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module MonkeyPatches
extend self
module RSpecMacros
def without_monkey_patches(scope)
before(:each) { MonkeyPatches.disable!(scope) }
after(:each) { MonkeyPatches.enable!(scope) }
end
end
NET_HTTP_SINGLETON = class << Net::HTTP; self; end
MONKEY_PATCHES = [
[Net::BufferedIO, :initialize],
[Net::HTTP, :request],
[Net::HTTP, :connect],
[NET_HTTP_SINGLETON, :socket_type]
]
def enable!(scope)
case scope
when :all
MONKEY_PATCHES.each do |mp|
realias mp.first, mp.last, :with_monkeypatches
end
when :vcr
realias Net::HTTP, :request, :with_vcr
else raise ArgumentError.new("Unexpected scope: #{scope}")
end
end
def disable!(scope)
case scope
when :all
MONKEY_PATCHES.each do |mp|
realias mp.first, mp.last, :without_monkeypatches
end
when :vcr
realias Net::HTTP, :request, :without_vcr
else raise ArgumentError.new("Unexpected scope: #{scope}")
end
end
def init
# capture the monkey patched definitions so we can realias to them in the future
MONKEY_PATCHES.each do |mp|
capture_method_definition(mp.first, mp.last, false)
end
end
private
def capture_method_definition(klass, method, original)
klass.class_eval do
monkeypatch_methods = [
:with_vcr, :without_vcr,
:with_fakeweb, :without_fakeweb,
:with_webmock, :without_webmock
].select do |m|
method_defined?(:"#{method}_#{m}")
end
if original
if monkeypatch_methods.size > 0
raise "The following monkeypatch methods have already been defined #{method}: #{monkey_patch_methods.inspect}"
end
alias_name = :"#{method}_without_monkeypatches"
else
if monkeypatch_methods.size == 0
raise "No monkey patch methods have been defined for #{method}"
end
alias_name = :"#{method}_with_monkeypatches"
end
alias_method alias_name, method
end
end
# capture the original method definitions before the monkey patches have been defined
# so we can realias to the originals in the future
MONKEY_PATCHES.each do |mp|
capture_method_definition(mp.first, mp.last, true)
end
def realias(klass, method, alias_extension)
klass.class_eval { alias_method method, :"#{method}_#{alias_extension}" }
end
end
# Require all the HTTP libraries--these must be required before WebMock
# for WebMock to work with them.
require 'httpclient'
if RUBY_INTERPRETER == :mri
require 'patron'
require 'em-http-request'
require 'curb'
require 'typhoeus'
end
# The FakeWeb adapter must be required after WebMock's so
# that VCR's Net::HTTP monkey patch is loaded last.
# This allows us to disable it (i.e. by realiasing to
# the version of Net::HTTP's methods before it was loaded)
require 'vcr/http_stubbing_adapters/webmock'
require 'vcr/http_stubbing_adapters/fakeweb'
# All Net::HTTP monkey patches have now been loaded, so capture the
# appropriate method definitions so we can disable them later.
MonkeyPatches.init
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