That sounds perfect for my use case. As I introduced `:skip` into the 
codebase, I would be pretty comfortable with adding this as well (and 
confine it to non-macOS platforms to limit exposure).

But I can't get it to work. The `before` just runs anyway:

https://circleci.com/gh/fastlane/fastlane/12612
https://github.com/fastlane/fastlane/blob/a103c655c4162723b96cae8f4a8b1258a1419321/spec_helper.rb#L90-L98
(Tried integrating it into my existing RSpec.configure block as well: 
https://github.com/fastlane/fastlane/pull/11284/commits/1815b4bca04f58ec84fd365097f61b8dd4e68b89#diff-82c4f19cbedb2b12a41b04cd4444aa3cR87)

What am I missing?

Jan


Am Mittwoch, 20. Dezember 2017 09:04:32 UTC+1 schrieb Myron Marston:
>
> There is a way you can simplify this further:
>
> module HookOverrides
>   def before(*args)
>     super unless metadata[:skip]
>   endend
> RSpec.configure do |c|
>   c.extend HookOverridesend
>
> This overrides before so that it’s a no-op if :skip metadata is set on 
> the example group. With that in place, you don’t need to call skip from 
> your before(:all) hooks. But bear in mind that if you ever set :skip on 
> an example group (to set a default for the group) and then set skip: false 
> for a specific example in the group…this override will cause the before 
> hook to be skipped even though you’d probably expect it in that case. 
> (Which is why we can’t apply this as a generic patch to RSpec itself).
>
> HTH,
> Myron
> ​
>
> On Tue, Dec 19, 2017 at 5:45 PM, Jan P. <[email protected] <javascript:>> 
> wrote:
>
>> Thanks Myron, that worked!
>>
>> > 4704 examples, 0 failures, 175 pending
>>
>> With code:
>>
>>     before(:all) do
>>       skip "Requires `xcodebuild` to be installed which is not possible on 
>> this platform" unless FastlaneCore::Helper.is_mac?
>>
>> As you can see right now I duplicate the reason text, and use the 
>> condition that also triggers `skip`/metadata block:
>>
>> https://github.com/fastlane/fastlane/blob/c6b1ac4621941b2efef702b923a572357c64eea9/spec_helper.rb#L68-L84
>>
>> Is there somehow a better way to "connect" the skip in `before` to the 
>> filters/metadata defined here?
>> It would be nicer if I could e.g. call a function with the "metadata" 
>> ("xcodebuild") as parameter to trigger the skip or something. Any idea?
>> Best,
>> Jan
>>
>>
>>
>> Am Mittwoch, 20. Dezember 2017 02:11:56 UTC+1 schrieb Myron Marston:
>>>
>>> Unfortunately, there’s no way to use :skip metadata at the group level 
>>> to skip before(:all) hooks. That’s because of how metadata in RSpec is 
>>> modeled, and how RSpec implements :skip. :skip metadata is handled at 
>>> the level of individual examples, and metadata is inherited from a group to 
>>> its enclosing examples. So, for example, this works:
>>>
>>> RSpec.describe MyClass, :skip do
>>>   it("is skipped"){ }
>>>   it("is also skipped") { }end
>>>
>>> Both examples will be skipped here.
>>>
>>> But consider that you can also do this:
>>>
>>> RSpec.describe MyClass, :skip do
>>>   it("is skipped"){ }
>>>   it("is also skipped") { }
>>>   it("is not skipped", skip: false) { }end
>>>
>>> Here we have on example that is overriding the skip: true metadata 
>>> inherited from the group. As a result, a before(:all) hook can’t simply 
>>> look at the group metadata to decide whether or not to skip or not. In 
>>> general, before(:all) hooks have lots of gotchas like this because they 
>>> don’t really fit well into the per-example semantics of so many parts of 
>>> RSpec. If you can refactor your tests to no longer need such a hook 
>>> (possibly using a aggregate_failures 
>>> <https://relishapp.com/rspec/rspec-core/docs/expectation-framework-integration/aggregating-failures>),
>>>  
>>> that is worth considering. Besides that, the other option you can do is to 
