# Copyright: Copyright 2009 Topic Maps Lab, University of Leipzig.
# License:   Apache License, Version 2.0

require File.dirname(__FILE__) + '/../../../spec_helper'

module RTM::Navigation::Association
  describe self do
    before(:each) do
      @tm = get_used_tm_sys_tm
    end
    after(:each) do
      @tm.close
    end
    
    describe "#players" do
      before(:each) do
        @assoc = @tm.create_association("assoc_type")
      end
      it "give back no players if the association has no players" do
        @assoc.should have(0).players
      end
      it "give back all players of the association" do
        @assoc.create_role("role_type","role_player")       
        @assoc.should have(1).players
        @tm.get("role_player").should_not be_nil
        @assoc.players.should include @tm.get("role_player")
      end
      it "should give back a player as many times as it plays a role in the association" do
        @assoc.create_role("country","germany")
        @assoc.should have(1).players
        @tm.get("germany").should_not be_nil
        @assoc.players.should include @tm.get("germany")
        @assoc.create_role("neighbour_country","germany")
        @assoc.should have(2).players
        @assoc.players.should include @tm.get("germany")
      end
      it "should give back players whose roletype equals the optional argument" do
        @assoc.create_role("country","germany")
        @assoc.create_role("country","france")
        @assoc.create_role("neighbouring_country","switzerland")
        @assoc.should have(3).players
        @assoc.players("country").size.should == 2
        @assoc.players("neighbouring_country").size.should == 1
      end
      it "should give back an empty result if no role with the specified role type exists" do
        @assoc.create_role("country","germany")
        @assoc.create_role("country","france")
        @assoc.create_role("neighbouring_country","switzerland")
        @assoc.players("countries").should be_empty
      end
      it "should give back a container" do
        @assoc.players.should respond_to(:each)
        @assoc.players.should_not be_a_kind_of String
      end
    end
    
  end
end