require 'test/unit'
require 'calcagent'
require 'fileutils'

require 'net/http'

BasicSocket.do_not_reverse_lookup = true

class TestMyAgent < Test::Unit::TestCase

  def setup
    if File.exist?('calcagent.rb')
      FileUtils.copy('calcagent.rb', 'calcagent.rb.save')
      begin 
        FileUtils.copy('calcagent-api.yaml', 'calcagent-api.yaml.save') 
      rescue; end
    end
    @agent = MyAgent.new
  end 

  def test_defining_hello
    actual, s = @agent.send("add pattern /^hello/, hello")
    
    actual, s = @agent.send("hello")

    actual, s = @agent.send(">  def hello(pattern=nil, input=nil)")
    actual, s = @agent.send(">    if @count == nil; @count = 1; return 'I am ready for my first lesson.'; end")
    actual, s = @agent.send(">    return 'Hello again.'")
    actual, s = @agent.send(">  end # method_def")

    actual, s = @agent.send("hello")
    assert_match(/lesson/, actual)

    actual, s = @agent.send("hi is a synonym for hello")
    assert_match(/Okay/, actual)

    actual, s = @agent.send("hi")
    assert_match(/again/, actual)
  end

  def test_show_api
    actual, s = @agent.send("show api")
    assert_match(/ is a synonym for /, actual)
  end

  def test_show_one_method_api
    actual, s = @agent.send("show show_api's api")
    assert_match(/show api/, actual)
  end

  def test_calc
    actual, s = @agent.send("how many ounces in a pound?")
    assert_match(/16/, actual)

    actual, s = @agent.send("what is 1 foot + 2 feet in meters?")
    assert_match(/meters/, actual)

    actual, s = @agent.send("convert -40F to Centigrade")
    assert_match(/-40/, actual)

    actual, s = @agent.send("how many meters in a mile?")
    assert_match(/1,609/, actual)
   
    actual, s = @agent.send("what is 3.5g in ounces?")
    assert_match(/0.123458867/, actual)
  end

  def test_operators
    actual, s = @agent.send("what is 0.5 + 0.5 - 1?")
    assert_match(/0/, actual)

    actual, s = @agent.send("1 + 1")
    assert_match(/2/, actual)

    actual, s = @agent.send("10 / 2")
    assert_match(/5/, actual)

    actual, s = @agent.send("5 * 2")
    assert_match(/10/, actual)

    actual, s = @agent.send("2 - 5")
    assert_match(/-3/, actual)
  end

  def test_how_many
    actual, s = @agent.send("how many days is 600,000 hours?")
    assert_match(/25,000/, actual)
  end

  def test_that
    actual, s = @agent.send("1 + PI")
    assert_match(/4\.1415/, actual)

    actual, s = @agent.send("that * e")
    if actual !~ /11.258/ then actual, s = @agent.send("that * E") end
    assert_match(/11.258/, actual) 

    actual, s = @agent.send("what is that?")
    assert_match(/11.258/, actual)
  end

  def teardown
    File.delete('calcagent.rb') unless !File.exist?('calcagent.rb.save')
    begin; File.delete('calcagent-api.yaml'); rescue; end
    if File.exist?('calcagent.rb.save')
      FileUtils.copy('calcagent.rb.save', 'calcagent.rb')
      begin; FileUtils.copy('calcagent-api.yaml.save', 'calcagent-api.yaml'); rescue; end
    end
    if File.exist?('calcagent.rb') then File.delete('calcagent.rb.save') end
    if File.exist?('calcagent-api.yaml.save') then File.delete('calcagent-api.yaml.save') end
  end

end