>>> manually call the skip method from your before(:all) hook:
>>>
>>> before(:all) do
>>>   skip "reason to skip" if should_skip?
>>>   # rest of your hook logicend
>>>
>>> HTH,
>>> Myron
>>> ​
>>>
>>>
>>>
>>> On Tue, Dec 19, 2017 at 3:47 PM, Jan P. <[email protected]> wrote:
>>>
>>>> Jon, I tried 
>>>>
>>>> describe "xcpretty reporter options generation", requires_xcodebuild: true 
>>>> do
>>>>
>>>>
>>>> and
>>>>
>>>> before(:all), requires_xcodebuild: true do
>>>>
>>>>
>>>> and
>>>>
>>>>
>>>> describe Scan::XCPrettyReporterOptionsGenerator, requires_xcodebuild: true 
>>>> do 
>>>>
>>>>
>>>> but all didn't work and the tests were logged as failure because of the 
>>>> `before` being executed.
>>>>
>>>> Am I doing this wrong somehow?
>>>>
>>>>
>>>> Code (last iteration) is here: 
>>>>
>>>> https://github.com/fastlane/fastlane/blob/janpio-mark_skipped_tests_as_pending_with_reason/scan/spec/xcpretty_reporter_options_generator_spec.rb
>>>>
>>>> https://github.com/fastlane/fastlane/blob/janpio-mark_skipped_tests_as_pending_with_reason/spec_helper.rb#L68-L83
>>>> Matching Circle CI run:
>>>> https://circleci.com/gh/fastlane/fastlane/12586
>>>>
>>>> -Jan
>>>>
>>>>
>>>>
>>>> Am Dienstag, 19. Dezember 2017 23:05:53 UTC+1 schrieb Jon Rowe:
>>>>>
>>>>> You should be able to specify `requires_xcodebuild: true` on the 
>>>>> describe as we’ll to prevent the before all being triggered
>>>>>
>>>>> Jon Rowe
>>>>> ---------------------------
>>>>> [email protected]
>>>>> jonrowe.co.uk
>>>>>
>>>>> On Wednesday, 20 December 2017 at 05:56, Jan P. wrote:
>>>>>
>>>>> Excuse the terrible code formatting, seems Google Groups wanted to be 
>>>>> helpful.
>>>>>
>>>>> Another try:
>>>>>
>>>>> describe Scan do
>>>>>   describe Scan::XCPrettyReporterOptionsGenerator do
>>>>>     before(:all) do
>>>>>       // code that fails when executed on non-macOS
>>>>>     end
>>>>>
>>>>>     describe "xcpretty reporter options generation" do
>>>>>       it "generates options for the junit tempfile report required by 
>>>>> scan", requires_xcodebuild: true do
>>>>>         ...
>>>>>
>>>>> -J
>>>>>
>>>>>
>>>>> Am Dienstag, 19. Dezember 2017 19:55:45 UTC+1 schrieb Jan P.:
>>>>>
>>>>> Yes, that works mostly like expected:
>>>>>
>>>>>
>>>>> 4704 examples, 21 failures, 154 pending
>>>>>
>>>>>
>>>>> and 
>>>>>
>>>>> ...
>>>>> [18:39:20]: ▸ Pending: (Failures listed here are expected and do not 
>>>>> affect your suite's status)
>>>>> [18:39:20]: ▸ 1) Fastlane Fastlane::EnvironmentPrinter contains main 
>>>>> information about the stack
>>>>> [18:39:20]: ▸ # Requires Xcode to be installed which is not possible 
>>>>> on this platform
>>>>> [18:39:20]: ▸ # ./fastlane/spec/env_spec.rb:28
>>>>> [18:39:20]: ▸ 2) Fastlane Fastlane::EnvironmentPrinter 
>>>>> FastlaneCore::Helper.xcode_version cannot be obtained contains stack 
>>>>> information other than Xcode Version
>>>>> [18:39:20]: ▸ # Requires Xcode to be installed which is not possible 
>>>>> on this platform
>>>>> [18:39:20]: ▸ # ./fastlane/spec/env_spec.rb:47
>>>>> ...
>>>>>
>>>>>
>>>>> Awesome!
>>>>>
>>>>>
>>>>> The 21 failures are new though. 
>>>>>
>>>>> I have a _spec.rb file with 21 examples that has a *before(:all)* 
>>>>> that seems to have been filtered with my old solution, but with *skip 
>>>>> *is now executed and fails:
>>>>>
>>>>> describe Scan do
>>>>> describe Scan::XCPrettyReporterOptionsGenerator do
>>>>> before(:all) do
>>>>> .. code that fails when executed on non-macOS ...
>>>>> end
>>>>>
>>>>> describe "xcpretty reporter options generation" do
>>>>> it "generates options for the junit tempfile report required by scan", 
>>>>> requires_xcodebuild: true do
>>>>> ...
>>>>>
>>>>> Any idea what I can do about this? 
>>>>> -J
>>>>>
>>>>>
>>>>>
