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require File.dirname(__FILE__) + '/abstract_unit'
module InvocationTest
class API < ActionWebService::API::Base
api_method :add, :expects => [:int, :int], :returns => [:int]
api_method :transmogrify, :expects_and_returns => [:string]
api_method :fail_with_reason
api_method :fail_generic
api_method :no_before
api_method :no_after
api_method :only_one
api_method :only_two
end
class Interceptor
attr :args
def initialize
@args = nil
end
def intercept(*args)
@args = args
end
end
InterceptorClass = Interceptor.new
class Service < ActionController::Base
web_service_api API
before_invocation :intercept_before, :except => [:no_before]
after_invocation :intercept_after, :except => [:no_after]
prepend_after_invocation :intercept_after_first, :except => [:no_after]
prepend_before_invocation :intercept_only, :only => [:only_one, :only_two]
after_invocation(:only => [:only_one]) do |*args|
args[0].instance_variable_set('@block_invoked', args[1])
end
after_invocation InterceptorClass, :only => [:only_one]
attr_accessor :before_invoked
attr_accessor :after_invoked
attr_accessor :after_first_invoked
attr_accessor :only_invoked
attr_accessor :block_invoked
attr_accessor :invocation_result
def initialize
@before_invoked = nil
@after_invoked = nil
@after_first_invoked = nil
@only_invoked = nil
@invocation_result = nil
@block_invoked = nil
end
def add(a, b)
a + b
end
def transmogrify(str)
str.upcase
end
def fail_with_reason
end
def fail_generic
end
def no_before
5
end
def no_after
end
def only_one
end
def only_two
end
protected
def intercept_before(name, args)
@before_invoked = name
return [false, "permission denied"] if name == :fail_with_reason
return false if name == :fail_generic
end
def intercept_after(name, args, result)
@after_invoked = name
@invocation_result = result
end
def intercept_after_first(name, args, result)
@after_first_invoked = name
end
def intercept_only(name, args)
raise "Interception error" unless name == :only_one || name == :only_two
@only_invoked = name
end
end
end
class TC_Invocation < Test::Unit::TestCase
include ActionWebService::Invocation
def setup
@service = InvocationTest::Service.new
end
def test_invocation
assert(perform_invocation(:add, 5, 10) == 15)
assert(perform_invocation(:transmogrify, "hello") == "HELLO")
assert_raises(NoMethodError) do
perform_invocation(:nonexistent_method_xyzzy)
end
end
def test_interceptor_registration
assert(InvocationTest::Service.before_invocation_interceptors.length == 2)
assert(InvocationTest::Service.after_invocation_interceptors.length == 4)
assert_equal(:intercept_only, InvocationTest::Service.before_invocation_interceptors[0])
assert_equal(:intercept_after_first, InvocationTest::Service.after_invocation_interceptors[0])
end
def test_interception
assert(@service.before_invoked.nil?)
assert(@service.after_invoked.nil?)
assert(@service.only_invoked.nil?)
assert(@service.block_invoked.nil?)
assert(@service.invocation_result.nil?)
perform_invocation(:add, 20, 50)
assert(@service.before_invoked == :add)
assert(@service.after_invoked == :add)
assert(@service.invocation_result == 70)
end
def test_interception_canceling
reason = nil
perform_invocation(:fail_with_reason){|r| reason = r}
assert(@service.before_invoked == :fail_with_reason)
assert(@service.after_invoked.nil?)
assert(@service.invocation_result.nil?)
assert(reason == "permission denied")
reason = true
@service.before_invoked = @service.after_invoked = @service.invocation_result = nil
perform_invocation(:fail_generic){|r| reason = r}
assert(@service.before_invoked == :fail_generic)
assert(@service.after_invoked.nil?)
assert(@service.invocation_result.nil?)
assert(reason == true)
end
def test_interception_except_conditions
perform_invocation(:no_before)
assert(@service.before_invoked.nil?)
assert(@service.after_first_invoked == :no_before)
assert(@service.after_invoked == :no_before)
assert(@service.invocation_result == 5)
@service.before_invoked = @service.after_invoked = @service.invocation_result = nil
perform_invocation(:no_after)
assert(@service.before_invoked == :no_after)
assert(@service.after_invoked.nil?)
assert(@service.invocation_result.nil?)
end
def test_interception_only_conditions
assert(@service.only_invoked.nil?)
perform_invocation(:only_one)
assert(@service.only_invoked == :only_one)
assert(@service.block_invoked == :only_one)
assert(InvocationTest::InterceptorClass.args[1] == :only_one)
@service.only_invoked = nil
perform_invocation(:only_two)
assert(@service.only_invoked == :only_two)
end
private
def perform_invocation(method_name, *args, &block)
@service.perform_invocation(method_name, args, &block)
end
end
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