Question

我正在阅读关于TDD的第8号行动文件中的“克隆”,并尝试模拟宏观。它利用具有活力的具有约束力的机制来阻止职能。 Alas, in Clojure 1.3, it is not possible to use the binding mechanism for non-dynamic vars, so the stubbing men don t work in most cases, than You specified the var which points to a function Dynamic. 然后,我想知道,在Midje是如何做的,并试图找到所提供的来源,但我无法找到。因此:

如何在米杰实施? 是否有人对此作出详细解释?

Answer 1

彩礼1.3 提供了一种微粒,甚至与已宣布有活力的var合在一起:

user=> (def this-is-not-dynamic)
user=> (with-redefs [this-is-not-dynamic 900] this-is-not-dynamic)
900

对于落后的兼容性, Midje使用自己的版本,其口号类似:

(defn alter-one-root [[variable new-value]]
   (if (bound? variable) 
     (let [old-value (deref variable)]
       (alter-var-root variable (fn [current-value] new-value))
       [variable old-value])
     (do
       (.bindRoot variable new-value)
       [variable unbound-marker])))

友情链接