require 'test_helper'
require 'rubycritic/generators/html/view_helpers'
require 'pathname'

describe Rubycritic::ViewHelpers do
  context 'when the file is in the root directory' do
    let(:generator) { GeneratorDouble.new('foo.html') }

    describe '#file_path' do
      context 'when the other file is in the same directory' do
        it 'creates a relative path to a file' do
          generator.file_path('bar.html').to_s.must_equal 'bar.html'
        end
      end

      context 'when the other file is in a subdirectory' do
        it 'creates a relative path to a file' do
          generator.file_path('subdirectory/bar.html').to_s.must_equal 'subdirectory/bar.html'
        end
      end
    end

    describe '#asset_path' do
      it 'creates a relative path to an asset' do
        generator.asset_path('stylesheets/application.css').to_s
                 .must_equal 'assets/stylesheets/application.css'
      end
    end
  end

  context 'when the file is n directories deep' do
    let(:generator) { GeneratorDouble.new('lets/go/crazy/foo.html') }

    describe '#file_path' do
      context 'when the other file is in the same directory' do
        it 'creates a relative path to a file' do
          generator.file_path('lets/go/crazy/bar.html').to_s.must_equal 'bar.html'
        end
      end

      context 'when the other file is in the root directory' do
        it 'creates a relative path to a file' do
          generator.file_path('bar.html').to_s.must_equal '../../../bar.html'
        end
      end

      context 'when the other file has n-1 directories in common' do
        it 'creates a relative path to a file' do
          generator.file_path('lets/go/home/bar.html').to_s.must_equal '../home/bar.html'
        end
      end

      context 'when the other file is one directory deeper' do
        it 'creates a relative path to a file' do
          generator.file_path('lets/go/crazy/everybody/bar.html').to_s.must_equal 'everybody/bar.html'
        end
      end
    end

    describe '#asset_path' do
      it 'creates a relative path to an asset' do
        generator.asset_path('stylesheets/application.css').to_s
                 .must_equal '../../../assets/stylesheets/application.css'
      end
    end
  end
end

class GeneratorDouble
  include Rubycritic::ViewHelpers

  def initialize(file)
    @file = Pathname.new(file)
  end

  def file_directory
    root_directory + @file.dirname
  end

  def root_directory
    Pathname.new('root_directory')
  end
end