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require 'spec_helper'
describe Unparser::Comments, '#take_before' do
let(:ast) { ast_and_comments[0] }
let(:comments) { ast_and_comments[1] }
let(:object) { described_class.new(comments) }
context 'usual case' do
let(:ast_and_comments) do
Unparser.parse_with_comments(<<~'RUBY')
def hi # EOL 1
# comment
end # EOL 2
RUBY
end
it 'should return no comments if none are before the node' do
expect(object.take_before(ast, :expression)).to eql([])
end
it 'should return only the comments that are before the specified part of the node' do
expect(object.take_before(ast, :end)).to eql(comments.first(2))
expect(object.take_all).to eql([comments[2]])
end
end
context 'when node does not respond to source part' do
let(:ast_and_comments) do
Unparser.parse_with_comments(<<~'RUBY')
expression ? :foo : :bar # EOL 1
# EOL 2
RUBY
end
it 'should return no comments if none are before the node' do
expect(object.take_before(ast, :expression)).to eql([])
end
it 'should return only the comments that are before the specified part of the node' do
expect(object.take_before(ast, :end)).to eql([])
end
end
end
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