Try something like
it "works" do
output = `firefox -v`
expect(output).to eq("1.2.3")
end
There are other ways in Ruby to get the output of shell commands -- look up
popen3 and popen4 -- but backtick is the simplest. Of course, it's
platform-dependent and YMMV and all that.
- A
On Wed, Jun 24, 2015 at 2:53 PM, Myron Marston <[email protected]>
wrote:
> Please provide code inline or via links to gist.github.com (or a similar
> service) rather than providing photos.
>
> Anyhow, the `command` method isn't part of core RSpec. Whatever library
> you are using that provides that probably provides a way to get the stdout
> of running that command. You'll have to check with the docs or project
> maintainers on that.
>
> Myron
>
> On Wed, Jun 24, 2015 at 11:49 AM, Laurence Rosenzweig <[email protected]>
> wrote:
>
>> Thanks for the reply. I had seen that a few days ago but didn't think it
>> was helpful...perhaps I did not use it correctly. It felt like whatever I
>> wrote, it just approved. Basically I have a command I am running and I want
>> to see what it's stdout is to see for some of my tests why it is not
>> matching my expectation. See attached image for what I am trying to do.
>>
>>
>> On Wednesday, June 24, 2015 at 1:42:57 PM UTC-4, Myron Marston wrote:
>>>
>>> On Wednesday, June 24, 2015 at 6:18:02 AM UTC-7, Laurence Rosenzweig
>>> wrote:
>>>>
>>>>
>>>>
>>>> On Wednesday, June 24, 2015 at 9:14:58 AM UTC-4, Laurence Rosenzweig
>>>> wrote:
>>>>>
>>>>> I have been running Rspec tests and want to print out STDOUT. It seems
>>>>> like a very simple problem yet I see very little documentation about this
>>>>> issue and I have been unable to figure out how to print it. I know as a
>>>>> variable you can do $stdout but whenever I print it (using pp, puts, or
>>>>> print), I cannot get the actual value of stdout.
>>>>>
>>>>>
>>>>>
>>>>> I attached an image of one of my tests with a few of my different
>>>>> attempts (commented out at the moment).
>>>>>
>>>>>
>>>>>
>>>>> Thanks for your help!
>>>>>
>>>>
>>>
>>> Ruby's `$stdout` doesn't provide you with what has been written to
>>> stdout. It's an IO object that can be written to but not read from. If
>>> you want to set an expectation about what has been written to stdout, we
>>> have a matcher for that:
>>>
>>>
>>> https://relishapp.com/rspec/rspec-expectations/v/3-3/docs/built-in-matchers/output-matcher
>>>
>>> HTH,
>>> Myron
>>>
>>>
>>>
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--
Alex Chaffee - [email protected]
http://alexchaffee.com
http://codelikethis.com
http://twitter.com/alexch
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