multiline_array_brace_layout_spec.rb

# frozen_string_literal: true

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

  let(:cop_config) { { 'EnforcedStyle' => 'symmetrical' } }

  it 'ignores implicit arrays' do
    expect_no_offenses(<<~RUBY)
      foo = a,
      b
    RUBY
  end

  it 'ignores single-line arrays' do
    expect_no_offenses('[a, b, c]')
  end

  it 'ignores empty arrays' do
    expect_no_offenses('[]')
  end

  it_behaves_like 'multiline literal brace layout' do
    let(:open) { '[' }
    let(:close) { ']' }
  end

  it_behaves_like 'multiline literal brace layout method argument' do
    let(:open) { '[' }
    let(:close) { ']' }
    let(:a) { 'a: 1' }
    let(:b) { 'b: 2' }
  end

  it_behaves_like 'multiline literal brace layout trailing comma' do
    let(:open) { '[' }
    let(:close) { ']' }
  end

  context 'when comment present before closing brace' do
    it 'corrects closing brace without crashing' do
      expect_offense(<<~RUBY)
        {
          first_key: ['value a', # comment 1
                      'value b'  # comment 2
          ],
          ^ The closing array brace must be on the same line as the last array element when the opening brace is on the same line as the first array element.
          second_key: 'value c'
        }
      RUBY

      expect_correction(<<~RUBY)
        {
          first_key: ['value a', # comment 1
                      'value b'],  # comment 2
          second_key: 'value c'
        }
      RUBY
    end
  end
end