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#--
# =============================================================================
# Copyright (c) 2004, Jamis Buck (jgb3@email.byu.edu)
# All rights reserved.
#
# This source file is distributed as part of the Needle dependency injection
# library for Ruby. This file (and the library as a whole) may be used only as
# allowed by either the BSD license, or the Ruby license (or, by association
# with the Ruby license, the GPL). See the "doc" subdirectory of the Needle
# distribution for the texts of these licenses.
# -----------------------------------------------------------------------------
# needle website : http://needle.rubyforge.org
# project website: http://rubyforge.org/projects/needle
# =============================================================================
#++
$:.unshift "../lib"
require 'needle/interceptor-chain'
require 'test/unit'
require 'ostruct'
class TC_InterceptorChainElement < Test::Unit::TestCase
class Interceptor
attr_reader :next_obj
attr_reader :context
def process( next_obj, context )
@next_obj = next_obj
@context = context
end
end
def test_process_next
interceptor = Interceptor.new
element =
Needle::InterceptorChainBuilder::InterceptorChainElement.new interceptor
element.next = :next_obj
element.process_next :context
assert_equal :next_obj, interceptor.next_obj
assert_equal :context, interceptor.context
end
end
class TC_ProxyObjectChainElement < Test::Unit::TestCase
Context = Struct.new( :sym, :args, :block )
class ProxyObject
attr_reader :args
attr_reader :value
def invoke( *args, &block )
@args = args
@value = block.call
end
end
def test_process_next
obj = ProxyObject.new
element = Needle::InterceptorChainBuilder::ProxyObjectChainElement.new obj
ctx = Context.new( :invoke, [ 1, 2, 3 ], proc { "value" } )
element.process_next( ctx )
assert_equal [ 1, 2, 3 ], obj.args
assert_equal "value", obj.value
end
end
class TC_InterceptorChainBuilder < Test::Unit::TestCase
class Interceptor
def initialize( point, opts, name=nil )
@opts = opts
@name = name
end
def process( chain, context )
@opts[:hash][:chain] << @opts[:name]
@opts[:hash][:sym] = context.sym
@opts[:hash][:args] = context.args.length
@opts[:hash][:has_block] = !context.block.nil?
chain.process_next( context )
end
end
def setup
@point = OpenStruct.new
end
def test_nil
service = Object.new
service2 = Needle::InterceptorChainBuilder.build( @point, service, nil )
assert_same service, service2
end
def test_none
service = Object.new
service2 = Needle::InterceptorChainBuilder.build( @point, service, [] )
assert_same service, service2
end
def test_one
service = Hash.new
data = { :chain=>[] }
interceptors = [
OpenStruct.new( :action=>proc { Interceptor },
:options=> { :hash=>data } )
]
service2 = Needle::InterceptorChainBuilder.build( @point, service, interceptors )
assert_instance_of(
Needle::InterceptorChainBuilder::InterceptedServiceProxy, service2 )
service2.length
assert_equal :length, data[:sym]
assert_equal 0, data[:args]
assert !data[:has_block]
service2[:hello] = :something
assert_equal :[]=, data[:sym]
assert_equal 2, data[:args]
assert !data[:has_block]
service2.each_key { |k| }
assert_equal :each_key, data[:sym]
assert_equal 0, data[:args]
assert data[:has_block]
end
def test_many
service = Hash.new
chain = []
data = Array.new( 4 ) { { :chain=>chain } }
interceptors = [
OpenStruct.new( :action=>proc { Interceptor },
:options=>{ :hash=>data[0], :priority=>5, :name=>"A" } ),
OpenStruct.new( :action=>proc { Interceptor },
:options=>{ :hash=>data[1], :priority=>3, :name=>"B" } ),
OpenStruct.new( :action=>proc { Interceptor },
:options=>{ :hash=>data[2], :priority=>7, :name=>"C" } ),
OpenStruct.new( :action=>proc { Interceptor },
:options=>{ :hash=>data[3], :priority=>5, :name=>"D" } )
]
service2 = Needle::InterceptorChainBuilder.build( @point, service, interceptors )
expect_chain = [ "B", "A", "D", "C" ]
service2.length
4.times do |i|
assert_equal :length, data[i][:sym]
assert_equal 0, data[i][:args]
assert !data[i][:has_block]
end
assert_equal expect_chain, chain
chain.clear
service2[:hello] = :something
4.times do |i|
assert_equal :[]=, data[i][:sym]
assert_equal 2, data[i][:args]
assert !data[i][:has_block]
end
assert_equal expect_chain, chain
chain.clear
service2.each_key { |k| }
4.times do |i|
assert_equal :each_key, data[i][:sym]
assert_equal 0, data[i][:args]
assert data[i][:has_block]
end
assert_equal expect_chain, chain
end
end
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