#
# Author:: Bryan McLellan (btm@loftninjas.org)
# Copyright:: Copyright (c) 2010 Bryan McLellan
# 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::Provider::Service::Upstart do
  before(:each) do
    @node =Chef::Node.new
    @node[:name] = 'upstarter'
    @node[:platform] = 'ubuntu'
    @node[:platform_version] = '9.10'

    @events = Chef::EventDispatch::Dispatcher.new
    @run_context = Chef::RunContext.new(@node, {}, @events)

    @new_resource = Chef::Resource::Service.new("rsyslog")
    @provider = Chef::Provider::Service::Upstart.new(@new_resource, @run_context)
  end

  describe "when first created" do
    before do
      @platform = nil
    end

    it "should return /etc/event.d as the upstart job directory when running on Ubuntu 9.04" do
      @node[:platform_version] = '9.04'
      #Chef::Platform.stub!(:find_platform_and_version).and_return([ "ubuntu", "9.04" ])
      @provider = Chef::Provider::Service::Upstart.new(@new_resource, @run_context)
      @provider.instance_variable_get(:@upstart_job_dir).should == "/etc/event.d"
      @provider.instance_variable_get(:@upstart_conf_suffix).should == ""
    end

    it "should return /etc/init as the upstart job directory when running on Ubuntu 9.10" do
      @node[:platform_version] = '9.10'
      @provider = Chef::Provider::Service::Upstart.new(@new_resource, @run_context)
      @provider.instance_variable_get(:@upstart_job_dir).should == "/etc/init"
      @provider.instance_variable_get(:@upstart_conf_suffix).should == ".conf"
    end

    it "should return /etc/init as the upstart job directory by default" do
      @node[:platform_version] = '9000'
      @provider = Chef::Provider::Service::Upstart.new(@new_resource, @run_context)
      @provider.instance_variable_get(:@upstart_job_dir).should == "/etc/init"
      @provider.instance_variable_get(:@upstart_conf_suffix).should == ".conf"
    end
  end

  describe "load_current_resource" do
    before(:each) do
      @node[:command] = {:ps => "ps -ax"}

      @current_resource = Chef::Resource::Service.new("rsyslog")
      Chef::Resource::Service.stub!(:new).and_return(@current_resource)

      @status = mock("Status", :exitstatus => 0)
      @provider.stub!(:popen4).and_return(@status)
      @stdin = StringIO.new
      @stdout = StringIO.new
      @stderr = StringIO.new
      @pid = mock("PID")
      
      ::File.stub!(:exists?).and_return(true)
      ::File.stub!(:open).and_return(true)
    end

    it "should create a current resource with the name of the new resource" do
      Chef::Resource::Service.should_receive(:new).and_return(@current_resource)
      @provider.load_current_resource
    end

    it "should set the current resources service name to the new resources service name" do
      @current_resource.should_receive(:service_name).with(@new_resource.service_name)
      @provider.load_current_resource
    end

    it "should run '/sbin/status rsyslog'" do
      @provider.should_receive(:popen4).with("/sbin/status rsyslog").and_return(@status)
      @provider.load_current_resource
    end

    describe "when the status command uses the new format" do
      before do
      end

      it "should set running to true if the status command returns 0" do
        @stdout = StringIO.new("rsyslog start/running")
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_return(@status)
        @provider.load_current_resource
        @current_resource.running.should be_true
      end

      it "should set running to false if the status command returns anything except 0" do
        @stdout = StringIO.new("rsyslog stop/waiting")
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_return(@status)
        @provider.load_current_resource
        @current_resource.running.should be_false
      end
    end

    describe "when the status command uses the old format" do
      it "should set running to true if the status command returns 0" do
        @stdout = StringIO.new("rsyslog (start) running, process 32225")
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_return(@status)
        @provider.load_current_resource
        @current_resource.running.should be_true
      end

      it "should set running to false if the status command returns anything except 0" do
        @stdout = StringIO.new("rsyslog (stop) waiting")
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_return(@status)
        @provider.load_current_resource
        @current_resource.running.should be_false
      end
    end

    it "should set running to false if it catches a Chef::Exceptions::Exec" do
      @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_raise(Chef::Exceptions::Exec)
      @current_resource.should_receive(:running).with(false)
      @provider.load_current_resource
    end

    it "should set enabled to true when it finds 'starts on'" do
      @lines = mock("start on filesystem", :gets => "start on filesystem")
      ::File.stub!(:open).and_yield(@lines)
      @current_resource.should_receive(:running).with(false)
      @provider.load_current_resource
    end

    it "should set enabled to false when it finds '#starts on'" do
      @lines = mock("start on filesystem", :gets => "#start on filesystem")
      ::File.stub!(:open).and_yield(@lines)
      @current_resource.should_receive(:running).with(false)
      @provider.load_current_resource
    end

    it "should assume disable when no job configuration file is found" do
      ::File.stub!(:exists?).and_return(false)
      @current_resource.should_receive(:running).with(false)
      @provider.load_current_resource
    end


    it "should track state when the upstart configuration file fails to load" do
      File.should_receive(:exists?).and_return false
      @provider.load_current_resource
      @provider.instance_variable_get("@config_file_found").should == false
    end

    describe "when a status command has been specified" do
      before do
        @new_resource.stub!(:status_command).and_return("/bin/chefhasmonkeypants status")
      end

      it "should run the services status command if one has been specified" do
        @provider.stub!(:run_command_with_systems_locale).with({:command => "/bin/chefhasmonkeypants status"}).and_return(0)
        @current_resource.should_receive(:running).with(true)
        @provider.load_current_resource
      end

