# encoding: utf-8
require 'spec_helper'
require 'fedux_org_stdlib/version_management/rubygem_version_file_parser'

RSpec.describe FeduxOrgStdlib::VersionManagement::RubygemVersionFileParser do
  let(:parser) { FeduxOrgStdlib::VersionManagement::RubygemVersionFileParser.new }

  context '#parse' do
    it 'extracts version number' do
      version_file = create_file('version.rb', <<-EOS.strip_heredoc
                                 #main MyLibrary
                                 module MyLibrary
                                   VERSION = '0.0.0'
                                 end
                                 EOS
                               )

      parser.parse(version_file)

      expect(parser.version).to eq('0.0.0')
    end

    it 'extracts modules' do
      version_file = create_file('version.rb', <<-EOS.strip_heredoc
                                 #main MyLibrary
                                 module MyLibrary
                                   VERSION = '0.0.0'
                                 end
                                 EOS
                               )

      parser.parse(version_file)

      expect(parser.modules).to eq([ 'MyLibrary' ])
    end

    it 'extracts nested modules as well' do
      version_file = create_file('version.rb', <<-EOS.strip_heredoc
                                 #main MyLibrary
                                 module MyLibrary
                                   module MyClass
                                     VERSION = '0.0.0'
                                   end
                                 end
                                 EOS
                               )

      parser.parse(version_file)

      expect(parser.modules).to eq([ 'MyLibrary', 'MyClass' ])
    end

    it 'fails if version cannot be extracted' do
      version_file = create_file('version.rb', <<-EOS.strip_heredoc
                                 #main MyLibrary
                                 EOS
                               )

      expect {
        parser.parse(version_file)
      }.to raise_error VersionManagement::Exceptions::VersionFileInvalid
    end
  end
end