require 'spec_helper'

module Beaker
  describe Host do
    let(:options)  { @options ? @options : {} }
    let(:platform) { @platform ? { :platform => @platform } : {} }
    let(:host)    { make_host( 'name', options.merge(platform) ) }

    it 'creates a windows host given a windows config' do
      @platform = 'windows'
      expect( host ).to be_a_kind_of Windows::Host
    end

    it 'defaults to a unix host' do
      expect( host ).to be_a_kind_of Unix::Host
    end

    it 'can be read like a hash' do
      expect{ host['value'] }.to_not raise_error
    end

    it 'can be written like a hash' do
      host['value'] = 'blarg'
      expect( host['value'] ).to be === 'blarg'
    end

    describe "host types" do
      let(:options) { Beaker::Options::OptionsHash.new }

      it "can be a pe host" do
        options['type'] = 'pe'
        expect(host.is_pe?).to be_truthy
        expect(host.use_service_scripts?).to be_truthy
        expect(host.is_using_passenger?).to be_truthy
        expect(host.graceful_restarts?).to be_falsy
      end

      it "can be a foss-source host" do
        expect(host.is_pe?).to be_falsy
        expect(host.use_service_scripts?).to be_falsy
        expect(host.is_using_passenger?).to be_falsy
      end

      it "can be a foss-package host" do
        options['use-service'] = true
        expect(host.is_pe?).to be_falsy
        expect(host.use_service_scripts?).to be_truthy
        expect(host.is_using_passenger?).to be_falsy
        expect(host.graceful_restarts?).to be_falsy
      end

      it "can be a foss-packaged host using passenger" do
        host.uses_passenger!
        expect(host.is_pe?).to be_falsy
        expect(host.use_service_scripts?).to be_truthy
        expect(host.is_using_passenger?).to be_truthy
        expect(host.graceful_restarts?).to be_truthy
      end

      it 'can be an AIO host' do
        options['type'] = 'aio'
        expect(host.is_pe?).to be_falsy
        expect(host.use_service_scripts?).to be_falsy
        expect(host.is_using_passenger?).to be_falsy
      end

      it 'sets the paths correctly for an AIO host' do
        options['type'] = 'aio'
        expect(host['puppetvardir']).to be_nil
      end
    end

    describe "uses_passenger!" do
      it "sets passenger property" do
        host.uses_passenger!
        expect(host['passenger']).to be_truthy
        expect(host.is_using_passenger?).to be_truthy
      end

      it "sets puppetservice" do
        host.uses_passenger!('servicescript')
        expect(host['puppetservice']).to eq('servicescript')
      end

      it "sets puppetservice to apache2 by default" do
        host.uses_passenger!
        expect(host['puppetservice']).to eq('apache2')
      end
    end

    describe "graceful_restarts?" do
      it "is true if graceful-restarts property is set true" do
        options['graceful-restarts'] = true
        expect(host.graceful_restarts?).to be_truthy
      end

      it "is false if graceful-restarts property is set false" do
        options['graceful-restarts'] = false
        expect(host.graceful_restarts?).to be_falsy
      end

      it "is false if is_pe and graceful-restarts is nil" do
        options['type'] = 'pe'
        expect(host.graceful_restarts?).to be_falsy
      end

      it "is true if is_pe and graceful-restarts is true" do
        options['type'] = 'pe'
        options['graceful-restarts'] = true
        expect(host.graceful_restarts?).to be_truthy
      end

      it "falls back to passenger property if not pe and graceful-restarts is nil" do
        host.uses_passenger!
        expect(host.graceful_restarts?).to be_truthy
      end
    end

    describe "windows hosts" do
      describe "install_package" do
        let(:cygwin) { 'setup-x86.exe' }
        let(:cygwin64) { 'setup-x86_64.exe' }
        let(:package) { 'foo' }

        before(:each) do
          @platform = 'windows'
          allow( host ).to receive(:check_for_package).and_return(true)
        end

        context "testing osarchitecture" do

          before(:each) do
            expect( host ).to receive(:execute).with(/wmic os get osarchitecture/, anything).and_yield(success_osarch_check)
          end

          context "32 bit" do
            let(:success_osarch_check) { double(:success, :exit_code => 0, :stdout => '32-bit') }

