On Monday 11 May 2009, Bill Kocik wrote:
> On Mon, May 11, 2009 at 4:32 PM, Ben Mabey <[email protected]> wrote:
> > Well.. IIRC ActiveSupport::JSON.decode will return a ruby hash of
> > the JSON, correct? So you should be able to make expectations on
> > it just like a regular hash object.
>
> You're absolutely correct - I think I did a poor job of asking my
> question. Maybe a more concrete example would help. Suppose I have
> this JSON:
>
> response:{code:'200',requestId:'1234'}
>
> I want to have a scenario like this in my Cucumber feature file:
>
> When I go to "the statuses JSON url"
> Then I should find "....." # ['response']['code']
> And I should find "....." #['response']['requestId']
>
> With a step definition like:
>
> Then /^I should find "([^\"]*)"$/ do |the_string|
> json = ActiveSupport::JSON.decode(@response.body)
> assert_not_nil ...... #(something with the json obect and
> the_string) end
Do you want to cherry-pick individual pieces from the JSON, i.e. you
don't care about the exact response as long as the parts you're looking
for are there? Or would it be okay to check against a known good
response?
The latter case is easier. In the former case, how about a matcher that
checks the actual response is a superset of the expected response?
[...]
> Consider if I were dealing with XML instead of JSON - I could put an
> XPath expression in my "Then I should find" line, and in my step
> definition I could search the XML with the given XPath expression
> using hpricot or something. With JSON and it's resultant hash, I have
> no idea where to start...
There's JSONPath, but I don't think a Ruby implementation exists. If you
always have "definite" paths without wildcards and recursion(?) then you
might be able to do with some simple code like this
When I go to "the statuses JSON url"
Then I should find "response.code"
Then /^I should find "([^\"]*)"$/ do |the_string|
json = ActiveSupport::JSON.decode(@response.body)
obj = traverse(json, the_string)
assert_not_nil obj
end
def traverse(json, path)
path.split('.').inject(json) do |value, selector|
value = value[selector]
end
rescue
nil
end
Michael
--
Michael Schuerig
mailto:[email protected]
http://www.schuerig.de/michael/
_______________________________________________
rspec-users mailing list
[email protected]
http://rubyforge.org/mailman/listinfo/rspec-users
