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

RSpec.describe FeduxOrgStdlib::VersionManagement::RubygemVersionFile do
  context '#to_s' do
    it 'outputs the content for version file' do
      version = double('Version')
      expect(version).to receive(:to_s).and_return('0.0.0')

      library = double('RubyLibrary')
      expect(library).to receive(:module_names).and_return([ 'MyLibrary' ])

      version_file = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.new(version, library)
      expect(version_file.to_s).to eq(<<-EOS.strip_heredoc
                                        # encoding: utf-8
                                        # MyLibrary
                                        module MyLibrary
                                          VERSION = '0.0.0'
                                        end
                                        EOS
                                     )
    end

    it 'outputs the content for version file for a more deeply nested module' do
      version = double('Version')
      expect(version).to receive(:to_s).and_return('0.0.0')

      library = double('RubyLibrary')
      expect(library).to receive(:module_names).and_return([ 'MyLibrary', 'MyClass' ])

      version_file = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.new(version, library)
      expect(version_file.to_s).to eq(<<-EOS.strip_heredoc
                                        # encoding: utf-8
                                        # MyLibrary
                                        module MyLibrary
                                          module MyClass
                                            VERSION = '0.0.0'
                                          end
                                        end
                                        EOS
                                     )
    end
  end

  context '#write' do
    it 'writes the generated version file to disk' do
      version = double('Version')
      expect(version).to receive(:to_s).and_return('0.0.0')

      library = double('RubyLibrary')
      expect(library).to receive(:module_names).and_return([ 'MyLibrary', 'MyClass' ])
      version_file = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.new(version, library)

      switch_to_working_directory do
        version_file.write('version.rb')
        expect(File).to be_exists('version.rb')
      end
    end

    context '#read' do
      it 'reads a version file and handover parsing to parser' do
        version = double('Version')
        library = double('Library')

        version_builder = double('VersionBuilder')
        expect(version_builder).to receive(:build_from).with('0.0.0').and_return(version) 

        library_builder = double('LibraryBuilder')
        expect(library_builder).to receive(:build_from).with([ 'MyModule' ]).and_return(library) 

        parser = double('Parser')
        expect(parser).to receive(:parse)
        expect(parser).to receive(:version).and_return('0.0.0')
        expect(parser).to receive(:modules).and_return([ 'MyModule' ])

        version_file = create_file('version.rb', <<-EOS.strip_heredoc
                                 # encoding: utf-8
                                 # MyLibrary
                                 module MyLibrary
                                   VERSION = '0.0.0'
                                 end
                                 EOS
                              )

        result = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.read(version_file, parser, version_builder, library_builder)

        expect(result).to be_kind_of(FeduxOrgStdlib::VersionManagement::RubygemVersionFile)
      end
    end

    context '#version' do
      it "returns the version for the file" do
        version = double('Version')
        expect(version).to receive(:to_s).and_return('0.0.0')

        library = double('RubyLibrary')

        version_file = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.new(version, library)
        expect(version_file.version).to eq('0.0.0')
      end
    end

    context '#bump' do
      it "bumps versions" do
        version = double('Version')
        expect(version).to receive(:bump).with(:major)
        expect(version).to receive(:to_s).and_return('1.0.0')

        library = double('RubyLibrary')

        version_file = FeduxOrgStdlib::VersionManagement::RubygemVersionFile.new(version, library)
        version_file.bump(:major)

        expect(version_file.version).to eq('1.0.0')
      end
    end
  end
end