      it "should track state when the user-provided status command fails" do 
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_raise(Chef::Exceptions::Exec)
        @provider.load_current_resource
        @provider.instance_variable_get("@command_success").should == false
      end

      it "should set running to false if it catches a Chef::Exceptions::Exec when using a status command" do
        @provider.stub!(:popen4).and_yield(@pid, @stdin, @stdout, @stderr).and_raise(Chef::Exceptions::Exec)
        @current_resource.should_receive(:running).with(false)
        @provider.load_current_resource
      end
    end

    it "should track state when we fail to obtain service status via upstart_state" do
      @provider.should_receive(:upstart_state).and_raise Chef::Exceptions::Exec
      @provider.load_current_resource
      @provider.instance_variable_get("@command_success").should == false
    end
    
    it "should return the current resource" do
      @provider.load_current_resource.should eql(@current_resource)
    end


  end

  describe "enable and disable service" do
    before(:each) do
      @current_resource = Chef::Resource::Service.new('rsyslog')
      Chef::Resource::Service.stub!(:new).and_return(@current_resource)
      @provider.current_resource = @current_resource
      Chef::Util::FileEdit.stub!(:new)
    end

    it "should enable the service if it is not enabled" do
      @file = Object.new
      Chef::Util::FileEdit.stub!(:new).and_return(@file)
      @current_resource.stub!(:enabled).and_return(false)
      @file.should_receive(:search_file_replace)
      @file.should_receive(:write_file)
      @provider.enable_service()
    end

    it "should disable the service if it is enabled" do
      @file = Object.new
      Chef::Util::FileEdit.stub!(:new).and_return(@file)
      @current_resource.stub!(:enabled).and_return(true)
      @file.should_receive(:search_file_replace)
      @file.should_receive(:write_file)
      @provider.disable_service()
    end

  end

  describe "start and stop service" do
    before(:each) do
      @current_resource = Chef::Resource::Service.new('rsyslog')

      Chef::Resource::Service.stub!(:new).and_return(@current_resource)
      @provider.current_resource = @current_resource
    end

    it "should call the start command if one is specified" do
      @new_resource.stub!(:start_command).and_return("/sbin/rsyslog startyousillysally")
      @provider.should_receive(:shell_out!).with("/sbin/rsyslog startyousillysally")
      @provider.start_service()
    end

    it "should call '/sbin/start service_name' if no start command is specified" do
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/start #{@new_resource.service_name}"}).and_return(0)
      @provider.start_service()
    end

    it "should not call '/sbin/start service_name' if it is already running" do
      @current_resource.stub!(:running).and_return(true)
      @provider.should_not_receive(:run_command_with_systems_locale).with({:command => "/sbin/start #{@new_resource.service_name}"}).and_return(0)
      @provider.start_service()
    end

    it "should pass parameters to the start command if they are provided" do
      @new_resource = Chef::Resource::Service.new("rsyslog")
      @new_resource.parameters({ "OSD_ID" => "2" })
      @provider = Chef::Provider::Service::Upstart.new(@new_resource, @run_context)
      @provider.current_resource = @current_resource
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/start rsyslog OSD_ID=2"}).and_return(0)
      @provider.start_service()
    end

    it "should call the restart command if one is specified" do
      @current_resource.stub!(:running).and_return(true)
      @new_resource.stub!(:restart_command).and_return("/sbin/rsyslog restartyousillysally")
      @provider.should_receive(:shell_out!).with("/sbin/rsyslog restartyousillysally")
      @provider.restart_service()
    end

    it "should call '/sbin/restart service_name' if no restart command is specified" do
      @current_resource.stub!(:running).and_return(true)
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/restart #{@new_resource.service_name}"}).and_return(0)
      @provider.restart_service()
    end

    it "should call '/sbin/start service_name' if restart_service is called for a stopped service" do
      @current_resource.stub!(:running).and_return(false)
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/start #{@new_resource.service_name}"}).and_return(0)
      @provider.restart_service()
    end

    it "should call the reload command if one is specified" do
      @current_resource.stub!(:running).and_return(true)
      @new_resource.stub!(:reload_command).and_return("/sbin/rsyslog reloadyousillysally")
      @provider.should_receive(:shell_out!).with("/sbin/rsyslog reloadyousillysally")
      @provider.reload_service()
    end

    it "should call '/sbin/reload service_name' if no reload command is specified" do
      @current_resource.stub!(:running).and_return(true)
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/reload #{@new_resource.service_name}"}).and_return(0)
      @provider.reload_service()
    end

    it "should call the stop command if one is specified" do
      @current_resource.stub!(:running).and_return(true)
      @new_resource.stub!(:stop_command).and_return("/sbin/rsyslog stopyousillysally")
      @provider.should_receive(:shell_out!).with("/sbin/rsyslog stopyousillysally")
      @provider.stop_service()
    end

    it "should call '/sbin/stop service_name' if no stop command is specified" do
      @current_resource.stub!(:running).and_return(true)
      @provider.should_receive(:run_command_with_systems_locale).with({:command => "/sbin/stop #{@new_resource.service_name}"}).and_return(0)
      @provider.stop_service()
    end

    it "should not call '/sbin/stop service_name' if it is already stopped" do
      @current_resource.stub!(:running).and_return(false)
      @provider.should_not_receive(:run_command_with_systems_locale).with({:command => "/sbin/stop #{@new_resource.service_name}"}).and_return(0)
      @provider.stop_service()
    end
  end
end