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Marcelo de Moraes Serpa

2009-Nov-16 03:50 UTC

[rspec-users] Stub a call that happens inside a block

Hello list,

I had a hard time to find out a way to mock the singleton feed method of the
following class:
class RssReader

  def self.feed(feed_url)
    output = []
    open(feed_url) do |http|
      response = http.read
      result = RSS::Parser.parse(response, false)
      result.items.each_with_index do |item, i|
        output << {:title => item.title, :description =>
item.description,
:pubDate => item.pubDate, :link => item.link}
      end unless result.nil?
    end
    output
  end
end

Since it is being passed a block, I could not intercept the code inside the
block, the specific code I''d like to stub is the http.read. I have
tried to
do:

Http.should_receive(:read).and_return(xml) #xml being a fixture, loaded from
a file.

However, the stub is not applied.

Any ideas on how this could be solved? The only way I could think is to
avoid using the block...

Thanks,

Marcelo.
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David Chelimsky

2009-Nov-16 04:13 UTC

head link

[rspec-users] Stub a call that happens inside a block

On Sun, Nov 15, 2009 at 7:50 PM, Marcelo de Moraes Serpa <
celoserpa at gmail.com> wrote:
> Hello list,
>
> I had a hard time to find out a way to mock the singleton feed method of
> the following class:
> class RssReader
>
>   def self.feed(feed_url)
>     output = []
>     open(feed_url) do |http|
>       response = http.read
>       result = RSS::Parser.parse(response, false)
>       result.items.each_with_index do |item, i|
>         output << {:title => item.title, :description =>
item.description,
> :pubDate => item.pubDate, :link => item.link}
>       end unless result.nil?
>     end
>     output
>   end
> end
>
>Try this:

describe "..." do
  it "..." do
    http = mock(''http'')
   
RssReader.should_receive(:open).with(''http://this.url'')and_yield(http)
    http.should_receive(:read) ....
    ...
    RssReader.feed(''http://this.url'')
  end
end

Make sense?

David

> Since it is being passed a block, I could not intercept the code inside the
> block, the specific code I''d like to stub is the http.read. I have
tried to
> do:
>
> Http.should_receive(:read).and_return(xml) #xml being a fixture, loaded
> from a file.
>
> However, the stub is not applied.
>
> Any ideas on how this could be solved? The only way I could think is to
> avoid using the block...
>
> Thanks,
>
> Marcelo.
>
>
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
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Marcelo de Moraes Serpa

2009-Nov-16 05:05 UTC

head link

[rspec-users] Stub a call that happens inside a block

Yeah, thanks David :)

On Sun, Nov 15, 2009 at 10:13 PM, David Chelimsky <dchelimsky at
gmail.com>wrote:
> On Sun, Nov 15, 2009 at 7:50 PM, Marcelo de Moraes Serpa <
> celoserpa at gmail.com> wrote:
>
>> Hello list,
>>
>> I had a hard time to find out a way to mock the singleton feed method
of
>> the following class:
>> class RssReader
>>
>>   def self.feed(feed_url)
>>     output = []
>>     open(feed_url) do |http|
>>       response = http.read
>>       result = RSS::Parser.parse(response, false)
>>       result.items.each_with_index do |item, i|
>>         output << {:title => item.title, :description =>
item.description,
>> :pubDate => item.pubDate, :link => item.link}
>>       end unless result.nil?
>>     end
>>     output
>>   end
>> end
>>
>>
> Try this:
>
> describe "..." do
>   it "..." do
>     http = mock(''http'')
>    
RssReader.should_receive(:open).with(''http://this.url'')and_yield(http)
>     http.should_receive(:read) ....
>     ...
>     RssReader.feed(''http://this.url'')
>   end
> end
>
> Make sense?
>
> David
>
>
>> Since it is being passed a block, I could not intercept the code inside
>> the block, the specific code I''d like to stub is the
http.read. I have tried
>> to do:
>>
>> Http.should_receive(:read).and_return(xml) #xml being a fixture, loaded
>> from a file.
>>
>> However, the stub is not applied.
>>
>> Any ideas on how this could be solved? The only way I could think is to
>> avoid using the block...
>>
>> Thanks,
>>
>> Marcelo.
>>
>>
>>
>> _______________________________________________
>> rspec-users mailing list
>> rspec-users at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/rspec-users
>>
>
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
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Marcelo de Moraes Serpa

2009-Nov-16 05:36 UTC

head link

[rspec-users] Stub a call that happens inside a block

Yes, thanks, David!

On Sun, Nov 15, 2009 at 10:13 PM, David Chelimsky <dchelimsky at
gmail.com>wrote:
> On Sun, Nov 15, 2009 at 7:50 PM, Marcelo de Moraes Serpa <
> celoserpa at gmail.com> wrote:
>
>> Hello list,
>>
>> I had a hard time to find out a way to mock the singleton feed method
of
>> the following class:
>> class RssReader
>>
>>   def self.feed(feed_url)
>>     output = []
>>     open(feed_url) do |http|
>>       response = http.read
>>       result = RSS::Parser.parse(response, false)
>>       result.items.each_with_index do |item, i|
>>         output << {:title => item.title, :description =>
item.description,
>> :pubDate => item.pubDate, :link => item.link}
>>       end unless result.nil?
>>     end
>>     output
>>   end
>> end
>>
>>
> Try this:
>
> describe "..." do
>   it "..." do
>     http = mock(''http'')
>    
RssReader.should_receive(:open).with(''http://this.url'')and_yield(http)
>     http.should_receive(:read) ....
>     ...
>     RssReader.feed(''http://this.url'')
>   end
> end
>
> Make sense?
>
> David
>
>
>> Since it is being passed a block, I could not intercept the code inside
>> the block, the specific code I''d like to stub is the
http.read. I have tried
>> to do:
>>
>> Http.should_receive(:read).and_return(xml) #xml being a fixture, loaded
>> from a file.
>>
>> However, the stub is not applied.
>>
>> Any ideas on how this could be solved? The only way I could think is to
>> avoid using the block...
>>
>> Thanks,
>>
>> Marcelo.
>>
>>
>>
>> _______________________________________________
>> rspec-users mailing list
>> rspec-users at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/rspec-users
>>
>
>
> _______________________________________________
> rspec-users mailing list
> rspec-users at rubyforge.org
> http://rubyforge.org/mailman/listinfo/rspec-users
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rspec users - Nov 2009 - Stub a call that happens inside a block

[rspec-users] Stub a call that happens inside a block

[rspec-users] Stub a call that happens inside a block

[rspec-users] Stub a call that happens inside a block

[rspec-users] Stub a call that happens inside a block