require 'spec_helper'
require 'tailor/rulers/spaces_before_rbrace_ruler'

describe Tailor::Rulers::SpacesBeforeRbraceRuler do
  subject { Tailor::Rulers::SpacesBeforeRbraceRuler.new(nil, {}) }
  before { Tailor::Logger.stub(:log) }

  describe '#count_spaces' do
    context 'lexed_line.event_index is 0' do
      let(:lexed_line) do
        l = double 'LexedLine'
        l.stub(:event_index).and_return 0
        l.stub(:at).and_return nil

        l
      end

      specify { subject.count_spaces(lexed_line, 1).should be_zero }

      it 'sets @do_measurement to false' do
        expect { subject.count_spaces(lexed_line, 1) }.
          to change{subject.instance_variable_get(:@do_measurement)}.from(true).
          to(false)
      end
    end

    context 'no space before rbrace' do
      let(:lexed_line) do
        l = double 'LexedLine'
        l.stub(:event_index).and_return 1
        l.stub(:at).and_return [[10, 0], :on_const, 'HI']

        l
      end

      specify { subject.count_spaces(lexed_line, 1).should be_zero }
    end

    context '1 space before rbrace' do
      let(:lexed_line) do
        l = double 'LexedLine'
        l.stub(:event_index).and_return 1
        l.stub(:at).and_return [[10, 0], :on_sp, ' ']

        l
      end

      specify { subject.count_spaces(lexed_line, 1).should == 1 }
    end

    context '> 1 space before rbrace' do
      let(:lexed_line) do
        l = double 'LexedLine'
        l.stub(:event_index).and_return 1
        l.stub(:at).and_return [[10, 0], :on_sp, '  ']

        l
      end

      specify { subject.count_spaces(lexed_line, 1).should == 2 }
    end
  end
end