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

require 'reek/object_refs'

include Reek

describe ObjectRefs, 'when empty' do
  before(:each) do
    @refs = ObjectRefs.new
  end

  it 'should report one ref to self' do
    @refs.refs_to_self.should == 1
  end
end

describe ObjectRefs, 'with no refs to self' do
  before(:each) do
    @refs = ObjectRefs.new
    @refs.record_ref('a')
    @refs.record_ref('b')
    @refs.record_ref('a')
  end

  it 'should report no refs to self' do
    @refs.refs_to_self.should == 1
  end

  it 'should report :a as the max' do
    @refs.max_keys.should == ['a']
  end

  it 'should not report self as the max' do
    @refs.self_is_max?.should == false
  end
end

describe ObjectRefs, 'with one ref to self' do
  before(:each) do
    @refs = ObjectRefs.new
    @refs.record_ref('a')
    @refs.record_ref('b')
    @refs.record_ref('a')
    @refs.record_reference_to_self
  end

  it 'should report 1 ref to self' do
    @refs.refs_to_self.should == 2
  end

  it 'should report self among the max' do
    @refs.max_keys.should be_include('a')
    @refs.max_keys.should be_include(Sexp.from_array([:lit, :self]))
  end

  it 'should report self as the max' do
    @refs.self_is_max?.should == true
  end
end

describe ObjectRefs, 'with many refs to self' do
  before(:each) do
    @refs = ObjectRefs.new
    @refs.record_reference_to_self
    @refs.record_ref('a')
    @refs.record_reference_to_self
    @refs.record_ref('b')
    @refs.record_ref('a')
    @refs.record_reference_to_self
  end

  it 'should report all refs to self' do
    @refs.refs_to_self.should == 4
  end

  it 'should report self among the max' do
    @refs.max_keys.should == [Sexp.from_array([:lit, :self])]
  end

  it 'should report self as the max' do
    @refs.self_is_max?.should == true
  end
end

describe ObjectRefs, 'when self is not the only max' do
  before(:each) do
    @refs = ObjectRefs.new
    @refs.record_ref('a')
    @refs.record_reference_to_self
    @refs.record_ref('b')
    @refs.record_ref('a')
  end

  it 'should report all refs to self' do
    @refs.refs_to_self.should == 2
  end

  it 'should report self among the max' do
    @refs.max_keys.should be_include('a')
    @refs.max_keys.should be_include(Sexp.from_array([:lit, :self]))
  end

  it 'should report self as the max' do
    @refs.self_is_max?.should == true
  end
end

describe ObjectRefs, 'when self is not among the max' do
  before(:each) do
    @refs = ObjectRefs.new
    @refs.record_ref('a')
    @refs.record_ref('b')
    @refs.record_ref('a')
    @refs.record_ref('b')
  end

  it 'should report all refs to self' do
    @refs.refs_to_self.should == 1
  end

  it 'should not report self among the max' do
    @refs.max_keys.should be_include('a')
    @refs.max_keys.should be_include('b')
  end

  it 'should not report self as the max' do
    @refs.self_is_max?.should == false
  end
end