我已经定义了带有测试功能的Clojure命名空间,并希望通过lein test
使用Leiningen 2.9.1运行它们。
测试功能是按层次组织的。如果我只运行lein test
,将提取所有deftest
,从而导致测试重复。例如:
(ns foo.bar.test
(:require
[clojure.test :as t]
[clojure.spec.alpha :as s]
[foo.bar.main :as sut])) ; system under test
(t/deftest test-strip-empty
(t/is
(s/valid? ::sut/a-spec some-value)))
(t/deftest test-strip-several-squares
(t/is
(s/valid? ::sut/a-spec some-value)))
; collect subtests
(t/deftest testcollect-strip
(test-strip-empty)
(test-strip-several-squares))
lein test
将同时运行所有三个deftest
条目,从而运行test-strip-empty
和test-strip-several-squares
两次。
可以定义函数test-ns-hook
以显式调用“测试树的顶部”。
(defn test-ns-hook []
(testcollect-strip))
如果存在,lein test
将仅呼叫test-ns-hook
:
哪个好!
但是一旦存在,我就不能再进行个别测试了。
lein test :only foo.bar.test/test-strip-several-squares lein test foo.bar.test Ran 0 tests containing 0 assertions. 0 failures, 0 errors.
不好!
删除test-ns-hook
的定义,即可使用:
lein test :only foo.bar.test/test-strip-several-squares ... Ran 1 tests containing 1 assertions. 1 failures, 0 errors. Tests failed.
是否可以通过结合以下两项功能来最大程度地提高幸福感:使test-ns-hook
保持定义状态并能够运行单独的测试?
答案 0 :(得分:1)
不要像testcollect-strip
那样对测试进行分组。我将其称为反模式。
您可以使用deftest
宏:https://clojuredocs.org/clojure.test/testing
testing
格式内将各个断言分层化。
(deftest t-math
(testing "Arithmetic"
(testing "with positive integers"
(is (= 4 (+ 2 2)))
(is (= 7 (+ 3 4))))
(testing "with negative integers"
(is (= -4 (+ -2 -2)))
(is (= -1 (+ 3 -4))))))
~/expr/demo > lein clean ; lein test lein test _bootstrap ------------------------------- Clojure 1.10.0 Java 12 ------------------------------- lein test tst.demo.core Ran 2 tests containing 4 assertions. 0 failures, 0 errors.
您还可以使用 test选择器仅运行一部分测试:
~ > lein help test Run the project's tests. Marking deftest or ns forms with metadata allows you to pick selectors to specify a subset of your test suite to run: (deftest ^:integration network-heavy-test (is (= [1 2 3] (:numbers (network-operation))))) Write the selectors in project.clj: :test-selectors {:default (complement :integration) :integration :integration} Arguments to this task will be considered test selectors if they are keywords, otherwise arguments must be test namespaces or files to run. With no arguments the :default test selector is used if present, otherwise all tests are run. Test selector arguments must come after the list of namespaces. A default :only test-selector is available to run select tests. For example, `lein test :only leiningen.test.test/test-default-selector` only runs the specified test. A default :all test-selector is available to run all tests. Arguments: ([& tests])
因此,将元数据添加到测试定义中
(deftest ^:basic-math t-math
(testing "Arithmetic"
(testing "with positive integers"
(is (= 4 (+ 2 2)))
(is (= 7 (+ 3 4))))
(testing "with negative integers"
(is (= -4 (+ -2 -2)))
(is (= -1 (+ 3 -4))))))
并声明测试选择器:basics
抢占:basic-math
中标有project.clj
的所有内容:
(defproject foo.bar "0.1.0-SNAPSHOT"
...
:test-selectors {:basics :basic-math})
现在可以通过以下方式仅运行标有:basic-math
的测试:
~ > lein test :basics
还有另外一个技巧要记住。测试代码(目录/文件)的名称空间结构不需要与源代码的名称空间结构匹配。您可能只有一个源代码ns super.calc
,但是有一个完整的测试名称空间层次结构。我给它们都加了根tst.
前缀,我认为这比在所有内容上加上_test
后缀会带来更好的命名结构:
tst.super.calc
tst.super.calc.add
tst.super.calc.add.int
tst.super.calc.add.int.pos
tst.super.calc.add.int.neg
tst.super.calc.add.float
tst.super.calc.add.float.pos
tst.super.calc.add.float.neg
tst.super.calc.mult
...
因此您可以根据需要获得细粒度的图像。将此与lein测试选择器混合使用,可以实现几乎无限的细粒度控制。
也是
请签出lein-test-refresh,这是我最喜欢在lein中进行测试的方式