            it "uses 32 bit cygwin" do
              expect( host ).to receive(:execute).with(/#{cygwin}.*#{package}/)
              host.install_package(package)
            end
          end

          context "64 bit" do
            let(:success_osarch_check) { double(:success, :exit_code => 0, :stdout => '64-bit') }

            it "uses 64 bit cygwin" do
              expect( host ).to receive(:execute).with(/#{cygwin64}.*#{package}/)
              host.install_package(package)
            end
          end
        end

        context "testing os name" do
          let(:failed_osarch_check) { double(:failed, :exit_code => 1) }

          before(:each) do
            expect( host ).to receive(:execute).with(/wmic os get osarchitecture/, anything).and_yield(failed_osarch_check)
            expect( host ).to receive(:execute).with(/wmic os get name/, anything).and_yield(name_check)
          end

          context "32 bit" do
            let(:name_check) { double(:failure, :exit_code => 1) }

            it "uses 32 bit cygwin" do
              expect( host ).to receive(:execute).with(/#{cygwin}.*#{package}/)
              host.install_package(package)
            end
          end

          context "64 bit" do
            let(:name_check) { double(:success, :exit_code => 0) }

            it "uses 64 bit cygwin" do
              expect( host ).to receive(:execute).with(/#{cygwin64}.*#{package}/)
              host.install_package(package)
            end
          end
        end
      end
    end

    describe "#add_env_var" do

      it "does nothing if the key/value pair already exists" do
        result = Beaker::Result.new(host, '')
        result.exit_code = 0
        expect( Beaker::Command ).to receive(:new).with("grep ^KEY=.*\\/my\\/first\\/value ~/.ssh/environment")
        expect( host ).to receive(:exec).once.and_return(result)

        host.add_env_var('key', '/my/first/value')
      end

      it "adds new line to environment file if no env var of that name already exists" do
        result = Beaker::Result.new(host, '')
        result.exit_code = 1
        expect( Beaker::Command ).to receive(:new).with("grep ^KEY=.*\\/my\\/first\\/value ~/.ssh/environment")
        expect( host ).to receive(:exec).and_return(result)
        expect( Beaker::Command ).to receive(:new).with(/grep \^KEY ~\/\.ssh\/environment/)
        expect( host ).to receive(:exec).and_return(result)
        expect( Beaker::Command ).to receive(:new).with("echo \"KEY=/my/first/value\" >> ~/.ssh/environment")
        host.add_env_var('key', '/my/first/value')
      end

      it "updates existing line in environment file when adding additional value to existing variable" do
        result = Beaker::Result.new(host, '')
        result.exit_code = 1
        expect( Beaker::Command ).to receive(:new).with("grep ^KEY=.*\\/my\\/first\\/value ~/.ssh/environment")
        expect( host ).to receive(:exec).and_return(result)
        result = Beaker::Result.new(host, '')
        result.exit_code = 0
        expect( Beaker::Command ).to receive(:new).with(/grep \^KEY ~\/\.ssh\/environment/)
        expect( host ).to receive(:exec).and_return(result)
        expect( Beaker::SedCommand ).to receive(:new).with('unix', 's/^KEY=/KEY=\\/my\\/first\\/value:/', '~/.ssh/environment')
        host.add_env_var('key', '/my/first/value')
      end

    end

    describe "#delete_env_var" do
      it "deletes env var" do
        expect( Beaker::SedCommand ).to receive(:new).with('unix', '/KEY=\\/my\\/first\\/value$/d', '~/.ssh/environment')
        expect( Beaker::SedCommand ).to receive(:new).with("unix", "s/KEY=\\(.*\\)[;:]\\/my\\/first\\/value/KEY=\\1/", "~/.ssh/environment")
        expect( Beaker::SedCommand ).to receive(:new).with("unix", "s/KEY=\\/my\\/first\\/value[;:]/KEY=/", "~/.ssh/environment")
        host.delete_env_var('key', '/my/first/value')
      end

    end

    describe "executing commands" do
      let(:command) { Beaker::Command.new('ls') }
      let(:host) { Beaker::Host.create('host', {}, make_host_opts('host', options.merge(platform))) }
      let(:result) { Beaker::Result.new(host, 'ls') }

      before :each do
        result.stdout = 'stdout'
        result.stderr = 'stderr'

