Hello, i am getting error with args and i dont know what is the solution. ```answers { thirdArg...

# mockk

[Sergio Crespo Toubes]

Hello, i am getting error with args and i dont know what is the solution.

answers {
    thirdArg<(String) -> Unit>().invoke("text")
}

i had to change it to

answers {
    thirdArg<(String) -> Boolean>().invoke("text")
}

but i am getting the next solution Unit cannot be cast to java.lang.Boolean

any idea? thanks

[Mattia Tommasone]

what’s the signature of the function you are mocking? does it have any overloads?

[Sergio Crespo Toubes]

fun doSomething(
    data1: Int,
    data2: String,
    onSuccess: (String) -> Unit,
    onError: (Throwable) -> Unit
): Boolean

[Sergio Crespo Toubes]

every {
manager.doSomething(
data1, data2, captureLambda(), captureLambda()
)
} answers {
thirdArg<(String) -> Boolean>().invoke("text")
}

[Mattia Tommasone]

what error are you getting if you mock it with thirdArg<(String) -> Unit>?

[Sergio Crespo Toubes]

Type mismatch.
Required:
Boolean
Found:
Unit

[Sergio Crespo Toubes]

if i change it with Boolean compile

[Sergio Crespo Toubes]

but that is different from signature

[Mattia Tommasone]

that’s pretty weird indeed

[Sergio Crespo Toubes]

😅

[ephemient]

what happens if you write

answers {
    thirdArg<(String) -> Unit>().invoke("text")
    Unit
}

[Sergio Crespo Toubes]

it works with true, not with Unit becuase the signature of the method return Boolean thanks

[ephemient]

ah, of course that's what I should have written

[Sergio Crespo Toubes]

thank you so much

[Mattia Tommasone]

ah, that’s right, thanks a lot!