# encoding: utf-8

require 'spec_helper'

module Rubocop
  module Cop
    describe EmptyLiteral do
      let(:a) { EmptyLiteral.new }

      describe 'Empty Array' do
        it 'registers an offence for Array.new()' do
          inspect_source(a,
                         ['test = Array.new()'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::ARR_MSG])
        end

        it 'registers an offence for Array.new' do
          inspect_source(a,
                         ['test = Array.new'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::ARR_MSG])
        end

        it 'does not register an offence for Array.new(3)' do
          inspect_source(a,
                         ['test = Array.new(3)'])
          expect(a.offences).to be_empty
        end
      end

      describe 'Empty Hash' do
        it 'registers an offence for Hash.new()' do
          inspect_source(a,
                         ['test = Hash.new()'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::HASH_MSG])
        end

        it 'registers an offence for Hash.new' do
          inspect_source(a,
                         ['test = Hash.new'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::HASH_MSG])
        end

        it 'does not register an offence for Hash.new(3)' do
          inspect_source(a,
                         ['test = Hash.new(3)'])
          expect(a.offences).to be_empty
        end

        it 'does not register an offence for Hash.new { block }' do
          inspect_source(a,
                         ['test = Hash.new { block }'])
          expect(a.offences).to be_empty
        end
      end

      describe 'Empty String' do
        it 'registers an offence for String.new()' do
          inspect_source(a,
                         ['test = String.new()'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::STR_MSG])
        end

        it 'registers an offence for String.new' do
          inspect_source(a,
                         ['test = String.new'])
          expect(a.offences.size).to eq(1)
          expect(a.offences.map(&:message))
            .to eq([EmptyLiteral::STR_MSG])
        end

        it 'does not register an offence for String.new("top")' do
          inspect_source(a,
                         ['test = String.new("top")'])
          expect(a.offences).to be_empty
        end
      end

    end
  end
end