        logger = double(:logger)
        allow( logger ).to receive(:host_output)
        allow( logger ).to receive(:debug)
        host.instance_variable_set :@logger, logger
        conn = double(:connection)
        allow( conn ).to receive(:execute).and_return(result)
        allow( conn ).to receive(:ip).and_return(host['ip'])
        allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
        allow( conn ).to receive(:hostname).and_return(host.name)
        host.instance_variable_set :@connection, conn
      end

      it 'takes a command object and a hash of options' do
        result.exit_code = 0
        expect{ host.exec(command, {}) }.to_not raise_error
      end

      it 'acts on the host\'s logger and connection object' do
        result.exit_code = 0
        expect( host.instance_variable_get(:@logger) ).to receive(:debug).at_least(1).times
        expect( host.instance_variable_get(:@connection) ).to receive(:execute).once
        host.exec(command)
      end

      it 'returns the result object' do
        result.exit_code = 0
        expect( host.exec(command) ).to be === result
      end

      it 'logs the amount of time spent executing the command' do
        result.exit_code = 0

        expect(host.logger).to receive(:debug).with(/executed in \d\.\d{2} seconds/)

        host.exec(command,{})
      end

      it 'raises a CommandFailure when an unacceptable exit code is returned' do
        result.exit_code = 7
        opts = { :acceptable_exit_codes => [0, 1] }

        expect { host.exec(command, opts) }.to raise_error(Beaker::Host::CommandFailure)
      end

      it 'raises a CommandFailure when an unacceptable exit code is returned and the accept_all_exit_codes flag is set to false' do
        result.exit_code = 7
        opts = {
          :acceptable_exit_codes => [0, 1],
          :accept_all_exit_codes => false
        }

        expect { host.exec(command, opts) }.to raise_error(Beaker::Host::CommandFailure)
      end

      it 'does not throw an error when an unacceptable exit code is returned and the accept_all_exit_codes flag is set' do
        result.exit_code = 7
        opts = {
          :acceptable_exit_codes  => [0, 1],
          :accept_all_exit_codes  => true
        }

        expect { host.exec(command, opts) }.to_not raise_error
      end

      context "controls the result objects logging" do
        it "and passes a test if the exit_code doesn't match the default :acceptable_exit_codes of 0" do
          result.exit_code = 0
          expect{ host.exec(command,{}) }.to_not raise_error
        end
        it "and fails a test if the exit_code doesn't match the default :acceptable_exit_codes of 0" do
          result.exit_code = 1
          expect{ host.exec(command,{}) }.to raise_error
        end
        it "and passes a test if the exit_code matches :acceptable_exit_codes" do
          result.exit_code = 0
          expect{ host.exec(command,{:acceptable_exit_codes => 0}) }.to_not raise_error
        end
        it "and fails a test if the exit_code doesn't match :acceptable_exit_codes" do
          result.exit_code = 0
          expect{ host.exec(command,{:acceptable_exit_codes => 1}) }.to raise_error
        end
        it "and passes a test if the exit_code matches one of the :acceptable_exit_codes" do
          result.exit_code = 127
          expect{ host.exec(command,{:acceptable_exit_codes => [1,127]}) }.to_not raise_error
        end
        it "and passes a test if the exit_code matches one of the range of :acceptable_exit_codes" do
          result.exit_code = 1
          expect{ host.exec(command,{:acceptable_exit_codes => (0..127)}) }.to_not raise_error
        end
      end
    end

    describe "#mkdir_p" do

      it "does the right thing on a bash host, identified as is_cygwin=true" do
        @options = {:is_cygwin => true}
        @platform = 'windows'
        result = double
        allow( result ).to receive( :exit_code ).and_return( 0 )
        allow( host ).to receive( :exec ).and_return( result )

        expect( Beaker::Command ).to receive(:new).with("mkdir -p test/test/test")
        expect( host.mkdir_p('test/test/test') ).to be == true

      end

      it "does the right thing on a bash host, identified as is_cygwin=nil" do
        @options = {:is_cygwin => nil}
        @platform = 'windows'
        result = double
        allow( result ).to receive( :exit_code ).and_return( 0 )
        allow( host ).to receive( :exec ).and_return( result )

        expect( Beaker::Command ).to receive(:new).with("mkdir -p test/test/test")
        expect( host.mkdir_p('test/test/test') ).to be == true