>>>>> Am Dienstag, 19. Dezember 2017 19:26:17 UTC+1 schrieb Jan P.:
>>>>>
>>>>> Thanks for the quick answer.
>>>>>
>>>>> I missed "skipping examples" because I was so happy to have found 
>>>>> exclusion filters. Sounds like pretty much what I am looking for - even 
>>>>> better with the explicit reason I can set for skipping. Will try and 
>>>>> report 
>>>>> back.
>>>>>
>>>>> Best,
>>>>> Jan
>>>>>
>>>>>
>>>>>
>>>>> Am Dienstag, 19. Dezember 2017 17:37:56 UTC+1 schrieb Myron Marston:
>>>>>
>>>>> RSpec does not provide a way to get the number of examples that were 
>>>>> excluded by its inclusion or exclusion filters, but there’s a different 
>>>>> mechanism that will do what you want. Instead of filtering the examples 
>>>>> (which excludes them from consideration entirely), you can skip them, 
>>>>> which 
>>>>> prevents the body of the example from running, sets the example’s status 
>>>>> to 
>>>>> :pending, will print the example in yellow in the formatter output, 
>>>>> and will count the example in the summary total printed at the end (e.g. 
>>>>> “500 examples, 0 failures, 20 pending”). Normally, :skip metadata 
>>>>> will cause an example to be skipped 
>>>>> <https://www.google.com/url?q=https%3A%2F%2Frelishapp.com%2Frspec%2Frspec-core%2Fv%2F3-7%2Fdocs%2Fpending-and-skipped-examples%2Fskip-examples%23skipping-using-metadata&sa=D&sntz=1&usg=AFQjCNH2bA7au32CPocvg1H0M1Vzmcf5IQ>,
>>>>>  
>>>>> but you’ve overwritten it to cause :skip to cause examples to be 
>>>>> filtered out.
>>>>>
>>>>> Here’s my suggestion for how to wire this up.
>>>>>
>>>>> First, tag any examples that depend upon xcode with :uses_xcode 
>>>>> (rather than :skip), e.g.:
>>>>>
>>>>> it "uses a feature of xcode", :xcode do
>>>>>   # ...end
>>>>>
>>>>> it "does not use xcode at all" do
>>>>>   # ...end
>>>>>
>>>>> Then use define_derived_metadata to automatically tag these examples 
>>>>> with :skip if you are not running on OS X:
>>>>>
>>>>> # spec_helper.rbrequire 'rbconfig'
>>>>> RSpec.configure do |config|
>>>>>   unless RbConfig::CONFIG['host_os'] =~ /darwin/
>>>>>     config.define_derived_metadata(:xcode) do |meta|
>>>>>       meta[:skip] = "Can only be run on OS X"
>>>>>     end
>>>>>   endend
>>>>>
>>>>> The “Can only be run on OS X” bit will be printed in the output as the 
>>>>> reason the examples are pending.
>>>>>
>>>>> HTH,
>>>>> Myron
>>>>> ​
>>>>>
>>>>>
>>>>> On Tue, Dec 19, 2017 at 3:06 AM, Jan P. <[email protected]> wrote:
>>>>>
>>>>> RSpec has this nice method to exclude individual tests/examples or 
>>>>> whole groups by using filter_run_excluding in the config, then 
>>>>> tagging the examples:
>>>>>
>>>>>
>>>>> https://relishapp.com/rspec/rspec-core/v/3-7/docs/filtering/exclusion-filters
>>>>>
>>>>> RSpec.configure do |c|
>>>>>   c.filter_run_excluding :skip => trueend
>>>>> RSpec.describe "something" do
>>>>>   it "does one thing" do
>>>>>   end
>>>>>
>>>>>   it "does another thing", :skip => true do
>>>>>   endend
>>>>>
>>>>> "does one thing" will be checked, 
>>>>> "does another thing" will not.
>>>>>
>>>>>
>>>>> We are using this, for example, to skip some tests depending on the 
>>>>> platform the test is run on by wrapping the c.filter_run_excluding 
>>>>> :skip => true in an if block:
>>>>>
>>>>> If Mac,  
>>>>>    no exclusions,  if Ubuntu,  
>>>>>    exclude tests that do something with Xcode.
>>>>>
>>>>>
>>>>> Right now the numbers of passing examples/test is just lower if the 
>>>>> exclusion filter is used, but it would be nice to see the actual number 
>>>>> of 
>>>>> tests that are skipped.
>>>>>
>>>>> Is there a way to get the number of tests skipped by this method 
>>>>> during a test run?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Jan
>>>>>
>>>>> -- 
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