Hi guys :slightly_smiling_face: Is there anyway to...

# mockk

[Jérémy CROS]

Hi guys 🙂
Is there anyway to make the second mock declaration work?

class DummyUseCase {

    operator fun invoke(): String = TODO()
}

@Test
fun test() {
    val dummyUseCase1: DummyUseCase = mockk()
    every { dummyUseCase1.invoke() } returns ""
    val dummyUseCase2: DummyUseCase = mockk {
        every { this.invoke() } returns ""
    }
}

In the second case, I have a compilation error: “Not enough information to infer type variable T”
(I’m fine with the first declaration but we’ve been trying this operator invoke thing for our use cases that was showcased in one of the recent MAD Skills video and we use sometimes the second mock declaration)
Thanks! 🙂

[Sam]

If this is the same issue I've run into in the past, the workaround is

every { [e-mail]() } returns ""

[ephemient]

exactly, wrong this

[ephemient]

if you simply wrote every { invoke() } that should work too

[Jérémy CROS]

Yes! Now it works 🙏 🙏

[Jérémy CROS]

unfortunately, simple invoke does not, it’s the first thing I tried

[ephemient]

hmm that's odd, I didn't think there was another no-arg invoke overload in that scope

[Jérémy CROS]

yeah, that’s what was confusing me:

[Sam]

It's this function here that's causing the problem: https://github.com/mockk/mockk/blob/ddb5a99bbe4433392c339d713683339ecb064006/dsl/common/src/main/kotlin/io/mockk/API.kt#L803

[Sam]

I'm not really sure what it's supposed to be for 🤔

[ephemient]

if you put a newline after every you'll see another receiver there