content_tag_spec.rb

# frozen_string_literal: true

RSpec.describe RuboCop::Cop::Rails::ContentTag, :config do
  subject(:cop) { described_class.new(config) }

  context 'Rails 5.0', :rails50 do
    it 'does not register an offense' do
      expect_no_offenses(<<~RUBY)
        content_tag(:p, 'Hello world!')
      RUBY
    end

    it 'does not register an offense with empty tag' do
      expect_no_offenses(<<~RUBY)
        content_tag(:br)
      RUBY
    end

    it 'does not register an offense with array of classnames' do
      expect_no_offenses(<<~RUBY)
        content_tag(:div, "Hello world!", class: ["strong", "highlight"])
      RUBY
    end

    it 'does not register an offense with nested content_tag' do
      expect_no_offenses(<<~RUBY)
        content_tag(:div) { content_tag(:strong, 'Hi') }
      RUBY
    end
  end

  context 'Rails 5.1', :rails51 do
    it 'corrects an offence' do
      expect_offense(<<~RUBY)
        content_tag(:p, 'Hello world!')
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag.p('Hello world!')
      RUBY
    end

    it 'corrects an offence with empty tag' do
      expect_offense(<<~RUBY)
        content_tag(:br)
        ^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag.br()
      RUBY
    end

    it 'corrects an offence with array of classnames' do
      expect_offense(<<~RUBY)
        content_tag(:div, "Hello world!", class: ["strong", "highlight"])
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag.div("Hello world!", class: ["strong", "highlight"])
      RUBY
    end

    it 'corrects an offence with nested content_tag' do
      expect_offense(<<~RUBY)
        content_tag(:div) { content_tag(:strong, 'Hi') }
                            ^^^^^^^^^^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
        ^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag.div() { tag.strong('Hi') }
      RUBY
    end

    it 'corrects an offence when first argument is hash' do
      expect_offense(<<~RUBY)
        content_tag({foo: 1})
        ^^^^^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag({foo: 1})
      RUBY
    end

    it 'corrects an offence when first argument is non-identifier string' do
      expect_offense(<<~RUBY)
        content_tag('foo-bar')
        ^^^^^^^^^^^^^^^^^^^^^^ Use `tag` instead of `content_tag`.
      RUBY
      expect_correction(<<~RUBY)
        tag('foo-bar')
      RUBY
    end

    it 'does not register an offence when `tag` is used with an argument' do
      expect_no_offenses(<<~RUBY)
        tag.p('Hello world!')
      RUBY
    end

    it 'does not register an offence when `tag` is used without arguments' do
      expect_no_offenses(<<~RUBY)
        tag.br
      RUBY
    end

    it 'does not register an offence when `tag` is used with arguments' do
      expect_no_offenses(<<~RUBY)
        tag.div("Hello world!", class: ["strong", "highlight"])
      RUBY
    end

    it 'does not register an offence when `tag` is nested' do
      expect_no_offenses(<<~RUBY)
        tag.div() { tag.strong('Hi') }
      RUBY
    end
  end
end