expected :201
Actual   :101

package com.example.springmockkaop

import com.ninjasquad.springmockk.MockkBean
import io.mockk.every
import org.aspectj.lang.ProceedingJoinPoint
import org.aspectj.lang.annotation.Around
import org.aspectj.lang.annotation.Aspect
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Test
import org.junit.jupiter.api.extension.ExtendWith
import org.springframework.beans.factory.annotation.Autowired
import org.springframework.boot.test.context.TestConfiguration
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.ComponentScan
import org.springframework.context.annotation.Import
import org.springframework.stereotype.Component
import org.springframework.test.context.junit.jupiter.SpringExtension

open class BarService() {
	open fun doSomething(): Int = 100
}

open class FooService (private val barService: BarService) {

	open fun doSomething(): Int = barService.doSomething()
}

@Aspect
@Component
class FooAspect {
	@Around("target(com.example.springmockkaop.BarService) && execution(public * doSomething(..))")
	fun afterAdvice(joinPoint: ProceedingJoinPoint): Int {
		return joinPoint.proceed() as Int + 100
	}
}

@TestConfiguration
class TestConfig {

	@MockkBean
	@Autowired lateinit var barService: BarService

	@Bean
	fun fooService(barService: BarService): FooService = FooService(barService)
}

@ExtendWith(SpringExtension::class)
@Import(TestConfig::class)
@ComponentScan("com.example.springmockkaop")
class SpringmockkaopApplicationTests {

	@Autowired lateinit var fooService: FooService
	@Autowired lateinit var barService: BarService

	@Test
	fun testAOP() {

		every {
			barService.doSomething()
		} returns 101

		assertEquals(201, fooService.doSomething(), "value must be 201: mocked 101 + aop 100")
	}
}

[jnizet]

Thanks.

But the same test using the standard MockBean annotation and Mockito fails in the same way.
I'd say that it is expected behavior: you're testing FooService, and mocking its dependency BarService, so it seems normal to me that the mocked bar service returns what you tell it to return: the FooService test shouldn't even have to know that there is an aspect involved.

Anyway, if it's a bug and not a feature, the bug also exists in Spring test, and SpringMockK is consistent with it.