#!/usr/bin/env ruby

BEGIN {
	require 'pathname'
	basedir = Pathname.new( __FILE__ ).dirname.parent
	libdir = basedir + "lib"

	$LOAD_PATH.unshift( libdir ) unless $LOAD_PATH.include?( libdir )
}

require 'chunker'
require 'rubygems'
require 'spec'

ENDSTUFF = <<ENDSTUFF
Stuff within the end block.

Content of the END block
Content of the END block
Content of the END block
Content of the END block
ENDSTUFF

HURGADURGA = <<HURGADURGA

Content of the HURGADURGA block
Content of the HURGADURGA block
Content of the HURGADURGA block
Content of the HURGADURGA block

HURGADURGA

HURRRRG = <<HURRRRG
	123123123 123123123 123123123
	123123123 123123123 123123123
	123123123 123123123 123123123
HURRRRG

POOP = <<POOP
Content of the POOP block
POOP

FILE_TEXT = <<EO_FILE_TEXT

This is stuff we shouldn't see or care about.
You know, stuff like code, presumably.

__END__
#{ENDSTUFF}
EO_FILE_TEXT

FILE_TEXT_MULTIPLE = <<EO_FILE_TEXT

This is stuff we shouldn't see or care about.
You know, stuff like code, presumably.

__END__
#{ENDSTUFF}
__POOP__
#{POOP}
__HURRRRG__
#{HURRRRG}
__HURGADURGA__
#{HURGADURGA}
EO_FILE_TEXT


describe Chunker::DataParser do

	it "doesn't include content above the __END__ marker" do
		klass = Class.new
		dp = Chunker::DataParser.new( klass, StringIO.new( FILE_TEXT_MULTIPLE ))
		dp.instance_variable_get( :@scanner ).string.
			should_not =~ /This is stuff we shouldn't see/
	end

	it "doesn't contain the __END__ marker itself" do
		klass = Class.new
		dp = Chunker::DataParser.new( klass, StringIO.new( FILE_TEXT ))
		dp.instance_variable_get( :@scanner ).string.should_not =~ /^__END__/
	end
end


describe 'A class that includes Chunker' do

	it "has all content in DATA_END if there are no sub blocks" do
		File.stub!( :open ).and_return( StringIO.new( FILE_TEXT ))
		klass = Class.new { include Chunker }

		klass.constants.should_not include( 'DATA_POOP' )
		klass.constants.should_not include( 'DATA_HURRRRG' )
		klass.constants.should_not include( 'DATA_HURGADURGA' )
		klass.constants.should include( 'DATA_END' )
	end

	it "separates data sub blocks into individual constants" do
		File.stub!( :open ).and_return( StringIO.new( FILE_TEXT_MULTIPLE ))
		klass = Class.new { include Chunker }

		klass.constants.should include( 'DATA_END' )
		klass.constants.should include( 'DATA_POOP' )
		klass.constants.should include( 'DATA_HURRRRG' )
		klass.constants.should include( 'DATA_HURGADURGA' )
	end

	it "has IO constants that contain the data block contents" do
		File.stub!( :open ).and_return( StringIO.new( FILE_TEXT_MULTIPLE ))
		klass = Class.new { include Chunker }

		klass.const_get( :DATA_END ).read.chomp.should        == ENDSTUFF
		klass.const_get( :DATA_POOP ).read.chomp.should       == POOP
		klass.const_get( :DATA_HURRRRG ).read.chomp.should    == HURRRRG
		klass.const_get( :DATA_HURGADURGA ).read.chomp.should == HURGADURGA
	end
end