value                                | expected
        new SimpleNamed(name: null)          | "null"
        new SimpleNamed(name: "Lajos")       | "Lajos"
        new NamedWithToString(name: null)    | "toString():null"
        new NamedWithToString(name: "Lajos") | "toString():Lajos"
    }

    def "returns '#expected' when toString() returns #toStringReturns"() {
        def value = Mock(Object)

        when: