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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>C///</title>
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#
# Author:: Daniel DeLeo (<dan@chef.io>)
# Copyright:: Copyright 2012-2016, Chef Software, Inc.
# 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"
require "functional/resource/base"
require "chef/version"
require "chef/shell"
require "chef/mixin/command/unix"

describe Shell do

  # chef-shell's unit tests are by necessity very mock-heavy, and frequently do
  # not catch cases where chef-shell fails to boot because of changes in
  # chef/client.rb
  describe "smoke tests", :unix_only => true do
    include Chef::Mixin::Command::Unix

    TIMEOUT = 300

    def read_until(io, expected_value)
      start = Time.new
      buffer = ""
      until buffer.include?(expected_value)
        begin
          buffer << io.read_nonblock(1)
        rescue Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::EIO, EOFError
          sleep 0.01
        end
        if Time.new - start > TIMEOUT
          raise "did not read expected value `#{expected_value}' within #{TIMEOUT}s\n" +
            "Buffer so far: `#{buffer}'"
        end
      end
      buffer
    end

    def flush_output(io)
      start = Time.new
      loop do
        begin
          io.read_nonblock(1)
        rescue Errno::EWOULDBLOCK, Errno::EAGAIN
          sleep 0.01
        rescue EOFError, Errno::EIO
          break
        end
        if Time.new - start > TIMEOUT
          raise "timed out after #{TIMEOUT}s waiting for output to end"
        end
      end
    end

    def wait_or_die(pid)
      start = Time.new

      until exitstatus = Process.waitpid2(pid, Process::WNOHANG)
        if Time.new - start > 5
          STDERR.puts("chef-shell tty did not exit cleanly, killing it")
          Process.kill(:KILL, pid)
        end
        sleep 0.01
      end
      exitstatus[1]
    end

    def run_chef_shell_with(options)
      case ohai[:platform]
      when "aix"
        config = File.expand_path("shef-config.rb", CHEF_SPEC_DATA)
        path_to_chef_shell = File.expand_path("../../../bin/chef-shell", __FILE__)
        output = ""
        status = popen4("#{path_to_chef_shell} -c #{config} #{options}", :waitlast => true) do |pid, stdin, stdout, stderr|
          read_until(stdout, "chef (#{Chef::VERSION})>")
          yield stdout, stdin if block_given?
          stdin.write("'done'\n")
          output = read_until(stdout, '=> "done"')
          stdin.print("exit\n")
          flush_output(stdout)
        end

        [output, status.exitstatus]
      else
        # Windows ruby installs don't (always?) have PTY,
        # so h