使用 Ruby MiniTest 之前/之后套件
MiniTest 中是否有 RSpec 的 before(:suite)
和 after(:suite)
的替代方案?
我怀疑自定义测试运行程序是合适的,但是我无法想象这不是一个常见的要求,所以有人可能已经实现了。:-)
Is there an alternative to RSpec's before(:suite)
and after(:suite)
in MiniTest?
I suspect that a custom test runner is in order, however I cannot imagine it is not a common requirement, so somebody has probably implemented in. :-)
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minitest 的优点在于它的灵活性。我一直在使用带有 +before_suite+ 回调的自定义 MiniTest Runner。类似于此示例 - Ruby Minitest:Suite- 或 Class-级别设置?
然后告诉 minitest 使用自定义运行器
Nice thing about minitest is its flexibility. I've been using a custom MiniTest Runner with a +before_suite+ callback. Something like in this example - Ruby Minitest: Suite- or Class- level setup?
And then tell minitest to use the custom runner
您还可以通过更新 test_helper.rb (或 spec_helper.rb)来添加测试后回调,如下所示
You can also add an after test callback by updating your test_helper.rb (or spec_helper.rb) like this
有
setup()
和teardown()
方法可用。该文档还列出了可用的before()
和after()
。编辑:您是否希望在每次测试之前或整个套件完成之前或之后运行一些东西?
There are
setup()
andteardown()
methods available. The documentation also listsbefore()
andafter()
as being available.Edit: Are you looking to run something before each test or before or after the whole suite is finished?
正如上面 Caley 的回答和评论中所述,
MiniTest::Unit
包含函数after_tests
。没有before_tests
或等效项,但minitest_helper.rb
文件中的任何代码都应在测试套件之前运行,以便执行此类功能。警告:在 Ruby 中仍然相对较新,在 Minitest 中也很新,所以如果我错了,请纠正我! :-)
As noted above in Caley's answer and comments,
MiniTest::Unit
contains the functionafter_tests
. There is nobefore_tests
or equivalent, but any code in yourminitest_helper.rb
file should be run before the test suite, so that will do the office of such a function.Caveat: Still relatively new at Ruby, and very new at Minitest, so if I'm wrong, please correct me! :-)
要使其适用于当前版本的 Minitest (5.0.6),您需要
require 'minitest'
并使用Minitest.after_run { ... }
。https://github.com/seattlerb/minitest/blob/master/lib /minitest.rb
https://github.com/seattlerb/minitest/blob/master /lib/minitest/unit.rb
To get this to work with the current version of Minitest (5.0.6) you need to
require 'minitest'
and useMinitest.after_run { ... }
.https://github.com/seattlerb/minitest/blob/master/lib/minitest.rb
https://github.com/seattlerb/minitest/blob/master/lib/minitest/unit.rb
要在每个测试之前运行代码,请使用
before
。您在实例的上下文中进行操作,可能是由describe
隐式生成的类,因此在before
中设置的实例变量在每个测试中都可以访问(例如在it
块)。要在所有测试之前运行代码,只需将测试包装在一个类、
MiniTest::Spec
的子类或其他类中;现在,在测试本身之前,您可以创建类或模块、设置类变量、调用类方法等,所有这些都将在所有测试中可用。示例:
这是输出,以及我在大括号中的注释,解释了输出的每一行所证明的内容:(
请注意,我并不是说此输出暗示对测试运行顺序的任何保证。)
另一种方法是使用存在
before
,但将代码包装在类变量标志中仅运行一次。例子:To run code before each test, use
before
. You're operating here in the context of an instance, possibly of a class generated implicitly bydescribe
, so instance variables set inbefore
are accessible in each test (e.g. inside anit
block).To run code before all tests, simply wrap the tests in a class, a subclass of
MiniTest::Spec
or whatever; now, before the tests themselves, you can create a class or module, set class variables, call a class method, etc., and all of that will be available in all tests.Example:
Here's the output, along with my comments in braces explaining what each line of the output proves:
(Note that I do not mean this output to imply any guarantee about the order in which tests will run.)
Another approach is to use the existing
before
but wrap code to run only once in a class variable flag. Example:一种简单的方法是编写一个受保护的类方法,然后在
begin
中调用该方法。Minitest::Spec 示例:
...得到
One simple way to do this is to write a guarded class method, and then call that in a
begin
.A Minitest::Spec example:
...to get
您可以将代码放在类之外。
这就是我为了拥有一面横幅所做的事情。
You can just place the code outside of the class.
This is what I do to have a banner.