Question

我无法使用minitest测试类似于此的方法，其中对象具有对其他对象的引用：

def drive num
    old_place = @current_place.name
    if num == 0
        road = @current_place.first_place_road
        @current_place = @current_place.first_place
    else
        road = @current_place.second_place_road
        @current_place = @current_place.second_place
    end
    print_drive(old_place, road)
end

我试图通过创建2个模拟对象来测试，并将其方法存根以返回另一个模拟。

def test_drive_to_first_place

    start_place = Minitest::Mock.new
    end_place = Minitest::Mock.new

    def start_place.name; "first place"; end
    def start_place.first_place; end_place; end
    def start_place.first_place_road; "road"; end

    def end_place.name; "end place"; end
    def end_place.first_place; nil; end
    def start_place.first_place_road; nil; end


    driver = Driver::new "driver", start_place

    driver.drive(0)

    assert_output(stdout = ......
end

我收到此错误，我不知道如何处理它。我测试的对象没有任何属性或方法：end_place，它只是在测试中用作名称。

1) Error:
DriverTest#test_drive_to_first_place:
NoMethodError: unmocked method :end_place, expected one of []

Answer 1

设置所需响应的正确格式为......

start_place.expect(:first_place, end_place)

如果您定义了一种方法，则无法访问该方法之外定义的变量，因此您的def start_place.first_place...代码无效。

测试引用最小和最小的其他对象的对象。红宝石

1 个答案: