require 'spec'
require 'ruby_ext'
require "#{File.dirname __FILE__}/../../lib/mongo_mapper_ext/plugins/default_scope"
require "mongo_mapper"

describe "MongoMapper Default Scope" do
  before :all do
    MongoMapper.database = 'test'
  end
  
  before :each do 
    class ::ScopeSample
      include MongoMapper::Document
      plugin MongoMapper::Plugins::DefaultScope
      
      key :name, String
    end
    
    ScopeSample.delete_all
    ScopeSample.create! :name => 'a'
    ScopeSample.create! :name => 'b'
  end
  
  after :each do 
    Object.send :remove_const, :ScopeSample if Object.const_defined? :ScopeSample
  end
    
  it "should not affect objects without default_scope" do
    ScopeSample.count.should == 2
    ScopeSample.all.count.should == 2
  end
  
  it "default_scope" do
    ScopeSample.send :default_scope, :name => 'a'
    ScopeSample.count.should == 1
    ScopeSample.all.count.should == 1
    ScopeSample.first.name.should == 'a'
  end
  
  it "default_scope as block" do
    ScopeSample.send :default_scope do
      {:name => 'a'}
    end
    ScopeSample.count.should == 1
    ScopeSample.all.count.should == 1
    ScopeSample.first.name.should == 'a'
  end
  
  it "default_scope should be inherited" do
    ScopeSample.send :default_scope, :name => 'a'
    class ScopeSampleAncestor < ScopeSample
    end
        
    ScopeSampleAncestor.count.should == 1
    ScopeSampleAncestor.all.count.should == 1
    ScopeSampleAncestor.first.name.should == 'a'
  end
  
  it "ancestors should be able to override default_scope" do
    ScopeSample.send :default_scope, :name => 'a'
    class ScopeSampleAncestor2 < ScopeSample
      default_scope :name => 'b'
    end
        
    ScopeSampleAncestor2.count.should == 1
    ScopeSampleAncestor2.all.count.should == 1
    ScopeSampleAncestor2.first.name.should == 'b'
  end
  
  it "shouldn't allow to nest with_exclusive_scope" do
    lambda{
      ScopeSample.with_exclusive_scope do
        ScopeSample.with_exclusive_scope{}
      end
    }.should raise_error(AssertionError)
    
    lambda{
      ScopeSample.with_exclusive_scope do
        ScopeSample.with_scope{}
      end
    }.should raise_error(AssertionError)
  end
      
  it "with_exclusive_scope should clear other scopes" do
    ScopeSample.send :default_scope, :name => 'a'
    
    ScopeSample.with_scope :name => 'a' do
      ScopeSample.with_exclusive_scope :name => 'b' do        
        ScopeSample.count.should == 1
        ScopeSample.first.name.should == 'b'
      end
    end
  end
  
  it "with_scope" do
    ScopeSample.with_scope :name => 'a' do
      ScopeSample.count.should == 1
      ScopeSample.first.name.should == 'a'
    end
  end
  
  it "with scope should merge scope" do
    ScopeSample.class_eval do
      key :name2, String
      key :name3, String
      default_scope :name => 'a'
    end
    ScopeSample.create! :name => 'a', :name2 => 'a2', :name3 => 'a3'
    ScopeSample.create! :name => 'b', :name2 => 'b2', :name3 => 'b3'
    
    ScopeSample.with_scope :name2 => 'a2' do
      ScopeSample.with_scope :name3 => 'a3' do
        ScopeSample.count.should == 1
        ScopeSample.first.name2.should == 'a2'
      end
    end
  end
end