when:

        instantiator.newInstance(SomeTypeWithPrimitiveTypes, "a")

        then:
        e = thrown()
        e.cause.message == "Could not find any public constructor for ${SomeTypeWithPrimitiveTypes} which accepts parameters [java.lang.String]."

        when:

        instantiator.newInstance(SomeTypeWithPrimitiveTypes, 22)

        then:
        e = thrown()