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execute arbitrary code (like {raise RestClient::RequestTimeout}) the moment vcr tries to access certain configurable uri('s)
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 Dependencies

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 Project Readme

vcr-uri-catcher

I have been using cucumber and VCR for quite a while now and what I was missing was a way to test network failures depite of the fact that those URI's were already recorded by VCR. This little gem provides just that.

usage

After requiring the gem in the features/support/vcr.rb somewhere

require 'vcr-uri-catcher'

you can use it in the cucumber test:

Feature: Using vcr-uri-catcher to fake a network error
  @vcr
  Scenario: Getting an error when i get a network timeout
    Given I get a network timeout
    When I visit one of the following uris:
      | uri                         |
      | https://github.com/mmolhoek |
    When I do:
      """ruby
      require 'rest_client'
      resource = RestClient::Resource.new("http://github.com/mmolhoek")
      request = resource.get()
      """
    Then I expect it to raise a RestClient::RequestTimeout error

using step definition:

Given(/^I get a network timeout$/) do
  URICatcher::execute {raise RestClient::RequestTimeout}
end

Here I tell URICatcher which code block should be executed when we get to the configured uri.
In this case we will raise an RestClient::RequestTimeout, that we want to test

When(/^I visit one of the following uris:$/) do |uris|
  uris.hashes.each do |row|
    URICatcher::when_visiting(row[:uri])
  end
end

You can enter a string or a regular expression to describe your uri

Given(/^I do:$/) do |code|
  begin
    eval code
  rescue => @error
  end
end

Here we catch the raised RestClient::RequestTimeout and put it in @error, so we can check it in the next step (or any other).

Then(/^I expect it to raise a (.*) error$/) do |error|
  expect(@error.class.to_s).to eq(error)
end

And finally, here we have the step to see what error it was.

testing

bundle
bundle exec cucumber

Contributing to vcr-uri-catcher

  • Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet.
  • Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it.
  • Fork the project.
  • Start a feature/bugfix branch.
  • Commit and push until you are happy with your contribution.
  • Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
  • Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.

what else

  • checkout Jeweler, which I use for this project. Perfect for making your project management (gem building, deployement, etc a breeze)

Copyright

Copyright (c) 2015 Mischa Molhoek. See LICENSE.txt for further details.