#
# Author:: Ho-Sheng Hsiao (hosh@chef.io)
# Code derived from spec/unit/mixin/command_spec.rb
#
# Original header:
# Author:: Hongli Lai (hongli@phusion.nl)
# Copyright:: Copyright 2009-2016, Phusion
# License:: Apache License, Version 2.0
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#

require "spec_helper"

describe Chef::Mixin::ShellOut do
  let(:shell_out_class) { Class.new { include Chef::Mixin::ShellOut } }
  subject(:shell_out_obj) { shell_out_class.new }
  describe '#run_command_compatible_options' do
    subject { shell_out_obj.run_command_compatible_options(command_args) }
    let(:command_args) { [ cmd, options ] }
    let(:cmd) { "echo '#{rand(1000)}'" }

    let(:output) { StringIO.new }
    let!(:capture_log_output) { Chef::Log.logger = Logger.new(output) }
    let(:assume_deprecation_log_level) { allow(Chef::Log).to receive(:level).and_return(:warn) }

    context "without options" do
      let(:command_args) { [ cmd ] }

      it "should not edit command args" do
        is_expected.to eql(command_args)
      end
    end

    context "without deprecated options" do
      let(:options) { { :environment => environment } }
      let(:environment) { { "LC_ALL" => "C", "LANG" => "C", "LANGUAGE" => "C" } }

      it "should not edit command args" do
        is_expected.to eql(command_args)
      end
    end

    def self.should_emit_deprecation_warning_about(old_option, new_option)
      it "should emit a deprecation warning" do
        assume_deprecation_log_level and capture_log_output
        subject
        expect(output.string).to match /DEPRECATION:/
        expect(output.string).to match Regexp.escape(old_option.to_s)
        expect(output.string).to match Regexp.escape(new_option.to_s)
      end
    end

    context "with :command_log_level option" do
      let(:options) { { :command_log_level => command_log_level } }
      let(:command_log_level) { :warn }

      it "should convert :command_log_level to :log_level" do
        is_expected.to eql [ cmd, { :log_level => command_log_level } ]
      end

      should_emit_deprecation_warning_about :command_log_level, :log_level
    end

    context "with :command_log_prepend option" do
      let(:options) { { :command_log_prepend => command_log_prepend } }
      let(:command_log_prepend) { "PROVIDER:" }

      it "should convert :command_log_prepend to :log_tag" do
        is_expected.to eql [ cmd, { :log_tag => command_log_prepend } ]
      end

      should_emit_deprecation_warning_about :command_log_prepend, :log_tag
    end

    context "with 'command_log_level' option" do
      let(:options) { { "command_log_level" => command_log_level } }
      let(:command_log_level) { :warn }

      it "should convert 'command_log_level' to :log_level" do
        is_expected.to eql [ cmd, { :log_level => command_log_level } ]
      end

      should_emit_deprecation_warning_about :command_log_level, :log_level
    end

    context "with 'command_log_prepend' option" do
      let(:options) { { "command_log_prepend" => command_log_prepend } }
      let(:command_log_prepend) { "PROVIDER:" }

      it "should convert 'command_log_prepend' to :log_tag" do
        is_expected.to eql [ cmd, { :log_tag => command_log_prepend } ]
      end

      should_emit_deprecation_warning_about :command_log_prepend, :log_tag
    end
  end

  context "when testing individual methods" do
    before(:each) do
      @original_env = ENV.to_hash
      ENV.clear
    end

    after(:each) do
      ENV.clear
      ENV.update(@original_env)
    end

    let(:cmd) { "echo '#{rand(1000)}'" }

    describe "#shell_out" do

      describe "when the last argument is a Hash" do
        describe "and environment is an option" do
          it "should not change environment language settings when they are set to nil" do
            options = { :environment => { "LC_ALL" => nil, "LANGUAGE" => nil, "LANG" => nil } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should not change environment language settings when they are set to non-nil" do
            options = { :environment => { "LC_ALL" => "en_US.UTF-8", "LANGUAGE" => "en_US.UTF-8", "LANG" => "en_US.UTF-8" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should set environment language settings to the configured internal locale when they are not present" do
            options = { :environment => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
              :environment => {
                "HOME"     => "/Users/morty",
                "LC_ALL"   => Chef::Config[:internal_locale],
                "LANG"     => Chef::Config[:internal_locale],
                "LANGUAGE" => Chef::Config[:internal_locale],
              },
            }).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should not mutate the options hash when it adds language settings" do
            options = { :environment => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
              :environment => {
                "HOME"     => "/Users/morty",
                "LC_ALL"   => Chef::Config[:internal_locale],
                "LANG"     => Chef::Config[:internal_locale],
                "LANGUAGE" => Chef::Config[:internal_locale],
              },
            }).and_return(true)
            shell_out_obj.shell_out(cmd, options)
            expect(options[:environment].has_key?("LC_ALL")).to be false
          end
        end

