是否可以在不运行单元测试的情况下编译unittest并为特定模块显式运行unittest？ [英] Is it possible to compile unittest without running them and explicitly run unittest for a specific module?

问题描述

我在开发API时经常在主函数中编写测试代码，但由于D已集成单元测试，所以我想开始使用它们。

I often wrote my test code in the main function while developing an API but because D has integrated unittest I want to start using them.

我当前的工作流程是在下面的代码中，我有一个脚本来监视任何.d文件中的文件更改，如果脚本找到修改后的文件，它将运行 dub build

My current work flow is the following, I have a script that watches for file changes in any .d files, if the scripts finds a modified file it will run dub build

问题在于 dub构建似乎没有构建单元测试

The problem is that dub build doesn't seem to build the unittest

module foo

struct Bar{..}

unittest{
...
// some syntax error here
...
}

如果我明确运行 dub测试。但是我不想同时运行和编译它们。

It only compiles the unittests if I explicitly run dub test. But I don't want to run and compile them at the same time.

第二个问题是我希望能够运行单个模块的单元测试，例如

The second problem is that I want to be able to run unittests for a single module for example

dub测试模块foo

这可能吗？

推荐答案

您可以使用特征 getUnittests对自定义测试运行程序进行编程。

getUnitTests

getUnitTests

采用一个参数，即集合的符号（例如struct / class /模块）。结果是该集合的所有单元测试功能的元组。返回的函数就像普通的嵌套静态函数一样，CTFE将起作用并且可以访问UDA。

Takes one argument, a symbol of an aggregate (e.g. struct/class/module). The result is a tuple of all the unit test functions of that aggregate. The functions returned are like normal nested static functions, CTFE will work and UDA's will be accessible.

在您的 main（），您应该可以编写使用任意数量模块的东西：

in your main() you should be able to write something that takes an arbitrary number of module:

void runModuleTests(Modules...)()
{
    static if (Modules.length > 1)
        runModuleTests!(Modules[1..$]);
    else static if (Modules.length == 1)
        foreach(test; __traits(getUnitTests, Modules[0])) test;
}

当然必须使用 -unittest 开关传递给dmd

of course the switch -unittest must be passed to dmd

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