From: Shashank Date <sdate@...>
Date: 2003-06-04T09:13:46+09:00
Subject: Test::Unit::MockObject not working

....so I downloaded the latest version of test-unit-mock from RAA:
[05-31 20:35    test-unit-mock    Mock objects for Test::Uni..
 Lib../Devel.. 0.02]  and started playing with it.

I created a simple class named LightBulb which has instance methods
"on" and "off" which change its status. When an object of this class
comes into existance, the status is off. I want the methods "on" and
"off"  to be in that order. Calling the method "on" on a lightbulb which
is already "on" does not bode well. Like wise for the method "off".

Everything went fine until I tried using  "strictCallOrder = true".
I thought I would be able to use it for calls in a loop. But that is not
how it works.

Can anybody shed some light ;-) on how to acheive this elegantly?
--------------------------------------------------------------------
class LightBulb

  attr :status

  def initialize
    @status = :off
  end

  def on
    if @status == :on
      raise 'boom!'
    else
      @status = :on
      puts 'ON'
    end
    1
  end

  def off
    if @status == :off
      raise 'baam!'
    else
      @status = :off
      puts 'OFF'
    end
    0
  end

end

tm = LightBulb.new

2.times {
    p tm.on
    p tm.off
 }

puts '------ Mock Test Begins -------'

require 'test/unit'
require 'test/unit/mock'

TmClass = Test::Unit::MockObject(LightBulb)

tmObj = TmClass.new
tmObj.setReturnValues(:on=>1,:off=>0,:status=>[true,false])
tmObj.setCallOrder(:on, :off)
tmObj.strictCallOrder = true
tmObj.activate

2.times {
    p tmObj.on
    p tmObj.off
}

tmObj.verify
#--------------------------------------------

Produces:

ON
1
OFF
0
ON
1
OFF
0
------ Mock Test Begins -------
1
0
1
0
Loaded suite C:/atest/tst_mock
Started

Finished in 0.0 seconds.

0 tests, 0 assertions, 0 failures, 0 errors
C:/ruby/lib/ruby/site_ruby/1.8/test/unit/assertions.rb:31:in `assert_block':
Call order assertion failed: Unexpected method :on called from
C:/atest/tst_mock.rb:57 at 0.00000 (Test::Unit::AssertionFailedError)
 from C:/ruby/lib/ruby/site_ruby/1.8/test/unit/assertions.rb:29:in
`_wrap_assertion'
 from C:/ruby/lib/ruby/site_ruby/1.8/test/unit/assertions.rb:33:in
`assert_block'
 from C:/ruby/lib/ruby/site_ruby/1.8/test/unit/mock.rb:285:in `verify'
 from C:/atest/tst_mock.rb:60