      end

      it "does the right thing on a non-bash host, identified as is_cygwin=false (powershell)" do
        @options = {:is_cygwin => false}
        @platform = 'windows'
        result = double
        allow( result ).to receive( :exit_code ).and_return( 0 )
        allow( host ).to receive( :exec ).and_return( result )

        expect( Beaker::Command ).to receive(:new).with("if not exist test\\test\\test (md test\\test\\test)")
        expect( host.mkdir_p('test/test/test') ).to be == true

      end

    end

    describe "#touch" do

      it "generates the right absolute command for a windows host" do
        @platform = 'windows'
        expect( host.touch('touched_file') ).to be == "c:\\\\windows\\\\system32\\\\cmd.exe /c echo. 2> touched_file"
      end

      it "generates the right absolute command for a unix host" do
        @platform = 'centos'
        expect( host.touch('touched_file') ).to be == "/bin/touch touched_file"
      end

      it "generates the right absolute command for an osx host" do
        @platform = 'osx'
        expect( host.touch('touched_file') ).to be == "/usr/bin/touch touched_file"
      end

    end

    context 'do_scp_to' do
      # it takes a location and a destination
      # it basically proxies that to the connection object
      it 'do_scp_to logs info and proxies to the connection' do
        create_files(['source'])
        logger = host[:logger]
        conn = double(:connection)
        @options = { :logger => logger }
        host.instance_variable_set :@connection, conn
        args = [ '/source', 'target', {} ]
        conn_args = args + [ nil ]

        expect( logger ).to receive(:trace)
        expect( conn ).to receive(:scp_to).with( *conn_args ).and_return(Beaker::Result.new(host, 'output!'))
        allow( conn ).to receive(:ip).and_return(host['ip'])
        allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
        allow( conn ).to receive(:hostname).and_return(host.name)

        host.do_scp_to *args
      end

      it 'throws an IOError when the file given doesn\'t exist' do
        expect { host.do_scp_to "/does/not/exist", "does/not/exist/over/there", {} }.to raise_error(IOError)
      end

      context "using an ignore array with an absolute source path" do
        let( :source_path ) { '/repos/puppetlabs-inifile' }
        let( :target_path ) { '/etc/puppetlabs/modules/inifile' }

        before :each do
          test_dir = "#{source_path}/tests"
          other_test_dir = "#{source_path}/tests2"

          files = [
              '00_EnvSetup.rb', '035_StopFirewall.rb', '05_HieraSetup.rb',
              '01_TestSetup.rb', '03_PuppetMasterSanity.rb',
              '06_InstallModules.rb','02_PuppetUserAndGroup.rb',
              '04_ValidateSignCert.rb', '07_InstallCACerts.rb'              ]

          @fileset1 = files.shuffle.map {|file| test_dir + '/' + file }
          @fileset2 = files.shuffle.map {|file| other_test_dir + '/' + file }

          create_files( @fileset1 )
          create_files( @fileset2 )
        end
        it 'can take an ignore list that excludes all files and not call scp_to' do
          logger = host[:logger]
          conn = double(:connection)
          @options = { :logger => logger }
          host.instance_variable_set :@connection, conn
          args = [ source_path, target_path, {:ignore => ['tests', 'tests2']} ]

          expect( logger ).to receive(:trace)
          expect( host ).to receive( :mkdir_p ).exactly(0).times
          expect( conn ).to receive(:scp_to).exactly(0).times

          host.do_scp_to *args
        end
        it 'can take an ignore list that excludes a single file and scp the rest' do
          created_target_path = File.join(target_path, File.basename(source_path))
          exclude_file = '07_InstallCACerts.rb'
          logger = host[:logger]
          conn = double(:connection)
          @options = { :logger => logger }
          host.instance_variable_set :@connection, conn
          args = [ source_path, target_path, {:ignore => [exclude_file]} ]

          allow( Dir ).to receive( :glob ).and_return( @fileset1 + @fileset2 )

          expect( logger ).to receive(:trace)
          expect( host ).to receive( :mkdir_p ).with("#{created_target_path}/tests")
          expect( host ).to receive( :mkdir_p ).with("#{created_target_path}/tests2")

