Impossible to make mock of inner object for spyk

[vrumvrumich]

I'm trying to test class with partial mocking, so I decide to use spyk

class SomeClassTest{
    private val someMock: SomeFieldType = mockk()
    private val testInstance = spyk(SomeClass()){
        every { someField } returns someMock 
    }

    @Test
    fun `test method`() {
        every { someMock.someMethod() } returns mockk()

        testInstance.someMethod()

        verify { someMock.someMethod() }
    }
}

class SomeClass() {
     val someField = object : SomeFieldType () {
        override fun overridedMethod(): Any {
            return something;
        }
    }

    override fun someMethod() = someField.someMethod()
}

And I need to verify that internally created instance of anonymous class call method.
But problem that someField is still not mocked and call original method of this class

[Raibaz]

Since your inner object is being instantiated internally, you need to mock the SomeFieldType constructor to have it return a mock:

class SomeClassTest {

    @Test
    fun `test method`() {
        mockkConstructor(SomeFieldType::class)

        testInstance.someMethod()
        
        verify { anyConstructed<SomeFieldType>().someMethod() }
    }
}

Does this make sense?

[vrumvrumich]

@Raibaz

    @Test
    fun `test method`() {
        mockkConstructor(SomeFieldType::class)
        every { anyConstructed<SomeFieldType>().someMethod() } returns someMock 

        testInstance.someMethod()

        verify { anyConstructed<SomeFieldType>().someMethod() }
    }

still trying to call original someMethod() of someField
override fun someMethod() = someField.someMethod()

[dpotyralski]

@Raibaz I think I have a similar issue, please could you check the code below:

    @Test
    fun `test method`() {
        mockkConstructor(BaseClass::class)

        SimpleService().start()

        verify { anyConstructed<BaseClass>().updateFromBaseClass("A") }
    }

class SimpleService {

    fun start() {
        val baseClass = BaseClass()
        baseClass.updateFromBaseClass("A")
    }

}

Debug shows that mockkConstructor is there:

but eventually get:

Verification failed: call 1 of 1: BaseClass(mockkConstructor<BaseClass>()).updateFromBaseClass(eq(A))) was not called

What am I missing here ? With given example wanted to check if particular functions was triggered on the mock object.
On mockk version: "1.10.6" all works as expected, however after this release it stopped.

[vrumvrumich]

@Raibaz solution with mockkConstructor(SomeFieldType::class) work only when I not creating anonymous class using object but just create an instance of SomeFieldType

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