基于iOS版本的条件单元测试-ConditionalunittestingbasedoniOSversion

4  

Your approach seems fine to me.

你的方法对我来说似乎很好。

Generally speaking, I do not think that there is something like a "standard way" to selectively execute unit tests based on iOS version.

一般来说，我认为没有像“标准方式”那样有选择地执行基于iOS版本的单元测试。

On the one hand, your approach is the same that can be used to implement one feature selectively or in different ways according to iOS version. Possibly you already know about this discussion on CocoaWithLove: Tips and Tricks from conditional.... It's pretty old, but the approaches described here to hold still.

一方面，根据iOS版本，您的方法可以用于有选择地或以不同方式实现一个功能。可能你已经知道关于CocoaWithLove的讨论了：有条件的提示和技巧......它已经很老了，但是这里所描述的方法仍然存在。

You do not specify the way your unit tests are executed, but the real cool way to handle this, IMO, would be to be able to specify which tests to execute outside of the implementation, so that you state which ones are for iOS7 only and do not pollute your test implementation.

你没有指定单元测试的执行方式，但处理这个问题的真正酷的方法是IMO，它能够指定在实现之外执行哪些测试，以便你说明哪些只适用于iOS7，不要污染你的测试实现。

This could done, e.g., through a version number associated to each test; before calling the unit test implementation you check the version number in the function calling, e.g., testSomethingThatOnlyWorksOniOS7.

这可以通过例如与每个测试相关联的版本号来完成;在调用单元测试实现之前，请检查函数调用中的版本号，例如testSomethingThatOnlyWorksOniOS7。

EDIT:

编辑：

Actually, things could be easier that what I thought in the first place. Now I am going a bit hacky...

实际上，事情可能比我想到的更容易。现在我有点hacky ......

You could modify the place in OCUnit where the actual test method call is done (no idea about this, sorry, but I do not think it should be hard to find out...) so that it checks on the selector name: you convert the selector name into a string (NSStringFromSelector) and if it matches some regular expression, you take some specific branch (which would simply be in your case, ignoring that test).

您可以在OCUnit中修改实际测试方法调用的地方（不知道这个，对不起，但我不认为应该很难找到...）以便它检查选择器名称：您转换将选择器名称转换为字符串（NSStringFromSelector），如果它匹配某个正则表达式，则需要一些特定的分支（在您的情况下，这将忽略该测试）。

If you are worried by modifying OCUnit, which might not be sensible, what I said above could be done through method swizzling: only if the selector name does not match your expression, you call the original implementation, otherwise do nothing.

如果您担心修改OCUnit，这可能不合理，我上面所说的可以通过方法调配来完成：只有当选择器名称与您的表达式不匹配时，才调用原始实现，否则什么都不做。

3  

The best way is to run respondsToSelector: on a method you know is only available on iOS 7. E.g.

最好的方法是运行respondsToSelector：在一个你知道的方法只能在iOS 7上运行。

[view respondsToSelector:@selector(snapshotViewAfterScreenUpdates:)]

or

要么

[UIView instancesRespondToSelector:@selector(snapshotViewAfterScreenUpdates:)]

1  

There is not a standard way of doing this, and generally speaking testing is not something the iOS community talks too much about. The way I would approach this is by putting specific iOS7 tests on a test target on its own and then basically decide to run that suite accordingly

没有一种标准的方法可以做到这一点，一般而言，测试不是iOS社区过多谈论的内容。我接近这个的方法是将特定的iOS7测试单独放在测试目标上，然后基本上决定相应地运行该套件

0  

I tried playing around with OCUnit as @sergio suggested but I couldn't get far away. So far I'm annotating version-specific tests with a macro. It looks like this:

我试着和OCUnit一起玩@sergio建议，但我无法远离。到目前为止，我正在使用宏来注释特定于版本的测试。它看起来像这样：

#define SKIP_IF_VERSION(v) if (floor(NSFoundationVersionNumber) <= v) return;

- (void)testSomethingThatOnlyWorksOniOS7
{ SKIP_IF_VERSION(NSFoundationVersionNumber_iOS_6_1)
// Test goes here
}

What I don't like about this approach is that the test runs anyway (and doesn't do anything). I would prefer the test to be skipped entirely.

我不喜欢这种方法是测试运行无论如何（并没有做任何事情）。我宁愿完全跳过测试。