          (@fileset1 + @fileset2).each do |file|
            if file !~ /#{exclude_file}/
              file_args = [ file, File.join(created_target_path, File.dirname(file).gsub(source_path,'')), {:ignore => [exclude_file]} ]
              conn_args = file_args + [ nil ]
              expect( conn ).to receive(:scp_to).with( *conn_args ).and_return(Beaker::Result.new(host, 'output!'))
            else
              file_args = [ file, File.join(created_target_path, File.dirname(file).gsub(source_path,'')), {:ignore => [exclude_file]} ]
              conn_args = file_args + [ nil ]
              expect( conn ).to_not receive(:scp_to).with( *conn_args )
            end
          end
          allow( conn ).to receive(:ip).and_return(host['ip'])
          allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
          allow( conn ).to receive(:hostname).and_return(host.name)

          host.do_scp_to *args
        end
      end
      context "using an ignore array" do

        before :each do
          test_dir = 'tmp/tests'
          other_test_dir = 'tmp/tests2'

          files = [
            '00_EnvSetup.rb', '035_StopFirewall.rb', '05_HieraSetup.rb',
            '01_TestSetup.rb', '03_PuppetMasterSanity.rb',
            '06_InstallModules.rb','02_PuppetUserAndGroup.rb',
            '04_ValidateSignCert.rb', '07_InstallCACerts.rb'              ]

          @fileset1 = files.shuffle.map {|file| test_dir + '/' + file }
          @fileset2 = files.shuffle.map {|file| other_test_dir + '/' + file }

          create_files( @fileset1 )
          create_files( @fileset2 )
        end

        it 'can take an ignore list that excludes all files and not call scp_to' do
          logger = host[:logger]
          conn = double(:connection)
          @options = { :logger => logger }
          host.instance_variable_set :@connection, conn
          args = [ 'tmp', 'target', {:ignore => ['tests', 'tests2']} ]

          expect( logger ).to receive(:trace)
          expect( host ).to receive( :mkdir_p ).exactly(0).times
          expect( conn ).to receive(:scp_to).exactly(0).times

          host.do_scp_to *args
        end

        it 'can take an ignore list that excludes a single file and scp the rest' do
          exclude_file = '07_InstallCACerts.rb'
          logger = host[:logger]
          conn = double(:connection)
          @options = { :logger => logger }
          host.instance_variable_set :@connection, conn
          args = [ 'tmp', 'target', {:ignore => [exclude_file]} ]

          allow( Dir ).to receive( :glob ).and_return( @fileset1 + @fileset2 )

          expect( logger ).to receive(:trace)
          expect( host ).to receive( :mkdir_p ).with('target/tmp/tests')
          expect( host ).to receive( :mkdir_p ).with('target/tmp/tests2')
          (@fileset1 + @fileset2).each do |file|
            if file !~ /#{exclude_file}/
              file_args = [ file, File.join('target', File.dirname(file)), {:ignore => [exclude_file]} ]
              conn_args = file_args + [ nil ]
              expect( conn ).to receive(:scp_to).with( *conn_args ).and_return(Beaker::Result.new(host, 'output!'))
            else
              file_args = [ file, File.join('target', File.dirname(file)), {:ignore => [exclude_file]} ]
              conn_args = file_args + [ nil ]
              expect( conn ).to_not receive(:scp_to).with( *conn_args )
            end
          end
          allow( conn ).to receive(:ip).and_return(host['ip'])
          allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
          allow( conn ).to receive(:hostname).and_return(host.name)

          host.do_scp_to *args
        end

        it 'can take an ignore list that excludes a dir and scp the rest' do
          exclude_file = 'tests'
          logger = host[:logger]
          conn = double(:connection)
          @options = { :logger => logger }
          host.instance_variable_set :@connection, conn
          args = [ 'tmp', 'target', {:ignore => [exclude_file]} ]

          allow( Dir ).to receive( :glob ).and_return( @fileset1 + @fileset2 )

          expect( logger ).to receive(:trace)
          expect( host ).to_not receive( :mkdir_p ).with('target/tmp/tests')
          expect( host ).to receive( :mkdir_p ).with('target/tmp/tests2')
          (@fileset1).each do |file|
            file_args = [ file, File.join('target', File.dirname(file)), {:ignore => [exclude_file]} ]
            conn_args = file_args + [ nil ]
            expect( conn ).to_not receive(:scp_to).with( *conn_args )
          end
          (@fileset2).each do |file|
            file_args = [ file, File.join('target', File.dirname(file)), {:ignore => [exclude_file]} ]
            conn_args = file_args + [ nil ]
            expect( conn ).to receive(:scp_to).with( *conn_args ).and_return(Beaker::Result.new(host, 'output!'))
          end