        describe "and env is an option" do
          it "should not change env when langauge options are set to nil" do
            options = { :env => { "LC_ALL" => nil, "LANG" => nil, "LANGUAGE" => nil } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should not change env when language options are set to non-nil" do
            options = { :env => { "LC_ALL" => "de_DE.UTF-8", "LANG" => "de_DE.UTF-8", "LANGUAGE" => "de_DE.UTF-8" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should set environment language settings to the configured internal locale when they are not present" do
            options = { :env => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
              :env => {
                "HOME"     => "/Users/morty",
                "LC_ALL"   => Chef::Config[:internal_locale],
                "LANG"     => Chef::Config[:internal_locale],
                "LANGUAGE" => Chef::Config[:internal_locale],
              },
            }).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end

          it "should not mutate the options hash when it adds language settings" do
            options = { :env => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
              :env => {
                "HOME"     => "/Users/morty",
                "LC_ALL"   => Chef::Config[:internal_locale],
                "LANG"     => Chef::Config[:internal_locale],
                "LANGUAGE" => Chef::Config[:internal_locale],
              },
            }).and_return(true)
            shell_out_obj.shell_out(cmd, options)
            expect(options[:env].has_key?("LC_ALL")).to be false
          end
        end

        describe "and no env/environment option is present" do
          it "should set environment language settings to the configured internal locale" do
            options = { :user => "morty" }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
              :user => "morty",
              :environment => {
                "LC_ALL"   => Chef::Config[:internal_locale],
                "LANG"     => Chef::Config[:internal_locale],
                "LANGUAGE" => Chef::Config[:internal_locale],
              },
            }).and_return(true)
            shell_out_obj.shell_out(cmd, options)
          end
        end
      end

      describe "when the last argument is not a Hash" do
        it "should set environment language settings to the configured internal locale" do
          expect(shell_out_obj).to receive(:shell_out_command).with(cmd, {
            :environment => {
              "LC_ALL"   => Chef::Config[:internal_locale],
              "LANG"     => Chef::Config[:internal_locale],
              "LANGUAGE" => Chef::Config[:internal_locale],
            },
          }).and_return(true)
          shell_out_obj.shell_out(cmd)
        end
      end

    end

    describe "#shell_out_with_systems_locale" do

      describe "when the last argument is a Hash" do
        describe "and environment is an option" do
          it "should not change environment['LC_ALL'] when set to nil" do
            options = { :environment => { "LC_ALL" => nil } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end

          it "should not change environment['LC_ALL'] when set to non-nil" do
            options = { :environment => { "LC_ALL" => "en_US.UTF-8" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end

          it "should no longer set environment['LC_ALL'] to nil when 'LC_ALL' not present" do
            options = { :environment => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end
        end

        describe "and env is an option" do
          it "should not change env when set to nil" do
            options = { :env => { "LC_ALL" => nil } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end

          it "should not change env when set to non-nil" do
            options = { :env => { "LC_ALL" => "en_US.UTF-8" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end

          it "should no longer set env['LC_ALL'] to nil when 'LC_ALL' not present" do
            options = { :env => { "HOME" => "/Users/morty" } }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end
        end

        describe "and no env/environment option is present" do
          it "should no longer add environment option and set environment['LC_ALL'] to nil" do
            options = { :user => "morty" }
            expect(shell_out_obj).to receive(:shell_out_command).with(cmd, options).and_return(true)
            shell_out_obj.shell_out_with_systems_locale(cmd, options)
          end
        end
      end

      describe "when the last argument is not a Hash" do
        it "should no longer add environment options and set environment['LC_ALL'] to nil" do
          expect(shell_out_obj).to receive(:shell_out_command).with(cmd).and_return(true)
          shell_out_obj.shell_out_with_systems_locale(cmd)
        end
      end
    end

  end
end
