From: Lyle Johnson <ljohnson@...>
Date: 2002-03-27T06:47:50+09:00
Subject: Re: Using FxRuby and Test::Unit.

> I've been trying to write some code Test First using Test::Unit and FxRuby
> and I'm having some problems.
>
<snip>
>
> Loaded suite FoxProblemDemo
> Started...
> ..FoxProblemDemo.rb:6: [BUG] Segmentation fault
>
> abnormal program termination
> ruby 1.6.6 (2001-12-26) [i586-mswin32]
> >Exit code: 3
>
> The problem doesn't show up until the second test method is added. I'm
> guessing that when set_up is called a second time a second application
> object is create and that this is not allowed in Fox. I tried to get round
> this by re-using the application object but this didn't help. I'm trying
to
> test a FXMainWindow sub-class and I get similar problems when I try to
> instantiate a second instance using the same FXApp object.
>
> Any have any pointers on how to use FXRuby and Test::Unit together would
be
> appreciated.

I'm just starting to look into this myself and so I don't have a "cookbook"
solution yet. But listed below is a test case I wrote for the FXButton class
that may give you some ideas. Note that it doesn't ever call create() to
actually create the server-side resources and display the GUI; it is
strictly testing the client-side data. I'm still not exactly sure how to
unit test GUI components like this, in an automated setting.

Anyways...

Hope this helps,

Lyle

require 'test/unit'

require 'fox'

include Fox

class TC_FXButton < Test::Unit::TestCase
  def set_up
    if FXApp.instance.nil?
      @app = FXApp.new('TC_FXButton', 'FXRuby')
      @app.init([])
      @mainwin = FXMainWindow.new(@app, 'TC_FXButton')
    else
      @app = FXApp.instance
      @mainwin = @app.mainWindow
    end
    @button = FXButton.new(@mainwin, "buttonText")
  end

  def testText
    assert_not_nil(@button.text)
    assert_instance_of(String, @button.text)
    assert_equal("buttonText", @button.text)
    assert_not_equal("googly-moogly", @button.text)
    @button.text = nil
    assert_not_nil(@button.text)
    assert_instance_of(String, @button.text)
  end

  def testStyle
    assert_not_nil(@button.buttonStyle)
    assert_instance_of(Fixnum, @button.buttonStyle)

    @button.buttonStyle |= BUTTON_AUTOGRAY
    assert((@button.buttonStyle & BUTTON_AUTOGRAY) != 0)
    @button.buttonStyle &= ~BUTTON_AUTOGRAY
    assert((@button.buttonStyle & BUTTON_AUTOGRAY) == 0)

    @button.buttonStyle |= BUTTON_AUTOHIDE
    assert((@button.buttonStyle & BUTTON_AUTOHIDE) != 0)
    @button.buttonStyle &= ~BUTTON_AUTOHIDE
    assert((@button.buttonStyle & BUTTON_AUTOHIDE) == 0)

    @button.buttonStyle |= BUTTON_TOOLBAR
    assert((@button.buttonStyle & BUTTON_TOOLBAR) != 0)
    @button.buttonStyle &= ~BUTTON_TOOLBAR
    assert((@button.buttonStyle & BUTTON_TOOLBAR) == 0)

    @button.buttonStyle |= BUTTON_DEFAULT
    assert((@button.buttonStyle & BUTTON_DEFAULT) != 0)
    @button.buttonStyle &= ~BUTTON_DEFAULT
    assert((@button.buttonStyle & BUTTON_DEFAULT) == 0)

    @button.buttonStyle |= BUTTON_INITIAL      # unlike others, this should
not work
    assert((@button.buttonStyle & BUTTON_INITIAL) == 0)
  end

  def testState
    assert_not_nil(@button.state)
    assert_kind_of(Fixnum, @button.state)

    @button.state = STATE_UP
    assert_equal(STATE_UP, @button.state)

    @button.state = STATE_DOWN
    assert_equal(STATE_DOWN, @button.state)

    @button.state = STATE_ENGAGED
    assert_equal(STATE_ENGAGED, @button.state)

    @button.state = STATE_CHECKED
    assert_equal(STATE_CHECKED, @button.state)

    @button.state = STATE_UNCHECKED
    assert_equal(STATE_UNCHECKED, @button.state)
  end
end