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Feature: mock with an alternative framework
In addition to rspec, mocha, flexmock, and RR, you can choose an alternate
framework as the mocking framework. You (or the framework authors) just needs
to provide an adapter that hooks RSpec's events into those of the framework.
A mock framework adapter must expose three methods:
* `setup_mocks_for_rspec`
* called before each example is run
* `verify_mocks_for_rspec`
* called after each example is run
* this is where message expectation failures should result in an error with
the appropriate failure message
* `teardown_mocks_for_rspec`
* called after `verify_mocks_for_rspec`
* use this to clean up resources, restore objects to earlier state, etc
* guaranteed to run even if there are failures
Scenario: Mock with alternate framework
Given a file named "expector.rb" with:
"""ruby
class Expector
class << self
def expectors
@expectors ||= []
end
def clear_expectors
expectors.clear
end
def verify_expectors
expectors.each {|d| d.verify}
end
end
def initialize
self.class.expectors << self
end
def expectations
@expectations ||= []
end
def expect(message)
expectations << message.to_s
end
def verify
unless expectations.empty?
raise expectations.map {|e|
"expected #{e}, but it was never received"
}.join("\n")
end
end
private
def method_missing(name, *args, &block)
expectations.delete(name.to_s)
end
public
module RSpecAdapter
def setup_mocks_for_rspec
# no setup necessary
end
def verify_mocks_for_rspec
Expector.verify_expectors
end
def teardown_mocks_for_rspec
Expector.clear_expectors
end
end
end
"""
Given a file named "example_spec.rb" with:
"""ruby
require File.expand_path("../expector", __FILE__)
RSpec.configure do |config|
config.mock_framework = Expector::RSpecAdapter
end
RSpec.describe Expector do
it "passes when message is received" do
expector = Expector.new
expector.expect(:foo)
expector.foo
end
it "fails when message is received" do
expector = Expector.new
expector.expect(:foo)
end
end
"""
When I run `rspec example_spec.rb --format doc`
Then the exit status should be 1
And the output should contain "2 examples, 1 failure"
And the output should contain "fails when message is received (FAILED - 1)"
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