Any

test("Should insert the document id as the certificate token") {
            val collection = mockCollection()
            
            target.insert(certificate)
            
            verify { collection.document(certificate.token).set(any()).get() }
        }

collection.document(certificate.token).set(certificate)

java.lang.AssertionError: Verification failed: call 2 of 3: DocumentReference(child of #2#4).set(any())) was not called.

verify { collection.document(certificate.token).set(certificate).get() }

class Foo : FunSpec() {

    data class Data(val value: String)
    
    class Dooter {
        fun doot() {}
    }
    class Booer {
        fun boo(data: Data): Dooter {
            return Dooter()
        }
    }
    
    class Fooer {
        fun foo(data: Data): Booer {
            return Booer()
        }
    }
    
    class Target(
        val fooer: Fooer
    ) {
        fun doThings(data: Data) {
            fooer.foo(data).boo(data).doot()
        }
    }
    
    init {
        test("Test") {
            val fooer = mockk<Fooer>(relaxed = true)
            val target = Target(fooer)
            val data = Data("Data")
            
            target.doThings(data)
            
            verify { fooer.foo(data).boo(data).doot() }
        }
    }
}

verify { fooer.foo(data).boo(any()).doot() }