无法解析符号:在这种情况下 [英] Unable to resolve symbol: is in this context

问题描述

我是Clojure的新手，在运行单元测试时遇到了一些麻烦.

I'm brand new to Clojure, and I am having a bit of trouble getting unit tests running.

(ns com.bluepojo.scratch
  (:require clojure.test))

(defn add-one
  ([x] (+ x 1))
  )

(is (= (add-one 3) 4))

给予:

java.lang.Exception: Unable to resolve symbol: is in this context

我想念什么?

更新:

这有效:

(clojure.test/is (= (add-one 3) 4))

我如何做到这一点，这样就不必在声明之前声明clojure.test?

How do I make it so that I don't have to declare clojure.test before the is?

推荐答案

您对ns宏的使用不太正确，您可以通过多种方法进行修复.我建议其中之一

Your use of the ns macro is not quite correct and you have several options to fix it. I would suggest one of

(ns com.bluepojo.scratch
  (:require [clojure.test :as test))

(defn add-one
  ([x] (+ x 1)))

(test/is (= (add-one 3) 4))

2.使用use

(ns com.bluepojo.scratch
  (:use [clojure.test :only [is]]))

(defn add-one
  ([x] (+ x 1)))

(is (= (add-one 3) 4))

看看

Take a look at this article which explains this at some length

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