How can I partially verify dataclass as function argument?

Question

I'll et the code speak.

@Test
fun test() {
    data class Activity(
        val type: String,
        val ts: Instant,
    )

    fun persistActivity(a: Activity): Unit = mockk()

    fun createActivity(type: String) {
        persistActivity(Activity(type, Instant.now()))
    }

    every { persistActivity(any()) } just Runs

    createActivity("foo")

    verify {
        persistActivity(Activity("foo", any()))
    }
}

However this fails with

Failed matching mocking signature for

left matchers: [any()]
io.mockk.MockKException: Failed matching mocking signature for

left matchers: [any()]

How can I verify persistActivity() was passed a data class with loose constraints on some of its fields? Can I achieve that without using cumbersome match {} function?

Answer 1

The persistActivity function is not mocked, so verification must fail. If it were mocked correctly though, you could use match for partial verification:

verify { persistActivity(match { it.type == "foo" }) }