require "#{File.dirname __FILE__}/helper"
require "vresource/class_loader"

describe "ClassLoader" do  
  ClassLoader = VResource::ClassLoader
  
  before :all do
    @original_dir = "#{File.dirname(__FILE__)}/class_loader_spec_data"
    @dir = "#{File.dirname(__FILE__)}/class_loader_spec"
    
    FileUtils.rm_r @dir if File.exist? @dir
    FileUtils.cp_r @original_dir, @dir
    
    @provider = VResource::FileSystemProvider.new(@dir)
    VResource.add_resource_provider @provider
    VResource.hook!
  end
  
  after :all do
    VResource.unhook!
    FileUtils.rm_r @dir if File.exist? @dir
    [:LoadCount, :ModuleA, :ScopeA].each{|c| Object.send :remove_const, c if Object.const_defined? c}    
  end

  it "should load classes only one time" do
    class CustomObserver
      attr_reader :list
      def initialize
        @list = []
      end
      
      def update_class klass
        @list << klass
      end
    end
    obs = CustomObserver.new
    ClassLoader.add_observer obs
    
    ::LoadCount
    ::LoadCount
    ClassLoader.delete_observers
    
    obs.list.inject(0){|count, klass| klass == ::LoadCount ? count + 1 : count}.should == 1
  end
  
  it "should load classes from multiple directories"
  
  it "class should have the same name as package" do
    ::ModuleA::SameName
    ::ModuleA::SameName::SomeClass
  end
  
  it "infinity loop" do
    lambda{ModuleA::InfinityLoop}.should raise_error(/Class Name .+ doesn't correspond to File Name/)
  end
  
  it "core" do
    ::ModuleA::ModuleB::ClassC.new
  end
  
  module ::ModuleA
    class << self
      def anonymous
        ClassInsideAnonymousClass
      end
    end
  end
  
  it "Should works inside Anonymous Class" do
    ::ModuleA.anonymous
  end
  
  it "should raise exception if class isn't defined in scope" do
    ::ScopeA::ScopeA1
    ClassLoader.error_on_defined_constant = true
    lambda{::ScopeA::ScopeB1}.should raise_error(/Class '.+' is not defined in the '.+' Namespace!/)
  end

  it "Class Reloading" do
    fname = "#{@dir}/ModuleA/ClassReloading.rb"
    File.write fname, %{\
class ClassReloading
def test
  1
end
end}

    test = ::ModuleA::ClassReloading.new
    test.test.should == 1

    File.write fname, %{\
class ClassReloading
def test
  2
end
end}

    ClassLoader.reload_class(::ModuleA::ClassReloading.name)
    test.test.should == 2
  end
end