gistfile1.rb

require "dist/frozen-urchin.jar"
require 'external/jsfml.jar'

class StubDrawable
  include Java::org.jsfml.graphics.Drawable
  
  def draw(*args)
  end
end

describe Java::org.fu.Renderer do 
  before :each do
    @renderer = Java::org.fu.Renderer.new
    @drawer = mock("renderer-drawer")
    @drawer.extend(Java::org.fu.RendererDrawer)
    @drawer.stub(:name).and_return("org.fu.test.StubDrawer")
    @drawer.stub(:expected_input).and_return(StubDrawable)
  end
  
  it "should not call #run on drawer with empty scene" do
    @drawer.should_not_receive :run
      
    @renderer.add_module(@drawer)
    @renderer.generateFrame()
  end
  
  it "should call #run on drawer with non-empty scene" do
    @drawer.should_receive(:run).with(StubDrawable)
    
    @renderer.add_module(@drawer)
    
    3.times do
      expect { @renderer.add_drawable(StubDrawable.new, @drawer.name) }.to_not raise_error
    end
    
    @renderer.generateFrame()
  end
  
  it "should properly handle drawables depending on modules" do
    expect { @renderer.add_drawable(StubDrawable.new, @drawer.name) }.to raise_error(Java::org.fu.RendererDrawerNotFoundError)
    @renderer.add_module(@drawer)
    expect { @renderer.add_drawable(StubDrawable.new, @drawer.name) }.to_not raise_error
    @renderer.num_drawables(StubDrawable).should == 1
  end
end