          allow( conn ).to receive(:ip).and_return(host['ip'])
          allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
          allow( conn ).to receive(:hostname).and_return(host.name)
          host.do_scp_to *args
        end
      end
    end

    context 'do_scp_from' do
      it 'do_scp_from logs info and proxies to the connection' do
        logger = host[:logger]
        conn = double(:connection)
        @options = { :logger => logger }
        host.instance_variable_set :@connection, conn
        args = [ 'source', 'target', {} ]
        conn_args = args + [ nil ]

        expect( logger ).to receive(:debug)
        expect( conn ).to receive(:scp_from).with( *conn_args ).and_return(Beaker::Result.new(host, 'output!'))

        allow( conn ).to receive(:ip).and_return(host['ip'])
        allow( conn ).to receive(:vmhostname).and_return(host['vmhostname'])
        allow( conn ).to receive(:hostname).and_return(host.name)
        host.do_scp_from *args
      end
    end

    context 'do_rsync_to' do
      it 'do_rsync_to logs info and call Rsync class' do
        create_files(['source'])
        logger = host[:logger]
        @options = { :logger => logger }
        args = [ 'source', 'target', {:ignore => ['.bundle']} ]

        key = host['ssh']['keys']
        if key.is_a? Array
          key = key.first
        end

        rsync_args = [ 'source', 'target', ['-az', "-e \"ssh -i #{key} -p 22 -o 'StrictHostKeyChecking no'\"", "--exclude '.bundle'"] ]

        expect( host ).to receive(:reachable_name).and_return('default.ip.address')

        expect( Rsync ).to receive(:run).with( *rsync_args ).and_return(Beaker::Result.new(host, 'output!'))

        host.do_rsync_to *args

        expect(Rsync.host).to eq('root@default.ip.address')
      end

      it 'throws an IOError when the file given doesn\'t exist' do
        expect { host.do_rsync_to "/does/not/exist", "does/not/exist/over/there", {} }.to raise_error(IOError)
      end

      it 'uses the ssh config file' do
        @options = {'ssh' => {:config => '/var/folders/v0/centos-64-x6420150625-48025-lu3u86'}}
        create_files(['source'])
        args = [ 'source', 'target',
                 {:ignore => ['.bundle']} ]
        # since were using fakefs we need to create the file and directories
        FileUtils.mkdir_p('/var/folders/v0/')
        FileUtils.touch('/var/folders/v0/centos-64-x6420150625-48025-lu3u86')
        rsync_args = [ 'source', 'target', ['-az', "-e \"ssh -F /var/folders/v0/centos-64-x6420150625-48025-lu3u86 -o 'StrictHostKeyChecking no'\"", "--exclude '.bundle'"] ]
        expect(Rsync).to receive(:run).with(*rsync_args).and_return(Beaker::Result.new(host, 'output!'))
        expect(host.do_rsync_to(*args).cmd).to eq('output!')
      end

      it 'does not use the ssh config file when config does not exist' do
        @options = {'ssh' => {:config => '/var/folders/v0/centos-64-x6420150625-48025-lu3u86'}}
        create_files(['source'])
        args = [ 'source', 'target',
                 {:ignore => ['.bundle']} ]
        rsync_args = [ 'source', 'target', ['-az', "-e \"ssh -o 'StrictHostKeyChecking no'\"", "--exclude '.bundle'"] ]
        expect(Rsync).to receive(:run).with(*rsync_args).and_return(Beaker::Result.new(host, 'output!'))
        expect(host.do_rsync_to(*args).cmd).to eq('output!')
      end
    end

    it 'interpolates to its "name"' do
      expect( "#{host}" ).to be === 'name'
    end

    describe 'host close' do
      context 'with a nil connection object' do
        before do
          conn = nil
          host.instance_variable_set :@connection, conn
          allow(host).to receive(:close).and_call_original
        end
        it 'does not raise an error' do
          expect { host.close }.to_not raise_error
        end
      end
    end

  end
end