# encoding: utf-8

require 'spec_helper'

module Rubocop
  module Cop
    module Lint
      describe AssignmentInCondition do
        let(:cop) { AssignmentInCondition.new }
        before do
          AssignmentInCondition.config = { 'AllowSafeAssignment' => true }
        end

        it 'registers an offence for lvar assignment in condition' do
          inspect_source(cop,
                         ['if test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for lvar assignment in while condition' do
          inspect_source(cop,
                         ['while test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for lvar assignment in until condition' do
          inspect_source(cop,
                         ['until test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for ivar assignment in condition' do
          inspect_source(cop,
                         ['if @test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for clvar assignment in condition' do
          inspect_source(cop,
                         ['if @@test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for gvar assignment in condition' do
          inspect_source(cop,
                         ['if $test = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'registers an offence for constant assignment in condition' do
          inspect_source(cop,
                         ['if TEST = 10',
                          'end'
                         ])
          expect(cop.offences.size).to eq(1)
        end

        it 'accepts == in condition' do
          inspect_source(cop,
                         ['if test == 10',
                          'end'
                         ])
          expect(cop.offences).to be_empty
        end

        it 'accepts ||= in condition' do
          inspect_source(cop,
                         ['raise StandardError unless foo ||= bar'])
          expect(cop.offences).to be_empty
        end

        context 'safe assignment is allowed' do
          it 'accepts = in condition surrounded with braces' do
            inspect_source(cop,
                           ['if (test = 10)',
                            'end'
                           ])
            expect(cop.offences).to be_empty
          end

        end

        context 'safe assignment is not allowed' do
          before do
            AssignmentInCondition.config['AllowSafeAssignment'] = false
          end

          it 'does not accepts = in condition surrounded with braces' do
            inspect_source(cop,
                           ['if (test == 10)',
                           'end'
                           ])
            expect(cop.offences).to be_empty
          end
        end
      end
    end
  end
end